I was left a portion of my mothers pension when she died. The lump sum was taxed before it was distributed. Do I still have to claim the money as income and does that mean it gets taxed again?

[dmertz]

Thin income is includible on your tax return by entering the Form 1099-R into TurboTax to determine the true increase in your tax liability resulting from this distribution and whatever amount was withheld for federal taxes, shown in box 4 of the Form 1099-R, is separately credited on Form 1040 line 17.