What is the code in box 7 of the Form 1099-R provided by the payer?
Is the IRA/SEP/SIMPLE box marked?
Did you roll any of this distribution over to another retirement account?
Was any of this distribution a Qualified Charitable Distribution or an HSA Funding Distribution?
The taxable amount of a regular traditional IRA distribution that you did not roll over or treat as a QCD or HFD is the entire amount unless you have basis in nondeductible traditional IRA contributions. If you have basis in nondeductible traditional IRA contributions, the taxable amount of the distribution is determined on Form 8606 Part I and the resulting taxable amount would be less than the full amount of the distribution.
If you are seeing more than the box 1 amount for the Form 1099-R being included on Form 1040 line 4b, the additional amount must be coming from a different Form 1099-R that you entered.
