How to Report Nondividend Distributions on Your 1040

A nondividend distribution reported in Box 3 of Form 1099-DIV generally does not appear anywhere on your Form 1040. You reduce your cost basis in the stock by the Box 3 amount and keep the 1099-DIV with your records. The only time you report nondividend distributions on your 1040 is after cumulative distributions have reduced your basis to zero; from that point on, the excess is a capital gain that goes on Form 8949, flows through Schedule D, and lands on Line 7.¹

Why Box 3 Usually Doesn’t Touch Your Return

A nondividend distribution is a return of your own invested capital, not a share of corporate profits. The IRS calls it a “return of capital,” and because the money coming back to you was already yours, it isn’t income in the year you receive it.¹

Instead of reporting the payment as income, you adjust your cost basis. Federal tax law starts your basis at what you paid for the stock, including commissions.² Each Box 3 dollar reduces that basis dollar for dollar.³ If you paid $10,000 for 1,000 shares and receive $500 in Box 3 distributions this year, your adjusted basis is now $9,500. Another $500 next year brings it to $9,000. Nothing hits your 1040 in either year.

If you can’t identify which specific shares the distribution relates to, reduce the basis of the earliest shares you purchased first.⁴ Basis cannot drop below zero; it floors there, and anything beyond that point changes the tax picture entirely.

Treat this tax-free treatment as deferral, not forgiveness. Every dollar that reduces your basis now adds a dollar to the gain you’ll recognize later, either when distributions eventually exceed basis or when you sell.

When You Do Report Box 3 Distributions

Once your adjusted basis reaches zero, any further nondividend distribution is taxable in the year you receive it. The law treats the excess as gain from the sale of stock.³

Whether the gain is short-term or long-term depends on your holding period in the stock. One year or less, it’s a short-term capital gain taxed at ordinary income rates. More than one year, it’s a long-term capital gain, taxed at 0%, 15%, or 20% depending on your taxable income.⁵

Higher-income filers also owe the 3.8% Net Investment Income Tax on the gain if modified adjusted gross income exceeds $200,000 for single filers or $250,000 for married couples filing jointly. Those thresholds are not indexed for inflation.⁶

How to Report the Taxable Excess

The taxable portion of a Box 3 distribution goes on Form 8949. Enter the payer’s name in column (a), the taxable amount as proceeds in column (d), and the gain in column (h). Use Part I if you’ve held the stock one year or less, Part II if longer. Check Box C or Box I for short-term transactions, Box F or Box L for long-term.⁷

Totals from Form 8949 carry to Schedule D: short-term gains in Part I, long-term gains in Part II.⁸ The net from Schedule D then goes to Line 7 of Form 1040, where it becomes part of your adjusted gross income.⁹

The IRS matches 1099-DIV data against your return. If you received Box 3 distributions after your basis hit zero and reported no gain, expect a notice. Reporting a gain while basis still exists works the other way: you’d be paying tax you don’t yet owe.

The Tax Bill That Shows Up at Sale

Even if your nondividend distributions never exhausted your basis while you held the stock, the deferred tax comes due when you sell. Buy shares for $10,000, receive $4,000 in cumulative Box 3 distributions over the years, and your adjusted basis at sale is $6,000. Sell for $10,000 and you owe tax on a $4,000 capital gain, despite the share price being exactly what you originally paid.

Form 1099-B from your broker may or may not reflect these adjustments correctly. Many brokers do adjust basis for return of capital on covered securities, but accuracy varies, and for shares bought before cost-basis reporting rules took effect you’re on your own. Verify the 1099-B basis against your own records every time.

S Corporation Shareholders Follow a Different Form Path

If your nondividend distribution comes from an S corporation, it doesn’t arrive on a 1099-DIV. It shows up on Schedule K-1 (Form 1120-S), box 16, code D. The basis-reduction mechanic is the same, and any excess over stock basis is still a capital gain reported through Form 8949 and Schedule D.¹⁰

S corporation shareholders who receive nondividend distributions must file Form 7203 with their return to track stock and debt basis year over year. Even when filing isn’t strictly required, the IRS recommends completing and keeping Form 7203 for consistent records.¹⁰ One distinction worth noting: S corporation distributions reduce your stock basis only, not any basis in loans you’ve made to the corporation.¹¹

Records You’ll Need Years From Now

Because the reporting event may be years or decades away, your records have to last. Keep every annual 1099-DIV or K-1, the original purchase confirmation, and a running log of your adjusted basis. A spreadsheet with columns for the year, the Box 3 amount, and the running basis is enough.

A stock bought in 2010 that pays small return-of-capital distributions each year might not hit zero basis until 2030. If you can’t document the purchase price or the cumulative reductions when the IRS asks, you’ll have trouble proving the basis was anything other than zero, which would make the entire sale proceeds taxable gain. Hold these records for the life of the investment and for at least three years after you sell, not the standard three-year window alone.

1
Internal Revenue Service. Topic No. 404, Dividends and Other Corporate Distributions
2
Office of the Law Revision Counsel. 26 USC 1012 – Basis of Property Cost
3
Office of the Law Revision Counsel. 26 USC 301 – Distributions of Property
4
Internal Revenue Service. Mutual Funds (Costs, Distributions, Etc.)
5
Internal Revenue Service. Topic No. 409, Capital Gains and Losses
6
Internal Revenue Service. Questions and Answers on the Net Investment Income Tax
7
Internal Revenue Service. Instructions for Form 8949
8
Internal Revenue Service. 2025 Schedule D (Form 1040)
9
Internal Revenue Service. 2024 Instructions for Schedule D Capital Gains and Losses
10
Internal Revenue Service. Instructions for Form 7203, S Corporation Shareholder Stock and Debt Basis Limitations
11
Internal Revenue Service. S Corporation Stock and Debt Basis