Form 7203 Instructions (Rev. 12-2022): S Corp Basis

Updated October 16, 2026. Quick answer: Form 7203 is the S Corporation Shareholder Stock and Debt Basis Limitations form, used to figure potential limits on a shareholder’s share of the corporation’s deductions, credits and other items. The instructions say it is filed by shareholders who claim an aggregate loss, receive a non-dividend distribution, dispose of stock or receive a loan repayment. It has three parts: stock basis, debt basis, and allowable loss and deduction items.

More IRS forms and schedules for individual filers, read line by line: Form 3800 instructions.

S corporation return (Form 1120-S) for 2025, read line by line: Form 1120-S Schedule K lines 17 and 18, Form 1120-S Schedule L and Form 1120-S Schedule M-1.

Partnership return (Form 1065) for 2025, read line by line: Form 1065 Schedule K lines 1 to 4 and Form 1065 Schedule M-2.

What Form 7203 is for

The form is titled “S Corporation Shareholder Stock and Debt Basis Limitations” and carries the line “Attach to your tax return.” The instructions state its purpose: “Use Form 7203 to figure potential limitations of your share of the S corporation’s deductions, credits, and other items that can be deducted on your return.”

It replaced a worksheet. The instructions say it was “developed to replace the 3-part Worksheet for Figuring a Shareholder’s Stock and Debt Basis” that used to sit in the Schedule K-1 shareholder instructions. The corporation does not do this math for the shareholder: the Form 1120-S instructions tell the corporation to report ordinary income or loss “without reference to the shareholder’s:” “Basis in the stock of the corporation and in any indebtedness of the corporation to the shareholders (section 1366(d)),” and add that “These limitations, if applicable, are determined at the shareholder level.” Whether the S election saves money at all is worked on the S corporation election calculator page.

Dollar figures at a glance

The dollar figures that appear in the instructions for debt basis and for the related Schedule K-1 penalty are collected here.

Who must file

The instructions list four situations: “Form 7203 is filed by S corporation shareholders who:”

There is also a recommendation for years when none of those applies: “It may be beneficial for shareholders to complete and retain Form 7203 even for years it is not required to be filed, as this will ensure their bases are consistently maintained year after year.”

A married couple completes two forms when both are on the Schedule K-1: “If you are married filing jointly and you received a Schedule K-1 (Form 1120-S) for you and your spouse, complete a separate Form 7203 for each spouse.”

The order of the loss limits

Basis is the first gate, not the only one. The instructions state: “These limitations and the order in which you must apply them are as follows:” “the basis limitations (Form 7203), the at-risk limitations (Form 6198), the passive activity loss limitations (Form 8582),” “and the excess business loss limitations (Form 461).”

The passive activity step is covered on the Form 8582 page. On the corporation side, the Form 1120-S instructions explain the at-risk rule: “In general, section 465 limits the amount of deductible net losses shareholders can claim from certain activities.”

How stock basis is adjusted, in order

The instructions set the baseline: “Generally, the deduction for your share of aggregate losses and deductions reported on Schedule K-1 (Form 1120-S) is limited to the basis of your stock and loans from you to the corporation.” “The basis of your stock (generally, its cost) is adjusted annually as follows and, except as noted, in the order listed.”

A shareholder who cares about the order has one election. “You may elect to decrease your basis under (4) prior to decreasing your basis under (3).” “To make the election, attach a statement to your timely filed original or amended return that states you agree to the carryover rule of Regulations section 1.1367-1(g) and the name of the S corporation to which the rule applies.” “Once made, the election applies to the year for which it is made and all future tax years for that S corporation, unless the IRS agrees to revoke your election.”

Part I: stock basis, contributions, income and distributions

The three parts of the form:

Line 1 starts from last year. “Unless this is your initial year owning stock in the S corporation, this amount should be the same as your ending stock basis from the prior tax year.” “Stock basis can’t be less than zero.” “Stock basis and debt basis must be figured separately.”

Line 3 takes income, and only positive numbers go there: “Enter only positive amounts from Schedule K-1 (Form 1120-S) on line 3. Negative amounts (decreases to stock basis) are entered in Part III.”

