U.S. · Form 1099-R box 2a
1099-R box 2a taxable amount.
What box 2a should show for each kind of distribution, scenario by scenario.
Box 2a is the taxable amount the payer reports, and it is often not the same as box 1. A traditional IRA distribution shows the full amount in box 2a with “taxable amount not determined” checked in box 2b. A direct rollover, a recharacterization or a trustee-to-trustee transfer to an employer plan shows zero. Box 2a is left blank when the payer cannot reasonably compute the taxable amount, and for most Roth IRA distributions.
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Result
Box 2a by situation
| Situation | Box 2a entry (IRS instruction) |
|---|---|
| General rule | Enter the taxable amount. If the payer cannot reasonably obtain the data needed to compute it, leave the box blank (and check the first box 2b). Do not enter excludable or tax-deferred amounts reportable in boxes 5, 6 and 8, except as box 6 allows. |
| Direct rollover (not an in-plan Roth rollover) from a qualified plan, 403(b) or governmental 457(b) to another such plan or to a traditional IRA | -0- (zero). |
| Direct rollover from a designated Roth account to a Roth IRA | -0- (zero). Code H in box 7a. |
| Direct rollover of an eligible rollover distribution to a Roth IRA (other than from a designated Roth account) | The taxable amount, with any basis recovery in box 5 and code G. |
| Traditional IRA amount paid directly to an accepting employer plan | -0- (zero), with code G. |
| IRA recharacterization | -0- (zero). |
| Nontaxable section 1035 exchange | -0- (zero), with total premiums in box 5 and code 6. |
| Traditional IRA distribution | Generally the total amount distributed, the same as box 1, with “taxable amount not determined” checked in box 2b. The payer is not required to compute basis from nondeductible contributions. |
| Traditional IRA corrective distribution before the due date (408(d)(4)) | Only the earnings, with code 8 or P. |
| Roth IRA distribution | Leave blank, except for an IRA revocation or account closure, a recharacterization, or excess contributions, where only the earnings are entered. |
| Roth IRA conversion | The total amount converted, with “taxable amount not determined” checked in box 2b and the IRA/SEP/SIMPLE checkbox checked in box 7b. Code 2 under age 59½, code 7 at 59½ or older. |
| Nonqualified designated Roth account distribution | Only the taxable earnings share. The IRS example: $5,000 distribution from a $10,000 account holding $9,400 of Roth contributions and $600 of earnings gives $300 taxable ($600 ÷ $10,000 × $5,000), $4,700 in box 5 and code B. |
| Loss on a distribution | Do not enter a negative amount. Leave box 2a blank and put the employee’s contributions in box 5. |
| Annuity starting date in 1998 or later (qualified plan) | Use the simplified method under section 72(d)(1) to figure the taxable amount. |
| Cost of current life insurance protection | Include the net premium cost in box 2a but report it on a separate form from any distribution, using code 9. |
Why box 1 and box 2a differ
Box 1 is the gross amount that left the account. Box 2a is the part the payer says is taxable. They match for a traditional IRA because the IRS lets IRA trustees skip the work of tracking nondeductible contributions. They do not match for a rollover (zero taxable), a Roth distribution (usually blank) or a plan distribution that returns after-tax money (the return of basis shows in box 5 instead).
Blank box 2a is not the same as zero
Zero is an affirmative statement that nothing is taxable. Blank, together with the first box 2b checked, means the payer could not reasonably work out the taxable amount. For anything except a traditional IRA the instructions say the payer must make every effort to compute it.
Worked example
Luis takes a $12,000 distribution from his traditional IRA. The Form 1099-R shows $12,000 in box 1, $12,000 in box 2a and an X in “taxable amount not determined” in box 2b. If he made nondeductible contributions in past years, he and not the custodian has to track that basis, because the custodian is not required to. The figure is illustrative.
Limits
This page shows how the IRS tells payers to fill in the box. It does not compute your tax. If a form looks wrong, the payer can file a corrected Form 1099-R.
Sources
- Instructions for Forms 1099-R and 5498 (2026): Table 1 distribution codes and the instructions for the 1099-R boxes covered above. Read November 2, 2026.
IRS page last reviewed June 23, 2026. This is the 2026 edition of the instructions, written for forms filed for 2026 distributions; the IRS revises it each year, so check the current edition before relying on a code.
Frequently asked questions
What is box 2a on Form 1099-R?
Box 2a is the taxable amount of the distribution as reported by the payer. It can be less than, equal to or blank compared with the gross distribution in box 1.
Why is box 2a the same as box 1 on my IRA 1099-R?
Because the IRS instructions say that, in general, payers report the total traditional IRA distribution in box 2a and check “taxable amount not determined” in box 2b, rather than working out the basis from nondeductible contributions.
Why is box 2a blank on my 1099-R?
Either the payer could not reasonably obtain the data to compute the taxable amount (box 2b “taxable amount not determined” is then checked), or it is a Roth IRA distribution, where box 2a is generally blank.
When is box 2a zero?
For direct rollovers between qualified plans or to a traditional IRA, a designated Roth account direct rollover to a Roth IRA, an IRA recharacterization, a traditional IRA amount sent directly to an employer plan, and nontaxable section 1035 exchanges.
Can box 2a be negative?
No. If a distribution is a loss, the instructions say not to enter a negative amount in box 2a.
Not tax or legal advice
This page summarizes IRS instructions to payers and is not tax, legal or financial advice. A CPA, enrolled agent or the payer can confirm what applies to your situation. Everything runs in your browser; nothing you enter is sent anywhere.