If I under-reported my property taxes last year, can I claim them this year?

[cattail722]

I was looking at last year's return and think that I under-reported the amount of property taxes I paid last year by half.  I ended up owing Federal taxes, when I never had before.  I'm wondering if it is possible to claim the under-reported property taxes from last year this year instead?

[ChrisVonHoep · Accepted solution]

Any tax information (income, deductions, etc.) must be filed in for the tax year it corresponds to. 

Example: You cannot report 2016 W-2 income on your 2017 tax return.

You would have to file a separate prior year return if you have not already. 

If you have, you would have to amend that year with the new information.

To file a prior year:

TurboTax Online is closed for filing prior years.

In order to prepare prior year tax returns, you need the respective TurboTax Desktop (Download/CD) for each year you are preparing.

Please see the following (TurboTax Desktop software is available for each of the three prior tax years (2014, 2015, 2016)):

https://ttlc.intuit.com/replies/6440394

To amend a prior year:

Please see the following and click on the year in question: 

 https://ttlc.intuit.com/replies/3288565