1099-R Code A: May Be Eligible for 10-Year Tax Option

A special old-law tax computation might apply to this lump sum.

What the IRS instructions say

Official meaning, from the Instructions for Forms 1099-R and 5498 The lump-sum distribution may be eligible for the 10-year tax option on Form 4972, only for participants born before January 2, 1936, or their beneficiaries.

Is it taxable, and does the 10 percent penalty apply?

The distribution is taxable, but code A signals you may elect a favorable old-law method on Form 4972: 10-year averaging, and for the pre-1974 portion, capital gain treatment. Both can lower the tax on a large lump sum. Eligibility is narrow: the plan participant, or their beneficiary, must have been born before January 2, 1936, and it must be a qualifying lump-sum distribution.

Worth knowing: Form 4972 is one of the few places pre-1974 plan participation still matters. If you were born before 1936 and took a lump sum, it is worth running the Form 4972 math against ordinary rates to see which is lower.

Combinations you might see

Box 7 can carry two codes. With code A, the pairings mean:

7A: a normal-age lump sum that may qualify for the 10-year option
4A: the same option available to a beneficiary after the participant's death

If this code looks wrong

The IRS matches Box 7 against your return, so start with the payer: request a corrected 1099-R, which is the IRS's standing instruction for incorrect forms. No corrected copy by the end of February? The IRS can contact the payer for you, and Form 4852 substitutes as a last resort. Remember that an indirect 60-day rollover is correctly coded 1 or 7, because the payer cannot see the redeposit; direct rollovers should show G or H, as our rollover guide explains before the paperwork ever gets cut.

← All 1099-R Box 7 codes

Sources: IRS Instructions for Forms 1099-R and 5498; IRS Tax Topics 558 (early distributions), 413 (rollovers), and 154 (incorrect forms). Verified July 2026.

General educational information, not tax advice. Your distribution's taxation depends on your facts; consult a qualified tax professional. ClearChoiceRadar is not affiliated with the IRS or any government agency.