diff --git a/test/functional/feature_backwards_compatibility.py b/test/functional/feature_backwards_compatibility.py
index daefb161a..21776d85c 100755
--- a/test/functional/feature_backwards_compatibility.py
+++ b/test/functional/feature_backwards_compatibility.py
@@ -36,13 +36,14 @@ class BackwardsCompatibilityTest(BitcoinTestFramework):
         self.num_nodes = 6
         # Add new version after each release:
         self.extra_args = [
-            ["-addresstype=bech32", "-wallet="], # Pre-release: use to mine blocks
+            ["-addresstype=bech32"], # Pre-release: use to mine blocks
             ["-nowallet", "-walletrbf=1", "-addresstype=bech32"], # Pre-release: use to receive coins, swap wallets, etc
             ["-nowallet", "-walletrbf=1", "-addresstype=bech32"], # v0.19.1
             ["-nowallet", "-walletrbf=1", "-addresstype=bech32"], # v0.18.1
             ["-nowallet", "-walletrbf=1", "-addresstype=bech32"], # v0.17.2
             ["-nowallet", "-walletrbf=1", "-addresstype=bech32", "-wallet=wallet.dat"], # v0.16.3
         ]
+        self.wallet_names = [self.default_wallet_name]
 
     def skip_test_if_missing_module(self):
         self.skip_if_no_wallet()
@@ -59,6 +60,7 @@ class BackwardsCompatibilityTest(BitcoinTestFramework):
         ])
 
         self.start_nodes()
+        self.import_deterministic_coinbase_privkeys()
 
     def run_test(self):
         self.nodes[0].generatetoaddress(101, self.nodes[0].getnewaddress())
diff --git a/test/functional/feature_config_args.py b/test/functional/feature_config_args.py
index b4355a658..60533e196 100755
--- a/test/functional/feature_config_args.py
+++ b/test/functional/feature_config_args.py
@@ -14,6 +14,7 @@ class ConfArgsTest(BitcoinTestFramework):
         self.setup_clean_chain = True
         self.num_nodes = 1
         self.supports_cli = False
+        self.wallet_names = []
 
     def test_config_file_parser(self):
         # Assume node is stopped
diff --git a/test/functional/feature_dbcrash.py b/test/functional/feature_dbcrash.py
index 4bc47141a..7a2e35c09 100755
--- a/test/functional/feature_dbcrash.py
+++ b/test/functional/feature_dbcrash.py
@@ -56,7 +56,7 @@ class ChainstateWriteCrashTest(BitcoinTestFramework):
         # Set -maxmempool=0 to turn off mempool memory sharing with dbcache
         # Set -rpcservertimeout=900 to reduce socket disconnects in this
         # long-running test
-        self.base_args = ["-limitdescendantsize=0", "-maxmempool=0", "-rpcservertimeout=900", "-dbbatchsize=200000", "-wallet="]
+        self.base_args = ["-limitdescendantsize=0", "-maxmempool=0", "-rpcservertimeout=900", "-dbbatchsize=200000"]
 
         # Set different crash ratios and cache sizes.  Note that not all of
         # -dbcache goes to the in-memory coins cache.
@@ -66,7 +66,7 @@ class ChainstateWriteCrashTest(BitcoinTestFramework):
 
         # Node3 is a normal node with default args, except will mine full blocks
         # and non-standard txs (e.g. txs with "dust" outputs)
-        self.node3_args = ["-blockmaxweight=4000000", "-acceptnonstdtxn", "-wallet="]
+        self.node3_args = ["-blockmaxweight=4000000", "-acceptnonstdtxn"]
         self.extra_args = [self.node0_args, self.node1_args, self.node2_args, self.node3_args]
 
     def skip_test_if_missing_module(self):
diff --git a/test/functional/feature_fee_estimation.py b/test/functional/feature_fee_estimation.py
index d89eeec40..702a1d999 100755
--- a/test/functional/feature_fee_estimation.py
+++ b/test/functional/feature_fee_estimation.py
@@ -145,9 +145,9 @@ class EstimateFeeTest(BitcoinTestFramework):
         # mine non-standard txs (e.g. txs with "dust" outputs)
         # Force fSendTrickle to true (via whitelist.noban)
         self.extra_args = [
-            ["-acceptnonstdtxn", "-whitelist=noban@127.0.0.1", "-wallet="],
-            ["-acceptnonstdtxn", "-whitelist=noban@127.0.0.1", "-blockmaxweight=68000", "-wallet="],
-            ["-acceptnonstdtxn", "-whitelist=noban@127.0.0.1", "-blockmaxweight=32000", "-wallet="],
+            ["-acceptnonstdtxn", "-whitelist=noban@127.0.0.1"],
+            ["-acceptnonstdtxn", "-whitelist=noban@127.0.0.1", "-blockmaxweight=68000"],
+            ["-acceptnonstdtxn", "-whitelist=noban@127.0.0.1", "-blockmaxweight=32000"],
         ]
 
     def skip_test_if_missing_module(self):
diff --git a/test/functional/feature_filelock.py b/test/functional/feature_filelock.py
index e4ceb62c9..7de9a589b 100755
--- a/test/functional/feature_filelock.py
+++ b/test/functional/feature_filelock.py
@@ -15,7 +15,7 @@ class FilelockTest(BitcoinTestFramework):
 
     def setup_network(self):
         self.add_nodes(self.num_nodes, extra_args=None)
-        self.nodes[0].start(['-wallet='])
+        self.nodes[0].start()
         self.nodes[0].wait_for_rpc_connection()
 
