IRC 1367: S Corp Shareholder Basis Adjustments, Order, and Form 7203

Every year you own stock in an S corporation, IRC Section 1367 requires you to adjust your basis in that stock to reflect what the corporation earned, spent, distributed, and lost. These S corp shareholder basis adjustments are the shareholder’s job, not the corporation’s, and they decide two things on your personal return: whether a distribution comes out tax-free and how much of the corporation’s losses you can actually deduct.¹

Why Basis Matters Before You Touch the Math

Basis is your tax investment in the S corporation. It starts with what you paid for your stock, whether that was cash or the tax basis of property you contributed, and moves up and down each year based on the corporation’s activity.²

Two things ride on the number. Your deductible losses for the year cannot exceed your combined stock basis and debt basis; anything over that is suspended and carries forward indefinitely until you have enough basis to absorb it.³ And a distribution is a tax-free return of your investment only up to your stock basis; anything beyond that is treated as gain from a sale of your stock.⁴ Debt basis doesn’t count for the distribution test.⁵

Adjustments That Increase Stock Basis

Income items flow through and push basis up. That upward move is what prevents double taxation: you pay tax on the income now, and when the cash eventually comes out as a distribution, your higher basis lets it come out tax-free.

Separately stated income items from your Schedule K-1, such as capital gains, interest, and rental income.
Ordinary business income from the corporation’s operations.
Tax-exempt income, such as municipal bond interest or certain life insurance proceeds. Basis goes up here too, so those amounts stay tax-free when distributed.

Increases are allocated on a per-share, per-day basis, so partial-year ownership or a change in ownership percentage gets proportional treatment.⁶

Adjustments That Decrease Stock Basis

Certain outflows and losses pull basis back down, but it can never drop below zero.² Four categories reduce it:

Non-dividend distributions of cash or property, treated as a return of your investment.
Non-deductible expenses that aren’t capitalized either, such as fines, penalties, political contributions, and the non-deductible portion of business meals. Reducing basis here keeps you from recovering these costs tax-free later.
Losses and deductions, both separately stated items like capital losses and the corporation’s ordinary business loss.
Oil and gas depletion, limited to your proportionate share of the property’s adjusted basis.

Charitable Contributions of Appreciated Property

When the S corporation donates appreciated property, your basis reduction equals your pro rata share of the corporation’s adjusted basis in the property, not its fair market value. If the corporation gives away property it bought for $20,000 that is now worth $50,000, your basis drops by your share of the $20,000, while you claim a charitable deduction tied to the $50,000 value. That gap is a real benefit for shareholders.²

The Order You Have to Apply the Adjustments

When income, losses, and distributions all show up in the same year, the sequence is mandatory. Get it wrong and a tax-free distribution can turn taxable, or a loss can look bigger than it really is. The default four-step order:⁷

Increase basis for all income items, including tax-exempt income.
Decrease basis for non-dividend distributions. Doing this right after the income step maximizes the chance the distribution is a tax-free return of capital.
Decrease basis for non-deductible, non-capital expenses.
Decrease basis for deductible losses and deductions. If losses run past your remaining stock basis, the excess is suspended and carries forward.

The Elective Swap of Steps 3 and 4

Treasury Regulations let you flip Steps 3 and 4, taking deductible losses before non-deductible expenses.⁷ This maximizes your current-year loss deduction; the trade-off is that non-deductible expenses may then exceed basis and get suspended. The election applies only to the year it’s made.

Debt Basis: A Second Pool, With Strict Rules

Separate from your stock basis, you can have basis in money you have lent directly to the S corporation. Once stock basis hits zero, debt basis is what lets you keep deducting losses.²

The word “directly” carries all the weight. Only actual economic outlays from you to the corporation create debt basis. A personal guarantee of a bank loan to the corporation does not, however real your exposure feels.⁵ Loans made to the corporation by a related entity you control also don’t automatically give you debt basis; courts have rejected the argument that a wholly-owned company is just an “incorporated pocketbook” for the shareholder.

