Comptroller of Maryland. Serving the People. Peter Franchot, Comptroller
Maryland Taxes
Maryland Taxes: Find all tax-related information and services. Maryland's Money: Resource for transparent financial reporting. Comptroller of Maryland: Information and resources for government agencies, state employees, vendors, and the general public. Media Services: Outlet for agency and Comptroller news. Online Services: Links to all agency online services and applications. Search Engine: Find it Fast! Home Page

Frequently Asked Questions About Income Tax

5. What if I made a mistake on my return. How do I correct it?

If you need to change a return that you have already filed, or if the IRS changes your return, you must file an
amended return. Resident individuals should file Form 502X. Nonresident individuals should file Form 505X.

Links for Income Tax FAQs
Taxpayer Assistance
Frequently Asked Questions
Individual Tax FAQs
Income Tax FAQs
  q1 - Do I have to file a Maryland income tax return?
  q2 - How can I file electronically?
  q3 - Is there a tax break for two-income families?
  q4 - What if I live in Maryland but commute to work in Delaware?
  q5 - What if I made a mistake on my return. How do I correct it?
  q6 - Does Maryland offer a tax break for child care expenses?
  q7 - What if I live in Maryland and work in Washington, D.C.?
  q8 - Can I put the full amount of the earned income credit from my federal return on Form 502 or Form 505?
  q9 - I am retired from the federal government. Can I have state tax withheld from my pension?
  q10 - What is the local income tax?
  q11 - Does Maryland have any tax checkoffs?
  q12 - Why didn't I get credit for taxes I paid to another state?
  q13 - I am a part-year resident of Maryland and I want to use another method for allocating my itemized deductions. What do I do?
  q14 - Should I use the pre-printed address label on my Maryland tax return?
  q15 - How can I check on my income tax refund?
  q16 - Who should pay estimated taxes?
  q17 - When should I file my estimated tax?
  q18 - Can I pay my personal income tax liability with a credit card?
  q19 - How do I make a payment arrangement?
  q20 - Why did I receive an assessment stating I owe Maryland tax, but I never lived in Maryland?
  q21 - Who is considered a nonresident for Maryland tax purposes?
  q22 - Is there a tax break for contributions I make to College Savings Plans of Maryland?
  q23 - I received a 1099G form recently. What is this form all about?
  q24 - Why do I have to pay a fee when using my credit card to pay my taxes?
  q25 - How can I get a copy of my Maryland tax return?
  q26 - How can I change my tax return after I've already filed?
  q27 - How can I establish power of attorney for state tax purposes?
  q28 - Do I have to add back on my Maryland return the contributions that I make to a flexible spending account that I set up with my employer for medical expenses?
  q29 - Can same-sex couples who are legally married in another state file a joint return tax return in Maryland?
Download for Adobe Reader Homepage