     def run_test(self):
@@ -27,10 +27,11 @@ class FilelockTest(BitcoinTestFramework):
         self.nodes[1].assert_start_raises_init_error(extra_args=['-datadir={}'.format(self.nodes[0].datadir), '-noserver'], expected_msg=expected_msg)
 
         if self.is_wallet_compiled():
+            self.nodes[0].createwallet(self.default_wallet_name)
             wallet_dir = os.path.join(datadir, 'wallets')
             self.log.info("Check that we can't start a second bitcoind instance using the same wallet")
             expected_msg = "Error: Error initializing wallet database environment"
-            self.nodes[1].assert_start_raises_init_error(extra_args=['-walletdir={}'.format(wallet_dir), '-wallet=', '-noserver'], expected_msg=expected_msg, match=ErrorMatch.PARTIAL_REGEX)
+            self.nodes[1].assert_start_raises_init_error(extra_args=['-walletdir={}'.format(wallet_dir), '-wallet=' + self.default_wallet_name, '-noserver'], expected_msg=expected_msg, match=ErrorMatch.PARTIAL_REGEX)
 
 if __name__ == '__main__':
     FilelockTest().main()
diff --git a/test/functional/feature_notifications.py b/test/functional/feature_notifications.py
index 20020c323..5522f2b7c 100755
--- a/test/functional/feature_notifications.py
+++ b/test/functional/feature_notifications.py
@@ -45,8 +45,8 @@ class NotificationsTest(BitcoinTestFramework):
                             "-blocknotify=echo > {}".format(os.path.join(self.blocknotify_dir, '%s'))],
                            ["-blockversion=211",
                             "-rescan",
-                            "-wallet={}".format(self.wallet),
                             "-walletnotify=echo > {}".format(os.path.join(self.walletnotify_dir, notify_outputname('%w', '%s')))]]
+        self.wallet_names = [self.default_wallet_name, self.wallet]
         super().setup_network()
 
     def run_test(self):
diff --git a/test/functional/feature_pruning.py b/test/functional/feature_pruning.py
index df54ae777..e370e11a3 100755
--- a/test/functional/feature_pruning.py
+++ b/test/functional/feature_pruning.py
@@ -81,16 +81,16 @@ class PruneTest(BitcoinTestFramework):
 
         # Create nodes 0 and 1 to mine.
         # Create node 2 to test pruning.
-        self.full_node_default_args = ["-maxreceivebuffer=20000", "-checkblocks=5", "-wallet="]
+        self.full_node_default_args = ["-maxreceivebuffer=20000", "-checkblocks=5"]
         # Create nodes 3 and 4 to test manual pruning (they will be re-started with manual pruning later)
         # Create nodes 5 to test wallet in prune mode, but do not connect
         self.extra_args = [
             self.full_node_default_args,
             self.full_node_default_args,
-            ["-wallet=", "-maxreceivebuffer=20000", "-prune=550"],
-            ["-wallet=", "-maxreceivebuffer=20000"],
-            ["-wallet=", "-maxreceivebuffer=20000"],
-            ["-wallet=", "-prune=550"],
+            ["-maxreceivebuffer=20000", "-prune=550"],
+            ["-maxreceivebuffer=20000"],
+            ["-maxreceivebuffer=20000"],
+            ["-prune=550"],
         ]
         self.rpc_timeout = 120
 
@@ -112,8 +112,7 @@ class PruneTest(BitcoinTestFramework):
     def setup_nodes(self):
         self.add_nodes(self.num_nodes, self.extra_args)
         self.start_nodes()
-        for n in self.nodes:
-            n.importprivkey(privkey=n.get_deterministic_priv_key().key, label='coinbase', rescan=False)
+        self.import_deterministic_coinbase_privkeys()
 
     def create_big_chain(self):
         # Start by creating some coinbases we can spend later
diff --git a/test/functional/feature_settings.py b/test/functional/feature_settings.py
index c565854bb..3705caf4f 100755
--- a/test/functional/feature_settings.py
+++ b/test/functional/feature_settings.py
@@ -17,6 +17,7 @@ class SettingsTest(BitcoinTestFramework):
     def set_test_params(self):
         self.setup_clean_chain = True
         self.num_nodes = 1
+        self.wallet_names = []
 
     def run_test(self):
         node, = self.nodes
diff --git a/test/functional/interface_bitcoin_cli.py b/test/functional/interface_bitcoin_cli.py
index 81c007c27..1257dff1a 100755
--- a/test/functional/interface_bitcoin_cli.py
+++ b/test/functional/interface_bitcoin_cli.py
@@ -95,7 +95,7 @@ class TestBitcoinCli(BitcoinTestFramework):
             assert_equal(self.nodes[0].cli.getwalletinfo(), wallet_info)
 
             # Setup to test -getinfo, -generate, and -rpcwallet= with multiple wallets.
-            wallets = ['', 'Encrypted', 'secret']
+            wallets = [self.default_wallet_name, 'Encrypted', 'secret']
             amounts = [BALANCE + Decimal('9.999928'), Decimal(9), Decimal(31)]
             self.nodes[0].createwallet(wallet_name=wallets[1])
             self.nodes[0].createwallet(wallet_name=wallets[2])
diff --git a/test/functional/mempool_compatibility.py b/test/functional/mempool_compatibility.py
index fd3dd47e2..7168cb4ab 100755
--- a/test/functional/mempool_compatibility.py
+++ b/test/functional/mempool_compatibility.py
@@ -21,6 +21,7 @@ from test_framework.test_framework import BitcoinTestFramework
 class MempoolCompatibilityTest(BitcoinTestFramework):
     def set_test_params(self):
         self.num_nodes = 2
+        self.wallet_names = [None, self.default_wallet_name]
 