Open Account Debt vs. Written Notes

Documentation changes the tax outcome. Open account debt covers informal advances and repayments not backed by a separate written note, as long as the aggregate outstanding principal doesn’t exceed $25,000 at the end of the corporation’s tax year. All of it is treated as one indebtedness for basis purposes.⁸

If net principal is over $25,000 at year-end, the whole balance is permanently reclassified as if it were evidenced by a written instrument. That reclassification sticks even if the balance later drops back below $25,000.

Restoration Before Anything Else

When losses have reduced your debt basis, a later year’s net increase (positive adjustments over negative adjustments) has to restore debt basis first before any of it flows to stock basis.⁸ With multiple loans, the increase goes first to any loan being repaid that year, then proportionally across the rest based on how much each one’s basis was reduced.

When the Loan Is Repaid

If the corporation repays a loan whose basis was cut down by flow-through losses, the repayment triggers taxable gain to the extent it exceeds your remaining basis in the debt. Character depends on classification. Repayment of a written note produces capital gain (long-term if you held the note more than 12 months). Repayment of open account debt produces ordinary income. Documenting a shareholder loan properly at the outset can save real money on the back end.

When You Have to File Form 7203

Form 7203 gets attached to your personal return whenever you:

Deduct a share of the corporation’s losses, including suspended losses carried over from a prior year.
Receive a non-dividend distribution.
Dispose of S corporation stock, whether or not you recognized a gain.
Receive a loan repayment from the corporation.

Even in a year the form isn’t required, keeping a completed one in your records is what makes basis tracking survive from year to year.¹

Where Basis Alone Isn’t the Whole Story

A few situations sit outside the basic Section 1367 mechanics but often catch shareholders off guard.

Basis is only the first of several loss hurdles. A loss that clears basis can still be blocked by the at-risk rules (which don’t credit amounts protected by guarantees or most nonrecourse financing),⁹ the passive activity loss rules if you don’t materially participate, or the excess business loss limitation for tax years through 2028. Each stage has its own carryforward. If you’re passive in the business, that limitation is often what actually blocks your loss.

Inherited and gifted stock start differently. Inherited stock generally takes a basis equal to fair market value on the date of death, and none of the decedent’s suspended losses transfer to the heir.¹⁰¹¹³

Prior C corporation earnings change the distribution order. If the S corporation has accumulated earnings and profits from a former C corporation period, distributions come first out of the accumulated adjustments account (tax-free to the extent of stock basis), then as a taxable dividend from those accumulated E&P, then as a return of capital to the extent of remaining stock basis, with any excess treated as gain.⁴ With all shareholders’ consent, the corporation can elect to bypass the AAA and distribute from accumulated E&P first; the election is irrevocable for the year and is often used to clear out the E&P and eliminate the risk of a passive investment income tax or a terminated S election.

1
Internal Revenue Service. Instructions for Form 7203 – S Corporation Shareholder Stock and Debt Basis Limitations
2
Office of the Law Revision Counsel. 26 USC 1367 – Adjustments to Basis of Stock of Shareholders, Etc
3
Office of the Law Revision Counsel. 26 USC 1366 – Pass-Thru of Items to Shareholders
4
Office of the Law Revision Counsel. 26 USC 1368 – Distributions
5
Internal Revenue Service. S Corporation Stock and Debt Basis
6
Office of the Law Revision Counsel. 26 USC 1377 – Definitions and Special Rule
7
Internal Revenue Service. Stock Basis Ordering Rules
8
govinfo. 26 CFR 1.1367-2 – Adjustments of Basis of Indebtedness to Shareholder
9
Office of the Law Revision Counsel. 26 USC 465 – Deductions Limited to Amount at Risk
10
Office of the Law Revision Counsel. 26 USC 1014 – Basis of Property Acquired From a Decedent
11
Internal Revenue Service. Property Basis, Sale of Home, Etc