Form 1099-R Box 7a
Code 1: Early distribution, no known exception
The payer believes the recipient was under age 59½ and does not know of an exception.
Usual federal tax treatment
The taxable amount is generally ordinary income and may also face the 10% additional tax.
What to do next
Enter the distribution on Form 1040 and use Form 5329 if you claim an exception the payer did not know about.
Where code 1 flows on your return
The taxable amount generally flows to Form 1040 Line 4b if the distribution came from an IRA, or Line 5b if it came from an employer plan or pension (the gross amount goes on the paired Line 4a/5a). Because the payer marked code 1, you also need Form 5329, Part I, to calculate the 10% additional tax on the taxable portion — or to claim an exception the payer did not know about, using one of the numbered exception codes on Form 5329, Line 2. If code 1 is correctly shown on every 1099-R you received and you owe the additional tax on the full amount shown on each one, the IRS lets you skip Form 5329 and report the tax directly on Schedule 2 instead.
How code 1 works
Code 1 means the payer had no evidence on file that an exception to the 10% additional tax applied when you received the distribution before turning 59½. This is the most common early-distribution code and does not, by itself, mean an exception does not exist — it only means the payer is not tracking one for you.
If you qualify for an exception the payer was not aware of — separation from service after age 55, a series of substantially equal periodic payments, disability, a qualified domestic relations order, unreimbursed medical expenses over the AGI floor, or one of the other statutory exceptions — you claim it directly on Form 5329, Part I, using the matching exception number, rather than asking the payer for a corrected 1099-R.
Worked example
Sam, age 45, cashes out a $30,000 traditional 401(k) after leaving his job, with no rollover. Box 1 shows $30,000, Box 2a shows $30,000, and Box 7a shows code 1. On his return, $30,000 flows to Form 1040 Line 5a and 5b as taxable pension income. Because he has no exception, Form 5329, Part I, adds a $3,000 additional tax (10% of $30,000) on top of his regular income tax on the distribution.
Estimate this distribution
Enter Box 1, Box 2a, Box 4, your age, other income, and code 1 to estimate taxable income and possible additional tax.
Open the 1099-R calculatorFrequently asked questions
Does code 1 always mean I owe the 10% additional tax?
Not necessarily. Code 1 only means the payer did not have proof of an exception on file. If you qualify for a statutory exception — disability, medical expenses over the AGI floor, a qualifying rollover, and others — you claim it on Form 5329, Part I, when you file. The 1099-R itself does not need to be corrected.
Which form calculates the 10% additional tax for code 1?
Form 5329, Part I. It multiplies the taxable portion of the early distribution by 10% unless you enter an exception code and the excepted amount on Line 2. If code 1 is correct on all your 1099-Rs and you owe the tax on the full amount, you can instead report it directly on Schedule 2, Line 8, and skip filing Form 5329.
Is the 10% additional tax the same as ordinary income tax?
No. It is a separate additional tax layered on top of your regular federal income tax on the taxable distribution. Both use Box 2a (or your own basis calculation) as the taxable amount, but they are computed and reported separately.