     def skip_test_if_missing_module(self):
         self.skip_if_no_wallet()
@@ -31,7 +32,7 @@ class MempoolCompatibilityTest(BitcoinTestFramework):
             150200, # oldest version supported by the test framework
             None,
         ])
-        self.start_nodes([[], ["-wallet="]])
+        self.start_nodes()
         self.import_deterministic_coinbase_privkeys()
 
     def run_test(self):
diff --git a/test/functional/rpc_deprecated.py b/test/functional/rpc_deprecated.py
index b71854d23..adcd8a7d4 100755
--- a/test/functional/rpc_deprecated.py
+++ b/test/functional/rpc_deprecated.py
@@ -29,7 +29,7 @@ class DeprecatedRpcTest(BitcoinTestFramework):
             self.nodes[0].generate(101)
             self.nodes[0].createwallet(wallet_name='nopriv', disable_private_keys=True)
             noprivs0 = self.nodes[0].get_wallet_rpc('nopriv')
-            w0 = self.nodes[0].get_wallet_rpc('')
+            w0 = self.nodes[0].get_wallet_rpc(self.default_wallet_name)
             self.nodes[1].createwallet(wallet_name='nopriv', disable_private_keys=True)
             noprivs1 = self.nodes[1].get_wallet_rpc('nopriv')
 
diff --git a/test/functional/rpc_getdescriptorinfo.py b/test/functional/rpc_getdescriptorinfo.py
index 977dc805e..ea064f976 100755
--- a/test/functional/rpc_getdescriptorinfo.py
+++ b/test/functional/rpc_getdescriptorinfo.py
@@ -17,6 +17,7 @@ class DescriptorTest(BitcoinTestFramework):
     def set_test_params(self):
         self.num_nodes = 1
         self.extra_args = [["-disablewallet"]]
+        self.wallet_names = []
 
     def test_desc(self, desc, isrange, issolvable, hasprivatekeys):
         info = self.nodes[0].getdescriptorinfo(desc)
diff --git a/test/functional/test_framework/test_framework.py b/test/functional/test_framework/test_framework.py
index f41f5129b..2824d8043 100755
--- a/test/functional/test_framework/test_framework.py
+++ b/test/functional/test_framework/test_framework.py
@@ -102,8 +102,16 @@ class BitcoinTestFramework(metaclass=BitcoinTestMetaClass):
         self.rpc_timeout = 60  # Wait for up to 60 seconds for the RPC server to respond
         self.supports_cli = True
         self.bind_to_localhost_only = True
-        self.set_test_params()
         self.parse_args()
+        self.default_wallet_name = ""
+        self.wallet_data_filename = "wallet.dat"
+        # Optional list of wallet names that can be set in set_test_params to
+        # create and import keys to. If unset, default is len(nodes) *
+        # [default_wallet_name]. If wallet names are None, wallet creation is
+        # skipped. If list is truncated, wallet creation is skipped and keys
+        # are not imported.
+        self.wallet_names = None
+        self.set_test_params()
         if self.options.timeout_factor == 0 :
             self.options.timeout_factor = 99999
         self.rpc_timeout = int(self.rpc_timeout * self.options.timeout_factor) # optionally, increase timeout by a factor
@@ -362,23 +370,12 @@ class BitcoinTestFramework(metaclass=BitcoinTestMetaClass):
     def setup_nodes(self):
         """Override this method to customize test node setup"""
         extra_args = [[]] * self.num_nodes
-        wallets = [[]] * self.num_nodes
         if hasattr(self, "extra_args"):
             extra_args = self.extra_args
-            wallets = [[x for x in eargs if x.startswith('-wallet=')] for eargs in extra_args]
-        extra_args = [x + ['-nowallet'] for x in extra_args]
         self.add_nodes(self.num_nodes, extra_args)
         self.start_nodes()
-        for i, n in enumerate(self.nodes):
-            n.extra_args.pop()
-            if '-wallet=0' in n.extra_args or '-nowallet' in n.extra_args or '-disablewallet' in n.extra_args or not self.is_wallet_compiled():
-                continue
-            if '-wallet=' not in wallets[i] and not any([x.startswith('-wallet=') for x in wallets[i]]):
-                wallets[i].append('-wallet=')
-            for w in wallets[i]:
-                wallet_name = w.split('=', 1)[1]
-                n.createwallet(wallet_name=wallet_name, descriptors=self.options.descriptors)
-        self.import_deterministic_coinbase_privkeys()
+        if self.is_wallet_compiled():
+            self.import_deterministic_coinbase_privkeys()
         if not self.setup_clean_chain:
             for n in self.nodes:
                 assert_equal(n.getblockchaininfo()["blocks"], 199)
@@ -394,13 +391,11 @@ class BitcoinTestFramework(metaclass=BitcoinTestMetaClass):
                 assert_equal(chain_info["initialblockdownload"], False)
 
     def import_deterministic_coinbase_privkeys(self):
-        for n in self.nodes:
-            try:
-                n.getwalletinfo()
-            except JSONRPCException as e:
-                assert str(e).startswith('Method not found')
-                continue
-
+        wallet_names = [self.default_wallet_name] * len(self.nodes) if self.wallet_names is None else self.wallet_names
+        assert len(wallet_names) <= len(self.nodes)
+        for wallet_name, n in zip(wallet_names, self.nodes):
+            if wallet_name is not None:
+                n.createwallet(wallet_name=wallet_name, descriptors=self.options.descriptors, load_on_startup=True)
             n.importprivkey(privkey=n.get_deterministic_priv_key().key, label='coinbase')
 
