diff --git a/src/accounting/__init__.py b/src/accounting/__init__.py
index 7a389c9..81a2fee 100644
--- a/src/accounting/__init__.py
+++ b/src/accounting/__init__.py
@@ -63,8 +63,9 @@ def init_app(app: Flask, user_utils: UserUtilityInterface,
     bp.add_app_template_global(default_currency_code,
                                "accounting_default_currency_code")
 
-    from .commands import init_db_command
+    from .commands import init_db_command, titleize_command
     app.cli.add_command(init_db_command)
+    app.cli.add_command(titleize_command)
 
     from . import locale
     locale.init_app(app, bp)
diff --git a/src/accounting/commands.py b/src/accounting/commands.py
index 5ecb235..d262ef1 100644
--- a/src/accounting/commands.py
+++ b/src/accounting/commands.py
@@ -26,7 +26,10 @@ from accounting import db
 from accounting.account import init_accounts_command
 from accounting.base_account import init_base_accounts_command
 from accounting.currency import init_currencies_command
-from accounting.utils.user import has_user
+from accounting.models import BaseAccount, Account
+from accounting.utils.title_case import title_case
+from accounting.utils.user import has_user, get_user_pk
+import sqlalchemy as sa
 
 
 def __validate_username(ctx: click.core.Context, param: click.core.Option,
@@ -60,3 +63,32 @@ def init_db_command(username: str) -> None:
     init_currencies_command(username)
     db.session.commit()
     click.echo("Accounting database initialized.")
+
+
+@click.command("accounting-titleize")
+@click.option("-u", "--username", metavar="USERNAME", prompt=True,
+              help="The username.", callback=__validate_username,
+              default=lambda: os.getlogin())
+@with_appcontext
+def titleize_command(username: str) -> None:
+    """Capitalize the account titles."""
+    updater_pk: int = get_user_pk(username)
+    updated: int = 0
+    for base in BaseAccount.query:
+        new_title: str = title_case(base.title_l10n)
+        if base.title_l10n != new_title:
+            base.title_l10n = new_title
+            updated = updated + 1
+    for account in Account.query:
+        if account.title_l10n.lower() == account.base.title_l10n.lower():
+            new_title: str = title_case(account.title_l10n)
+            if account.title_l10n != new_title:
+                account.title_l10n = new_title
+                account.updated_at = sa.func.now()
+                account.updated_by_id = updater_pk
+                updated = updated + 1
+    if updated == 0:
+        click.echo("All account titles were already capitalized.")
+        return
+    db.session.commit()
+    click.echo(f"{updated} account titles capitalized.")
diff --git a/tests/test_commands.py b/tests/test_commands.py
index 25d945b..811ec09 100644
--- a/tests/test_commands.py
+++ b/tests/test_commands.py
@@ -18,6 +18,7 @@
 
 """
 import csv
+import datetime as dt
 import re
 import unittest
 from typing import Any
@@ -177,3 +178,69 @@ class ConsoleCommandTestCase(unittest.TestCase):
                 self.assertIn(locale, data[currency.code]["l10n"])
                 self.assertEqual(l10n[locale],
                                  data[currency.code]["l10n"][locale])
+
+    def test_titleize(self) -> None:
+        """Tests the "accounting-titleize" console command.
+
+        :return: None.
+        """
+        from accounting.models import BaseAccount, Account
+        from accounting.utils.random_id import new_id
+        from accounting.utils.user import get_user_pk
+        runner: FlaskCliRunner = self.__app.test_cli_runner()
+
+        with self.__app.app_context():
+            # Resets the accounts.
+            tables: list[sa.Table] \
+                = [db.metadata.tables[x] for x in db.metadata.tables
+                   if x.startswith("accounting_")]
+            for table in tables:
+                db.session.execute(DropTable(table))
+            db.session.commit()
+            inspector: sa.Inspector = sa.inspect(db.session.connection())
+            self.assertEqual(len({x for x in inspector.get_table_names()
+                                  if x.startswith("accounting_")}),
+                             0)
+            result: Result = runner.invoke(
+                args=["accounting-init-db", "-u", "editor"])
+            self.assertEqual(result.exit_code, 0,
+                             result.output + str(result.exception))
+
+            # Turns the titles into lowercase.
+            for base in BaseAccount.query:
+                base.title_l10n = base.title_l10n.lower()
+            for account in Account.query:
+                account.title_l10n = account.title_l10n.lower()
+                account.created_at \
+                    = account.created_at - dt.timedelta(seconds=5)
+                account.updated_at = account.created_at
+
+            # Adds a custom account.
+            custom_title = "MBK Bank"
+            creator_pk: int = get_user_pk("editor")
+            new_account: Account = Account(
+                id=new_id(Account),
+                base_code="1112",
+                no="2",
+                title_l10n=custom_title,
+                is_need_offset=False,
+                created_by_id=creator_pk,
+                updated_by_id=creator_pk)
+            db.session.add(new_account)
+            db.session.commit()
+
+            result: Result = runner.invoke(
+                args=["accounting-titleize", "-u", "editor"])
+            self.assertEqual(result.exit_code, 0,
+                             result.output + str(result.exception))
+            for base in BaseAccount.query:
+                self.__test_title_case(base.title_l10n)
+            for account in Account.query:
+                if account.id != new_account.id:
+                    self.__test_title_case(account.title_l10n)
+                    self.assertNotEqual(account.created_at, account.updated_at)
+                else:
+                    self.assertEqual(account.title_l10n, custom_title)
+
+            db.session.delete(new_account)
+            db.session.commit()