I did my federal taxes through turbo tax and it had me getting a refund but I received a letter from the IRS saying I owed. What now? Why was my return wrong?

[dr_j_c_lee]

none of those help

[mesquitebean]

No one can see your situation in this public user community forum.   Was there no explanation in the IRS letter about what topic they changed?    If not, you may to phone the IRS and ask for more information.

Also, you can phone the free TurboTax Audit Support Center for help with an IRS letter.

https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-audit/turbotax-audit-support/L6AcMoN...

The phone number is about halfway down the page.   Be sure you use the one for the TurboTax Audit Support Guarantee, and not the one for Audit Defense, which is a paid third-party product.

Also see @ VolvoGirl comment below about a known cause that is happening to some people with Social Security, if that is your issue.

[VolvoGirl]

Do you get Social Security?   It may have not calculated the right taxable amount on 1040 line 6b.   After you enter your SS in the interview the next screen is a big page to answer if you  lived in a Foreign Country.  People have been skipping it or answering it wrong.  You have to check NO on that screen and for each spouse if married.

Before you file your tax return you should always review and compare it line by line to the prior year to check if the amounts look right and you have the same items on each return and on the right lines.   Then you would have seen 1040 line 6b had zero taxable Social Security and you could have questioned it.    Especially if some was taxable  last year.