     def run_test(self):
diff --git a/test/functional/tool_wallet.py b/test/functional/tool_wallet.py
index fa5b5c10f..3f25c5885 100755
--- a/test/functional/tool_wallet.py
+++ b/test/functional/tool_wallet.py
@@ -73,7 +73,7 @@ class ToolWalletTest(BitcoinTestFramework):
         locked_dir = os.path.join(self.options.tmpdir, "node0", "regtest", "wallets")
         self.assert_raises_tool_error(
             'Error initializing wallet database environment "{}"!'.format(locked_dir),
-            '-wallet=wallet.dat',
+            '-wallet=' + self.default_wallet_name,
             'info',
         )
         path = os.path.join(self.options.tmpdir, "node0", "regtest", "wallets", "nonexistent.dat")
@@ -104,7 +104,7 @@ class ToolWalletTest(BitcoinTestFramework):
             Transactions: 0
             Address Book: 3
         ''')
-        self.assert_tool_output(out, '-wallet=wallet.dat', 'info')
+        self.assert_tool_output(out, '-wallet=' + self.default_wallet_name, 'info')
         timestamp_after = self.wallet_timestamp()
         self.log.debug('Wallet file timestamp after calling info: {}'.format(timestamp_after))
         self.log_wallet_timestamp_comparison(timestamp_before, timestamp_after)
@@ -143,7 +143,7 @@ class ToolWalletTest(BitcoinTestFramework):
             Transactions: 1
             Address Book: 3
         ''')
-        self.assert_tool_output(out, '-wallet=wallet.dat', 'info')
+        self.assert_tool_output(out, '-wallet=' + self.default_wallet_name, 'info')
         shasum_after = self.wallet_shasum()
         timestamp_after = self.wallet_timestamp()
         self.log.debug('Wallet file timestamp after calling info: {}'.format(timestamp_after))
@@ -181,7 +181,7 @@ class ToolWalletTest(BitcoinTestFramework):
 
     def test_getwalletinfo_on_different_wallet(self):
         self.log.info('Starting node with arg -wallet=foo')
-        self.start_node(0, ['-wallet=foo'])
+        self.start_node(0, ['-nowallet', '-wallet=foo'])
 
         self.log.info('Calling getwalletinfo on a different wallet ("foo"), testing output')
         shasum_before = self.wallet_shasum()
@@ -213,7 +213,7 @@ class ToolWalletTest(BitcoinTestFramework):
         self.assert_tool_output('', '-wallet=salvage', 'salvage')
 
     def run_test(self):
-        self.wallet_path = os.path.join(self.nodes[0].datadir, self.chain, 'wallets', 'wallet.dat')
+        self.wallet_path = os.path.join(self.nodes[0].datadir, self.chain, 'wallets', self.default_wallet_name, self.wallet_data_filename)
         self.test_invalid_tool_commands_and_args()
         # Warning: The following tests are order-dependent.
         self.test_tool_wallet_info()
diff --git a/test/functional/wallet_backup.py b/test/functional/wallet_backup.py
index bcbac18d5..36049dcb4 100755
--- a/test/functional/wallet_backup.py
+++ b/test/functional/wallet_backup.py
@@ -50,10 +50,10 @@ class WalletBackupTest(BitcoinTestFramework):
         # nodes 1, 2,3 are spenders, let's give them a keypool=100
         # whitelist all peers to speed up tx relay / mempool sync
         self.extra_args = [
-            ["-whitelist=noban@127.0.0.1", "-keypool=100", "-wallet="],
-            ["-whitelist=noban@127.0.0.1", "-keypool=100", "-wallet="],
-            ["-whitelist=noban@127.0.0.1", "-keypool=100", "-wallet="],
-            ["-whitelist=noban@127.0.0.1", "-wallet="],
+            ["-whitelist=noban@127.0.0.1", "-keypool=100"],
+            ["-whitelist=noban@127.0.0.1", "-keypool=100"],
+            ["-whitelist=noban@127.0.0.1", "-keypool=100"],
+            ["-whitelist=noban@127.0.0.1"],
         ]
         self.rpc_timeout = 120
 
@@ -107,9 +107,9 @@ class WalletBackupTest(BitcoinTestFramework):
         self.stop_node(2)
 
     def erase_three(self):
-        os.remove(os.path.join(self.nodes[0].datadir, self.chain, 'wallets', 'wallet.dat'))
-        os.remove(os.path.join(self.nodes[1].datadir, self.chain, 'wallets', 'wallet.dat'))
-        os.remove(os.path.join(self.nodes[2].datadir, self.chain, 'wallets', 'wallet.dat'))
+        os.remove(os.path.join(self.nodes[0].datadir, self.chain, 'wallets', self.default_wallet_name, self.wallet_data_filename))
+        os.remove(os.path.join(self.nodes[1].datadir, self.chain, 'wallets', self.default_wallet_name, self.wallet_data_filename))
+        os.remove(os.path.join(self.nodes[2].datadir, self.chain, 'wallets', self.default_wallet_name, self.wallet_data_filename))
 
     def run_test(self):
         self.log.info("Generating initial blockchain")
@@ -171,9 +171,9 @@ class WalletBackupTest(BitcoinTestFramework):
         shutil.rmtree(os.path.join(self.nodes[2].datadir, self.chain, 'chainstate'))
 
