S Corp Distributions in Excess of Basis: Capital Gains and NIIT

An S corporation distribution that exceeds your stock basis is taxed as a capital gain, not as a tax-free return of your investment. S corp distributions in excess of basis are treated as gain from the sale or exchange of property under Section 1368, which means the character depends on how long you’ve held your shares: long-term capital gain at 0%, 15%, or 20% if you’ve held for more than a year, and short-term gain at ordinary rates if you’ve held for a year or less.¹ Passive shareholders may owe an additional 3.8% net investment income tax on top of that.

Whether a given distribution actually crosses into excess territory depends on three things working together: your personal stock basis, the corporation’s Accumulated Adjustments Account, and the ordering rules that classify each dollar you receive. The corporation does not do this math for you. The K-1 reports the total amount distributed and leaves the tax consequences on your side of the ledger.

Figuring Out Whether You Have an Excess Distribution

Your stock basis is your running tax investment in the S corporation. It starts with what you paid for or contributed to get your shares, and it moves every year with corporate activity reported to you on Schedule K-1. Keeping this number accurate is your responsibility, and errors here are the single most common reason shareholders accidentally trigger taxable gains on distributions they thought were tax-free.²

Each year, your stock basis increases by your share of the corporation’s income, including ordinary business income and separately stated items like interest or capital gains. Tax-exempt income the corporation earns, such as municipal bond interest, also increases your basis even though you never pay tax on it.³

Your basis decreases by distributions that are not taxable dividends, by your share of losses and deductions, and by nondeductible corporate expenses like penalties or fines. Basis can never go below zero. If losses would push it negative, the excess is suspended and carried forward to a future year with enough basis to absorb them.³

The Order of Annual Adjustments

The sequence of adjustments matters more than most shareholders realize. Each year, basis moves in this order:

Step 1: Increase for all income items and excess depletion.
Step 2: Decrease for nondividend distributions.
Step 3: Decrease for nondeductible, noncapital expenses.
Step 4: Decrease for losses and deductions.

Because income is added before distributions are subtracted, a profitable year can create enough room for a distribution to come out tax-free even if basis was near zero on January 1. And because losses come last, distributions effectively get priority over loss deductions when basis is tight.⁴

Debt Basis Does Not Help With Distributions

Debt basis is your basis in loans you personally made to the S corporation. It is entirely separate from stock basis and only exists when you have loaned your own money directly to the company. Third-party loans the corporation takes out, even ones you personally guarantee, do not create debt basis for you.

Debt basis matters for loss deductions. When your stock basis hits zero, you can still deduct your share of losses up to your remaining debt basis.¹ Distributions, however, do not reduce debt basis and are not sheltered by it. Once your stock basis is exhausted, any further distribution triggers a capital gain no matter how much debt basis you still have.

How Distributions Get Classified

How a distribution is taxed depends on whether the S corporation has accumulated earnings and profits from years when it operated as a C corporation. Most S corporations that were never C corporations have no AE&P, which simplifies the analysis considerably.

Corporations With No C Corporation History

When there is no AE&P, every distribution follows a two-step process. The distribution is tax-free up to your stock basis, reducing that basis dollar for dollar. Anything beyond your stock basis is taxed as a capital gain, as if you had sold a portion of your stock.⁵

Corporations With Accumulated Earnings and Profits

When the corporation carries AE&P from its C corporation history, the rules create a four-tier waterfall. The first tier draws against the Accumulated Adjustments Account, a corporate-level account tracked on Schedule M-2 of Form 1120-S that represents cumulative undistributed income already taxed to shareholders during S election years.⁶

Tier 1 (AAA, tax-free): The portion of the distribution not exceeding the AAA is tax-free and reduces both the AAA and your stock basis.
Tier 2 (AE&P, taxable dividend): Once the AAA is used up, the next portion is a taxable dividend to the extent AE&P remains. This dividend does not reduce your stock basis.
Tier 3 (remaining stock basis, tax-free): After AE&P is exhausted, further distribution amounts reduce whatever stock basis you have left, tax-free.
Tier 4 (capital gain): Anything left after your stock basis reaches zero is taxed as a capital gain.

The dividend portion in Tier 2 is C corporation earnings that were taxed at the corporate level but never taxed to shareholders. Those dollars are taxable at your qualified dividend rate when they finally come out.⁵

The AAA belongs to the corporation, not to individual shareholders. If a shareholder sells stock, the AAA stays with the company. The practical result is a split role: the AAA and AE&P determine the character of the distribution at the corporate level, but your personal stock basis determines whether and when it becomes a taxable gain to you.

