If you cannot complete and file your Form 502, 505, 510C or
515 by the due date, you should complete the Tax Payment
Worksheet to determine if you must file for an extension. If
line 6 of the worksheet shows you owe tax, you must file
Form PV and pay the full amount due by April 15, 2022, (or
the 15th day of the fourth month following the close of the
tax year). If the due date falls on a Saturday, Sunday or legal
holiday, the return must be filed by the next business day.
NOTE: Filing an extension does not extend the time for
paying your taxes.
However, be aware that if an unpaid liability is disclosed
when you file your return, you may owe penalty and interest
charges in addition to the tax.
Automatic Maryland six-month extension
If you filed a federal extension and expect to owe zero tax
to Maryland we grant you an automatic six-month extension
of time to file your Form 502, 505, 510C or 515. You are
not required to file for an extension in order to obtain
this automatic extension.
so you will owe penalties and interest if you did not pay the balance due on or before 4/15