         # Restore wallets from backup
-        shutil.copyfile(os.path.join(self.nodes[0].datadir, 'wallet.bak'), os.path.join(self.nodes[0].datadir, self.chain, 'wallets', 'wallet.dat'))
-        shutil.copyfile(os.path.join(self.nodes[1].datadir, 'wallet.bak'), os.path.join(self.nodes[1].datadir, self.chain, 'wallets', 'wallet.dat'))
-        shutil.copyfile(os.path.join(self.nodes[2].datadir, 'wallet.bak'), os.path.join(self.nodes[2].datadir, self.chain, 'wallets', 'wallet.dat'))
+        shutil.copyfile(os.path.join(self.nodes[0].datadir, 'wallet.bak'), os.path.join(self.nodes[0].datadir, self.chain, 'wallets', self.default_wallet_name, self.wallet_data_filename))
+        shutil.copyfile(os.path.join(self.nodes[1].datadir, 'wallet.bak'), os.path.join(self.nodes[1].datadir, self.chain, 'wallets', self.default_wallet_name, self.wallet_data_filename))
+        shutil.copyfile(os.path.join(self.nodes[2].datadir, 'wallet.bak'), os.path.join(self.nodes[2].datadir, self.chain, 'wallets', self.default_wallet_name, self.wallet_data_filename))
 
         self.log.info("Re-starting nodes")
         self.start_three()
@@ -209,9 +209,9 @@ class WalletBackupTest(BitcoinTestFramework):
 
         # Backup to source wallet file must fail
         sourcePaths = [
-            os.path.join(self.nodes[0].datadir, self.chain, 'wallets', 'wallet.dat'),
-            os.path.join(self.nodes[0].datadir, self.chain, '.', 'wallets', 'wallet.dat'),
-            os.path.join(self.nodes[0].datadir, self.chain, 'wallets', ''),
+            os.path.join(self.nodes[0].datadir, self.chain, 'wallets', self.default_wallet_name, self.wallet_data_filename),
+            os.path.join(self.nodes[0].datadir, self.chain, '.', 'wallets', self.default_wallet_name, self.wallet_data_filename),
+            os.path.join(self.nodes[0].datadir, self.chain, 'wallets', self.default_wallet_name),
             os.path.join(self.nodes[0].datadir, self.chain, 'wallets')]
 
         for sourcePath in sourcePaths:
diff --git a/test/functional/wallet_balance.py b/test/functional/wallet_balance.py
index 31829a18b..e4989b4fe 100755
--- a/test/functional/wallet_balance.py
+++ b/test/functional/wallet_balance.py
@@ -215,10 +215,10 @@ class WalletTest(BitcoinTestFramework):
         # dynamically loading the wallet.
         before = self.nodes[1].getbalances()['mine']['untrusted_pending']
         dst = self.nodes[1].getnewaddress()
-        self.nodes[1].unloadwallet('')
+        self.nodes[1].unloadwallet(self.default_wallet_name)
         self.nodes[0].sendtoaddress(dst, 0.1)
         self.sync_all()
-        self.nodes[1].loadwallet('')
+        self.nodes[1].loadwallet(self.default_wallet_name)
         after = self.nodes[1].getbalances()['mine']['untrusted_pending']
         assert_equal(before + Decimal('0.1'), after)
 
diff --git a/test/functional/wallet_descriptor.py b/test/functional/wallet_descriptor.py
index 9c63e8f7d..62eb15f87 100755
--- a/test/functional/wallet_descriptor.py
+++ b/test/functional/wallet_descriptor.py
@@ -24,7 +24,7 @@ class WalletDescriptorTest(BitcoinTestFramework):
         # Make a descriptor wallet
         self.log.info("Making a descriptor wallet")
         self.nodes[0].createwallet(wallet_name="desc1", descriptors=True)
-        self.nodes[0].unloadwallet("")
+        self.nodes[0].unloadwallet(self.default_wallet_name)
 
         # A descriptor wallet should have 100 addresses * 3 types = 300 keys
         self.log.info("Checking wallet info")
diff --git a/test/functional/wallet_disable.py b/test/functional/wallet_disable.py
index 7c2ec56b5..c2b30fb35 100755
--- a/test/functional/wallet_disable.py
+++ b/test/functional/wallet_disable.py
@@ -16,6 +16,7 @@ class DisableWalletTest (BitcoinTestFramework):
         self.setup_clean_chain = True
         self.num_nodes = 1
         self.extra_args = [["-disablewallet"]]
+        self.wallet_names = []
 
     def run_test (self):
         # Make sure wallet is really disabled
diff --git a/test/functional/wallet_hd.py b/test/functional/wallet_hd.py
index 3c336623e..5af14ecb8 100755
--- a/test/functional/wallet_hd.py
+++ b/test/functional/wallet_hd.py
@@ -84,7 +84,7 @@ class WalletHDTest(BitcoinTestFramework):
         shutil.rmtree(os.path.join(self.nodes[1].datadir, self.chain, "chainstate"))
         shutil.copyfile(
             os.path.join(self.nodes[1].datadir, "hd.bak"),
-            os.path.join(self.nodes[1].datadir, self.chain, 'wallets', "wallet.dat"),
+            os.path.join(self.nodes[1].datadir, self.chain, 'wallets', self.default_wallet_name, self.wallet_data_filename),
         )
         self.start_node(1)
 