How the Excess Is Taxed

Once your stock basis reaches zero, every additional dollar distributed to you is treated as gain from the sale or exchange of property, even though you still own all your shares.⁵

The character of that gain depends on your holding period. More than one year gets long-term capital gain treatment at 0%, 15%, or 20% depending on taxable income. For 2026, the 20% rate kicks in at $545,500 of taxable income for single filers and $613,700 for married couples filing jointly. If you’ve held the stock for one year or less, the excess is a short-term capital gain taxed at ordinary rates.¹

The 3.8% Net Investment Income Tax

Capital gains from excess distributions may also be subject to the 3.8% net investment income tax when modified adjusted gross income exceeds $200,000 for single filers, $250,000 for married filing jointly, or $125,000 for married filing separately. These thresholds are not indexed for inflation, so more taxpayers cross them each year.⁷

NIIT generally applies when the shareholder is a passive owner. If you materially participate in the corporation’s business, the gain from an excess distribution may be excluded from net investment income, though the analysis is fact-specific.⁸

How to Report It

The corporation reports your total distributions for the year on Schedule K-1 (Form 1120-S), Box 16, Code D. That figure lumps tax-free and taxable portions together. The corporation does not split them out or calculate your basis.⁹

You determine how much of the distribution exceeds your basis and report that amount as a capital gain. The gain goes on Form 8949, with the S corporation as the payer, and the totals flow to Schedule D of Form 1040.¹⁰

Track your basis calculations on Form 7203, S Corporation Shareholder Stock and Debt Basis Limitations. This form must be filed with your return if you received a nondividend distribution, claimed a loss from the corporation, disposed of stock, or received a loan repayment from the corporation. Even when it isn’t technically required, completing Form 7203 and keeping it with your records provides consistency and documentation if the IRS questions your numbers later.²

Why Distributions Beat Suspended Losses to the Basis

When your share of losses exceeds your combined stock and debt basis, the excess is suspended rather than lost. Suspended losses carry forward indefinitely and are treated as if the corporation incurred them again the following year, giving you another chance to deduct them when basis recovers.¹¹

The ordering rules create a trap. New income increases basis in Step 1. A current-year distribution reduces basis in Step 2. Suspended losses are lumped in with current-year losses and applied last, in Step 4. Distributions therefore take priority over suspended losses. If the corporation earns $50,000, distributes $40,000, and you carry $30,000 of suspended losses, basis goes up by $50,000, down by $40,000 for the distribution, and down by only $10,000 for losses, leaving $20,000 of losses still suspended.⁴

If you sell or otherwise dispose of all your stock, any remaining suspended losses are permanently forfeited. They do not transfer to the buyer and cannot be used on your future returns. The only exception is a transfer to a spouse or as part of a divorce, where the suspended losses follow the stock to the transferee.¹

Two Related Surprises Worth Knowing About

Excess distributions are not the only way an S corporation can hand you an unexpected tax bill. If you loaned money to the company and losses reduced your debt basis, part or all of a loan repayment is taxable. With a written promissory note, the taxable portion is capital gain, long-term or short-term depending on how long you held the note. Without a written note (an open account balance), the taxable portion is ordinary income, which is typically a worse result. Open account loans that exceed $25,000 at year-end are automatically reclassified as formal notes starting the next year.²

State treatment is the other place to look before assuming you’re done. Not all states automatically recognize the federal S election. A handful either do not recognize S corporation status at all or require a separate state filing to opt in. In those states, the corporation may owe an entity-level tax, and distributions may be characterized differently for state income tax purposes. If your corporation operates across state lines or has shareholders in several states, the state result on an excess distribution can diverge from the federal one described above.

1
Internal Revenue Service. S Corporation Stock and Debt Basis
2
Internal Revenue Service. Instructions for Form 7203
3
Office of the Law Revision Counsel. 26 USC 1367 – Adjustments to Basis of Stock of Shareholders, Etc.
4
Internal Revenue Service. Stock Basis Ordering Rules – LB&I Practice Unit
5
Office of the Law Revision Counsel. 26 USC 1368 – Distributions
6
Internal Revenue Service. Instructions for Form 1120-S
7
Internal Revenue Service. Topic No. 559, Net Investment Income Tax
8
Internal Revenue Service. Questions and Answers on the Net Investment Income Tax
9
Internal Revenue Service. Shareholder’s Instructions for Schedule K-1 (Form 1120-S)
10
Internal Revenue Service. Instructions for Form 8949
11
Office of the Law Revision Counsel. 26 USC 1366 – Pass-thru of Items to Shareholders