My wife's mother died in 2016 and a Traditional IRA was cashed in. State and federal taxes were withheld. We have a W-4P form showing the amount. How do we report it?

[MichaelL1]

There should be a 1099R for the IRA distribution.  That 1099R needs to be reported on the tax return.  

The W4P is a form that just shows how much taxes to withhold.  That W4P does not get entered in TurboTax, only the 1099R.

To enter the 1099R:

To enter pension and annuity Payments (1099-R)

• Click on Federal Taxes 
• Click on Wages and Income 
• Click on I'll choose what I work on (if shown)
• Scroll down to Retirement Plans and Social Security
• On IRA, 401(k), Pension Plan Withdrawals (1099-R), click the start or update button