@@ -112,7 +112,7 @@ class WalletHDTest(BitcoinTestFramework):
         shutil.rmtree(os.path.join(self.nodes[1].datadir, self.chain, "chainstate"))
         shutil.copyfile(
             os.path.join(self.nodes[1].datadir, "hd.bak"),
-            os.path.join(self.nodes[1].datadir, self.chain, "wallets", "wallet.dat"),
+            os.path.join(self.nodes[1].datadir, self.chain, "wallets", self.default_wallet_name, self.wallet_data_filename),
         )
         self.start_node(1, extra_args=self.extra_args[1])
         connect_nodes(self.nodes[0], 1)
diff --git a/test/functional/wallet_import_rescan.py b/test/functional/wallet_import_rescan.py
index 87deaded0..9d532742e 100755
--- a/test/functional/wallet_import_rescan.py
+++ b/test/functional/wallet_import_rescan.py
@@ -151,7 +151,7 @@ class ImportRescanTest(BitcoinTestFramework):
         self.skip_if_no_wallet()
 
     def setup_network(self):
-        self.extra_args = [["-wallet="] for _ in range(self.num_nodes)]
+        self.extra_args = [[] for _ in range(self.num_nodes)]
         for i, import_node in enumerate(IMPORT_NODES, 2):
             if import_node.prune:
                 self.extra_args[i] += ["-prune=1"]
@@ -159,9 +159,8 @@ class ImportRescanTest(BitcoinTestFramework):
         self.add_nodes(self.num_nodes, extra_args=self.extra_args)
 
         # Import keys with pruning disabled
-        self.start_nodes(extra_args=[["-wallet="]] * self.num_nodes)
-        for n in self.nodes:
-            n.importprivkey(privkey=n.get_deterministic_priv_key().key, label='coinbase')
+        self.start_nodes(extra_args=[[]] * self.num_nodes)
+        self.import_deterministic_coinbase_privkeys()
         self.stop_nodes()
 
         self.start_nodes()
diff --git a/test/functional/wallet_importmulti.py b/test/functional/wallet_importmulti.py
index bd4fcdabc..f7fdd6e90 100755
--- a/test/functional/wallet_importmulti.py
+++ b/test/functional/wallet_importmulti.py
@@ -820,7 +820,7 @@ class ImportMultiTest(BitcoinTestFramework):
 
         # Cannot import those pubkeys to keypool of wallet with privkeys
         self.log.info("Pubkeys cannot be added to the keypool of a wallet with private keys")
-        wrpc = self.nodes[1].get_wallet_rpc("")
+        wrpc = self.nodes[1].get_wallet_rpc(self.default_wallet_name)
         assert wrpc.getwalletinfo()['private_keys_enabled']
         result = wrpc.importmulti(
             [{
diff --git a/test/functional/wallet_keypool.py b/test/functional/wallet_keypool.py
index 40a2b3ab6..51795aca2 100755
--- a/test/functional/wallet_keypool.py
+++ b/test/functional/wallet_keypool.py
@@ -143,7 +143,7 @@ class KeyPoolTest(BitcoinTestFramework):
         w2 = nodes[0].get_wallet_rpc('w2')
 
         # refer to initial wallet as w1
-        w1 = nodes[0].get_wallet_rpc('')
+        w1 = nodes[0].get_wallet_rpc(self.default_wallet_name)
 
         # import private key and fund it
         address = addr.pop()
diff --git a/test/functional/wallet_keypool_topup.py b/test/functional/wallet_keypool_topup.py
index 102ed23fb..3f865b330 100755
--- a/test/functional/wallet_keypool_topup.py
+++ b/test/functional/wallet_keypool_topup.py
@@ -30,7 +30,7 @@ class KeypoolRestoreTest(BitcoinTestFramework):
         self.skip_if_no_wallet()
 
     def run_test(self):
-        wallet_path = os.path.join(self.nodes[1].datadir, self.chain, "wallets", "wallet.dat")
+        wallet_path = os.path.join(self.nodes[1].datadir, self.chain, "wallets", self.default_wallet_name, self.wallet_data_filename)
         wallet_backup_path = os.path.join(self.nodes[1].datadir, "wallet.bak")
         self.nodes[0].generate(101)
 
diff --git a/test/functional/wallet_multiwallet.py b/test/functional/wallet_multiwallet.py
index f0be271c6..155a3be7e 100755
--- a/test/functional/wallet_multiwallet.py
+++ b/test/functional/wallet_multiwallet.py
@@ -41,7 +41,6 @@ class MultiWalletTest(BitcoinTestFramework):
         self.setup_clean_chain = True
         self.num_nodes = 2
         self.rpc_timeout = 120
-        self.extra_args = [["-wallet="], ["-wallet="]]
 
     def skip_test_if_missing_module(self):
         self.skip_if_no_wallet()
@@ -62,14 +61,14 @@ class MultiWalletTest(BitcoinTestFramework):
 
         def wallet_file(name):
             if os.path.isdir(wallet_dir(name)):
-                return wallet_dir(name, "wallet.dat")
+                return wallet_dir(name, self.wallet_data_filename)
             return wallet_dir(name)
 
-        assert_equal(self.nodes[0].listwalletdir(), { 'wallets': [{ 'name': '' }] })
+        assert_equal(self.nodes[0].listwalletdir(), { 'wallets': [{ 'name': self.default_wallet_name }] })
 
         # check wallet.dat is created
         self.stop_nodes()
-        assert_equal(os.path.isfile(wallet_dir('wallet.dat')), True)
+        assert_equal(os.path.isfile(wallet_dir(self.default_wallet_name, self.wallet_data_filename)), True)
 
         # create symlink to verify wallet directory path can be referenced
         # through symlink
@@ -78,13 +77,13 @@ class MultiWalletTest(BitcoinTestFramework):
 
         # rename wallet.dat to make sure plain wallet file paths (as opposed to
         # directory paths) can be loaded
-        os.rename(wallet_dir("wallet.dat"), wallet_dir("w8"))
+        os.rename(wallet_dir(self.default_wallet_name, self.wallet_data_filename), wallet_dir("w8"))
 
