I paid additional state income taxes for 2015 in 2018. Can I deduct the additional state tax paid on my 2018 return?

[VolvoGirl]

Yes if you Itemize, although there is now a cap on SALT.  Most people will be switching to the Standard Deduction since it is doubling.

FAQ on 2018 changes <a rel="nofollow" target="_blank" href="https://ttlc.intuit.com/questions/4482394-how-will-tax-reform-affect-my-2018-federal-tax-return">htt...>

[dmucxf10]

where do I deduct?

[VolvoGirl]

You can deduct any state taxes paid (for any year) or state estimates actually paid in during the year on your federal return if you Itemize deductions.  But just the tax, not any interest or penalties.

See
<a rel="nofollow" target="_blank" href="https://ttlc.intuit.com/replies/3302371">https://ttlc.intuit.com/replies/3302371</a>

[crazysteps]

identity protection pin

[Opus 17 · Accepted solution]

Yes, you deduct state taxes when you actually pay them, even if they were due from a previous year.

[wmblock]

How/wherer do I deduct the tax?

[VolvoGirl]

You can deduct any state taxes paid (for any year) or state estimates actually paid in during the year on your federal return if you Itemize deductions.  But just the tax, not anyReport Estimated Taxes for 2016interest or penalties. 

See

https://ttlc.intuit.com/replies/3302371

[teresamorgan0301969]

Hello, @Opus 17 

Where in TT online do I enter the additional state taxes paid? 

Thank you,

Teresa M. 

[Opus 17]

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@teresamorgan0301969 wrote:

Hello, @Opus 17 

Where in TT online do I enter the additional state taxes paid? 

Thank you,

Teresa M. 

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On the Deductions and Credits page there is a section for "Estimates and other taxes paid".  You may have to click something like "show me more options" or "let me choose what to work on" if it doesn't come up right away.  There is one page for entering 2020 estimated taxes (state and federal) and another page where you can enter state taxes paid for a prior year.