Form 7203: S Corporation Stock Basis

Form 7203 is titled S Corporation Shareholder Stock and Debt Basis Limitations. It helps an S corporation shareholder track two amounts: stock basis and debt basis. Basis limits how much loss a shareholder can deduct. The copy on IRS.gov is the December 2022 revision. IRS: Form 7203

Who must file

The instructions say Form 7203 is filed by S corporation shareholders who:

claim a deduction for their share of an aggregate loss, including a loss not allowed last year because of basis limits;
receive a non-dividend distribution from the S corporation;
dispose of S corporation stock, whether or not a gain is recognized; or
receive a loan repayment from the S corporation.

The instructions also say it can help to keep Form 7203 even in years you are not required to file it. That keeps your basis consistent from year to year. IRS: Instructions for Form 7203 (Rev. December 2022)

Part I: stock basis

Line 1 is your stock basis at the start of the corporation's tax year. Line 2 adds capital contributions or new stock. Lines 3a through 3m add items that increase basis, such as ordinary business income, interest, dividends, and capital gains. Line 4 totals them. IRS: Form 7203 (Rev. December 2022)

Line 6 is distributions, other than dividend distributions. If line 6 is larger than line 5, the form says to report the difference as a capital gain on Form 8949 and Schedule D. IRS: Form 7203 (Rev. December 2022)

Lines 8a through 8c reduce basis for nondeductible expenses, oil and gas depletion, and certain business credits. Line 11 brings in the allowable loss from Part III. Line 15 is your ending stock basis. IRS: Form 7203 (Rev. December 2022)

Part II: debt basis

Part II tracks money a shareholder lent to the S corporation. Section A lists up to three debts. For each one, it asks for the balance at the start of the year, new loans, repayments, and the balance at the end. IRS: Form 7203 (Rev. December 2022)

The instructions say loans a shareholder co-signs or otherwise backs generally are not part of the shareholder's loan basis. IRS: Instructions for Form 7203 (Rev. December 2022)

Part III: allowable loss

Part III works out the loss you may deduct. Line 47 carries to line 11 of Part I. Each result on the form stops at zero. If a result is zero or less, the form says to enter zero. IRS: Form 7203 (Rev. December 2022)

Steps to follow

Each year, get your Schedule K-1 (Form 1120-S) from the corporation.
Start with last year's ending stock basis.
Add the items that increase basis. Subtract the items that decrease it.
Track loans to and from the corporation in Part II.
Complete Part III for any loss, and carry the result to your return.

Records to keep

Keep each year's Schedule K-1 from the corporation, your prior-year Form 7203, and records of any loans you made to the corporation. Most lines on the form are built from these items. The instructions also suggest keeping the form in years when it is not required. IRS: Instructions for Form 7203 (Rev. December 2022)

Common mix-ups

Stock basis and debt basis are separate. Part I tracks stock. Part II tracks loans.
Basis cannot fall below zero. A loss larger than your basis is limited on Part III.
A distribution larger than your basis is not a loss. The form reports the excess as a capital gain on Form 8949 and Schedule D.

The instructions treat a loan the shareholder co-signs or backs differently from a loan the shareholder makes directly. Read the Part II caution before you add any such amount to debt basis. IRS: Instructions for Form 7203 (Rev. December 2022)

Read the capital loss limit for losses on sales of stock. Read passive activity losses for another limit on deducting losses. Read Form 4797 for sales of business property.

General information, not advice for your situation.

Sources: Sources: IRS, Form 7203 (Rev. December 2022), S Corporation Shareholder Stock and Debt Basis Limitations (https://www.irs.gov/pub/irs-pdf/f7203.pdf); IRS, Instructions for Form 7203 (Rev. December 2022) (https://www.irs.gov/pub/irs-pdf/i7203.pdf); IRS, About Form 7203 (https://www.irs.gov/forms-pubs/about-form-7203) This is general information, not advice about your specific return.

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