         # create another dummy wallet for use in testing backups later
-        self.start_node(0, ["-wallet="])
+        self.start_node(0, ["-nowallet", "-wallet=" + self.default_wallet_name])
         self.stop_nodes()
         empty_wallet = os.path.join(self.options.tmpdir, 'empty.dat')
-        os.rename(wallet_dir("wallet.dat"), empty_wallet)
+        os.rename(wallet_dir(self.default_wallet_name, self.wallet_data_filename), empty_wallet)
 
         # restart node with a mix of wallet names:
         #   w1, w2, w3 - to verify new wallets created when non-existing paths specified
@@ -94,10 +93,10 @@ class MultiWalletTest(BitcoinTestFramework):
         #   w7_symlink - to verify symlinked wallet path is initialized correctly
         #   w8         - to verify existing wallet file is loaded correctly
         #   ''         - to verify default wallet file is created correctly
-        wallet_names = ['w1', 'w2', 'w3', 'w', 'sub/w5', os.path.join(self.options.tmpdir, 'extern/w6'), 'w7_symlink', 'w8', '']
-        extra_args = ['-wallet={}'.format(n) for n in wallet_names]
+        wallet_names = ['w1', 'w2', 'w3', 'w', 'sub/w5', os.path.join(self.options.tmpdir, 'extern/w6'), 'w7_symlink', 'w8', self.default_wallet_name]
+        extra_args = ['-nowallet'] + ['-wallet={}'.format(n) for n in wallet_names]
         self.start_node(0, extra_args)
-        assert_equal(sorted(map(lambda w: w['name'], self.nodes[0].listwalletdir()['wallets'])), ['', os.path.join('sub', 'w5'), 'w', 'w1', 'w2', 'w3', 'w7', 'w7_symlink', 'w8'])
+        assert_equal(sorted(map(lambda w: w['name'], self.nodes[0].listwalletdir()['wallets'])), [self.default_wallet_name, os.path.join('sub', 'w5'), 'w', 'w1', 'w2', 'w3', 'w7', 'w7_symlink', 'w8'])
 
         assert_equal(set(node.listwallets()), set(wallet_names))
 
@@ -108,7 +107,7 @@ class MultiWalletTest(BitcoinTestFramework):
 
         # should not initialize if wallet path can't be created
         exp_stderr = "boost::filesystem::create_directory:"
-        self.nodes[0].assert_start_raises_init_error(['-wallet=wallet.dat/bad'], exp_stderr, match=ErrorMatch.PARTIAL_REGEX)
+        self.nodes[0].assert_start_raises_init_error(['-wallet=w8/bad'], exp_stderr, match=ErrorMatch.PARTIAL_REGEX)
 
         self.nodes[0].assert_start_raises_init_error(['-walletdir=wallets'], 'Error: Specified -walletdir "wallets" does not exist')
         self.nodes[0].assert_start_raises_init_error(['-walletdir=wallets'], 'Error: Specified -walletdir "wallets" is a relative path', cwd=data_dir())
@@ -136,14 +135,14 @@ class MultiWalletTest(BitcoinTestFramework):
         # if wallets/ doesn't exist, datadir should be the default wallet dir
         wallet_dir2 = data_dir('walletdir')
         os.rename(wallet_dir(), wallet_dir2)
-        self.start_node(0, ['-wallet=w4', '-wallet=w5'])
+        self.start_node(0, ['-nowallet', '-wallet=w4', '-wallet=w5'])
         assert_equal(set(node.listwallets()), {"w4", "w5"})
         w5 = wallet("w5")
         node.generatetoaddress(nblocks=1, address=w5.getnewaddress())
 
         # now if wallets/ exists again, but the rootdir is specified as the walletdir, w4 and w5 should still be loaded
         os.rename(wallet_dir2, wallet_dir())
-        self.restart_node(0, ['-wallet=w4', '-wallet=w5', '-walletdir=' + data_dir()])
+        self.restart_node(0, ['-nowallet', '-wallet=w4', '-wallet=w5', '-walletdir=' + data_dir()])
         assert_equal(set(node.listwallets()), {"w4", "w5"})
         w5 = wallet("w5")
         w5_info = w5.getwalletinfo()
@@ -151,13 +150,13 @@ class MultiWalletTest(BitcoinTestFramework):
 
         competing_wallet_dir = os.path.join(self.options.tmpdir, 'competing_walletdir')
         os.mkdir(competing_wallet_dir)
-        self.restart_node(0, ['-walletdir=' + competing_wallet_dir, '-wallet='])
+        self.restart_node(0, ['-walletdir=' + competing_wallet_dir])
         exp_stderr = r"Error: Error initializing wallet database environment \"\S+competing_walletdir\"!"
         self.nodes[1].assert_start_raises_init_error(['-walletdir=' + competing_wallet_dir], exp_stderr, match=ErrorMatch.PARTIAL_REGEX)
 
         self.restart_node(0, extra_args)
 
-        assert_equal(sorted(map(lambda w: w['name'], self.nodes[0].listwalletdir()['wallets'])), ['', os.path.join('sub', 'w5'), 'w', 'w1', 'w2', 'w3', 'w7', 'w7_symlink', 'w8', 'w8_copy'])
+        assert_equal(sorted(map(lambda w: w['name'], self.nodes[0].listwalletdir()['wallets'])), [self.default_wallet_name, os.path.join('sub', 'w5'), 'w', 'w1', 'w2', 'w3', 'w7', 'w7_symlink', 'w8', 'w8_copy'])
 
         wallets = [wallet(w) for w in wallet_names]
         wallet_bad = wallet("bad")
@@ -247,12 +246,12 @@ class MultiWalletTest(BitcoinTestFramework):
         assert_raises_rpc_error(-18, "Wallet file verification failed. Failed to load database path '{}'. Path does not exist.".format(path), self.nodes[0].loadwallet, 'wallets')
 