Distributions larger than stock basis

Line 6 is for distributions. “Enter the distributions reported on Schedule K-1 (Form 1120-S), box 16, code D.” “Don’t include any Form 1099-DIV distributions (dividend distributions from the accumulated earnings and profits while a C corporation) on this line.”

The excess has a stated treatment: “If the amount of the distribution is more than the stock basis before distributions, report the excess amount as a capital gain on Form 8949, Sales and Other Dispositions of Capital Assets, and Schedule D.” “Don’t increase your stock basis for the amount of capital gain reported for the excess.” Those forms are explained on the Form 8949 page and the Schedule D page.

Part II: debt basis in loans to the corporation

Stock is one layer and loans are the other. “The basis of your loans to the corporation is generally the balance the corporation owes you, adjusted for any reductions and restorations of loan basis.”

Two rules catch people. “Distributions don’t reduce loan basis, and” “Loans that a shareholder guarantees or co-signs aren’t part of a shareholder’s loan basis except to the extent the shareholder makes a payment on the loan guaranteed or co-signed.”

Each note gets its own column. “You must account for each formal note (notes with a written instrument) made to your S corporation by entering it separately in its own column.” “If an open account debt has a year-end balance of more than $25,000, it will be classified as a formal note at the beginning of the next tax year and must be separately tracked.”

Repayment has a character rule. “Debt evidenced by a formal note will result in capital gain, and should be reported on Form 8949 and Schedule D.” “Any open account debt (including debt referenced in Regulations section 1.1367-2(a)(2)(ii)) will result in ordinary gain and should be reported on Form 4797, Sales of Business Property.” “Gain recognized on loan repayment doesn’t increase basis.” The business property form is on the Form 4797 page.

Part III: allowable losses and suspended carryforwards

The ceiling is stated plainly: “The corporate losses and other deduction items are limited to the sum of your stock and debt basis.” “When stock and debt basis is insufficient, and there is more than one type of loss or deduction item that reduces basis, the amounts allowed as a loss or deduction are allocated on a pro rata basis.”

What is not allowed this year is not lost. “Loss and deductions in excess of basis are suspended and carried forward indefinitely and the character of the loss and deduction items is retained.” “Any losses and deductions not allowed this year because of the basis limit can be carried forward indefinitely and deducted in a later year subject to the basis limit for that year.”

Owners who pair an S corporation with a solo plan can read about contribution limits on the solo 401(k) and SEP IRA page. The edition read for this page is Form 7203 (Rev. December 2022) and the Instructions for Form 7203 (Rev. December 2022), together with the 2025 Instructions for Form 1120-S, which are the revisions irs.gov served when they were read on 2026-10-16. Check the revision printed on the form you are filing, because a later revision can change the checkboxes, the line layout and the filing rules.

Common mistakes

• Counting a guaranteed loan as debt basis. The instructions say loans a shareholder guarantees or co-signs aren’t part of loan basis except to the extent the shareholder makes a payment on the loan guaranteed or co-signed, and distributions don’t reduce loan basis.
• Expecting the corporation to apply the basis limit on the Schedule K-1. The Form 1120-S instructions report the income or loss without reference to the shareholder’s basis, and say these limitations are determined at the shareholder level.
• Treating a distribution above stock basis as a basis item. The instructions say to report the excess as a capital gain and not to increase stock basis for that gain.

Related: S corporation election calculator, Form 8582, Form 8949, Schedule D, and Form 4797.

Sources

• Form 7203 (Rev. December 2022), S Corporation Shareholder Stock and Debt Basis Limitations: https://www.irs.gov/pub/irs-pdf/f7203.pdf
• Instructions for Form 7203: https://www.irs.gov/pub/irs-pdf/i7203.pdf
• Instructions for Form 1120-S (2025): https://www.irs.gov/pub/irs-pdf/i1120s.pdf

Read from the IRS documents linked above on October 16, 2026. General information, not tax advice. Your own facts decide the outcome, and a preparer, the account provider or the IRS is the right place to confirm anything consequential.