         # Fail to load duplicate wallets
-        path = os.path.join(self.options.tmpdir, "node0", "regtest", "wallets", "w1", "wallet.dat")
+        path = os.path.join(self.options.tmpdir, "node0", "regtest", "wallets", "w1", self.wallet_data_filename)
         assert_raises_rpc_error(-4, "Wallet file verification failed. Refusing to load database. Data file '{}' is already loaded.".format(path), self.nodes[0].loadwallet, wallet_names[0])
 
         # Fail to load duplicate wallets by different ways (directory and filepath)
-        path = os.path.join(self.options.tmpdir, "node0", "regtest", "wallets", "wallet.dat")
-        assert_raises_rpc_error(-4, "Wallet file verification failed. Refusing to load database. Data file '{}' is already loaded.".format(path), self.nodes[0].loadwallet, 'wallet.dat')
+        path = os.path.join(self.options.tmpdir, "node0", "regtest", "wallets", self.wallet_data_filename)
+        assert_raises_rpc_error(-4, "Wallet file verification failed. Refusing to load database. Data file '{}' is already loaded.".format(path), self.nodes[0].loadwallet, self.wallet_data_filename)
 
         # Fail to load if one wallet is a copy of another
         assert_raises_rpc_error(-4, "BerkeleyDatabase: Can't open database w8_copy (duplicates fileid", self.nodes[0].loadwallet, 'w8_copy')
@@ -324,7 +323,7 @@ class MultiWalletTest(BitcoinTestFramework):
         assert_equal(self.nodes[0].listwallets(), ['w1'])
         assert_equal(w1.getwalletinfo()['walletname'], 'w1')
 
-        assert_equal(sorted(map(lambda w: w['name'], self.nodes[0].listwalletdir()['wallets'])), ['', os.path.join('sub', 'w5'), 'w', 'w1', 'w2', 'w3', 'w7', 'w7_symlink', 'w8', 'w8_copy', 'w9'])
+        assert_equal(sorted(map(lambda w: w['name'], self.nodes[0].listwalletdir()['wallets'])), [self.default_wallet_name, os.path.join('sub', 'w5'), 'w', 'w1', 'w2', 'w3', 'w7', 'w7_symlink', 'w8', 'w8_copy', 'w9'])
 
         # Test backing up and restoring wallets
         self.log.info("Test wallet backup")
diff --git a/test/functional/wallet_reorgsrestore.py b/test/functional/wallet_reorgsrestore.py
index 455f1fc5e..5c24d466c 100755
--- a/test/functional/wallet_reorgsrestore.py
+++ b/test/functional/wallet_reorgsrestore.py
@@ -89,7 +89,7 @@ class ReorgsRestoreTest(BitcoinTestFramework):
         # Node0 wallet file is loaded on longest sync'ed node1
         self.stop_node(1)
         self.nodes[0].backupwallet(os.path.join(self.nodes[0].datadir, 'wallet.bak'))
-        shutil.copyfile(os.path.join(self.nodes[0].datadir, 'wallet.bak'), os.path.join(self.nodes[1].datadir, self.chain, 'wallet.dat'))
+        shutil.copyfile(os.path.join(self.nodes[0].datadir, 'wallet.bak'), os.path.join(self.nodes[1].datadir, self.chain, self.default_wallet_name, self.wallet_data_filename))
         self.start_node(1)
         tx_after_reorg = self.nodes[1].gettransaction(txid)
         # Check that normal confirmed tx is confirmed again but with different blockhash
diff --git a/test/functional/wallet_send.py b/test/functional/wallet_send.py
index 4fdfad01c..876eb7f29 100755
--- a/test/functional/wallet_send.py
+++ b/test/functional/wallet_send.py
@@ -156,7 +156,7 @@ class WalletSendTest(BitcoinTestFramework):
     def run_test(self):
         self.log.info("Setup wallets...")
         # w0 is a wallet with coinbase rewards
-        w0 = self.nodes[0].get_wallet_rpc("")
+        w0 = self.nodes[0].get_wallet_rpc(self.default_wallet_name)
         # w1 is a regular wallet
         self.nodes[1].createwallet(wallet_name="w1")
         w1 = self.nodes[1].get_wallet_rpc("w1")
diff --git a/test/functional/wallet_upgradewallet.py b/test/functional/wallet_upgradewallet.py
index 031da8da8..446a601ae 100755
--- a/test/functional/wallet_upgradewallet.py
+++ b/test/functional/wallet_upgradewallet.py
@@ -27,10 +27,11 @@ class UpgradeWalletTest(BitcoinTestFramework):
         self.setup_clean_chain = True
         self.num_nodes = 3
         self.extra_args = [
-            ["-addresstype=bech32", "-wallet="], # current wallet version
+            ["-addresstype=bech32"], # current wallet version
             ["-usehd=1"],            # v0.16.3 wallet
             ["-usehd=0"]             # v0.15.2 wallet
         ]
+        self.wallet_names = [self.default_wallet_name, None, None]
 
     def skip_test_if_missing_module(self):
         self.skip_if_no_wallet()
@@ -46,6 +47,7 @@ class UpgradeWalletTest(BitcoinTestFramework):
             150200,
         ])
         self.start_nodes()
+        self.import_deterministic_coinbase_privkeys()
 
     def dumb_sync_blocks(self):
         """