How to distinguish an owner contribution from a company loan

When you move personal money into your company, the first question to answer is simple: is this an owner contribution to equity, or a loan the company owes back to you? The answer affects how the transaction is recorded on the books, how it appears on the balance sheet, and how it interacts with shareholder basis. Getting it right starts with documentation, not with the bookkeeping software.

Start with the intent documented at the time of transfer

The clearest distinguishing factor is what both parties intended when the money moved. A contribution is money the owner puts in without an expectation of scheduled repayment. A loan is money the owner expects back on terms, ideally with interest, documented in writing.

Practical workflow: at the moment of the transfer, write and sign a short memo stating which classification applies. If it is a loan, attach a promissory note stating the principal amount, repayment schedule, and interest terms. If it is a contribution, note that in the memo as well. File this with the bank record of the transfer. A transfer without documentation is not automatically deductible or automatically a loan; the paperwork is what supports the classification later.

Use separate ledger accounts for each classification

Set up two distinct equity or liability accounts in your books: one for owner contributions and one for shareholder loans. Never post owner money to a catch-all account. When the transfer clears the business bank account, code it to the correct account the same day and attach the supporting memo or note to the transaction.

Your books should show gross income, deductions, and credits clearly, and supporting documents like canceled checks and deposit slips back up the entries you record. Keeping these documents organized by year and type is a standard recordkeeping practice described by the IRS: What kind of records should I keep.

Apply a short decision test before you post

Before recording any owner transfer, answer these questions in order:

1. Is there a signed promissory note with repayment terms? If yes, record it as a shareholder loan.
2. Is there a written memo stating the funds are a capital contribution with no repayment expected? If yes, record it as an owner contribution.
3. Is there neither? Do not post it until the documentation exists. Create the memo or note first, then record the transaction.

This sequence keeps the books consistent with the underlying documents. If the classification is ambiguous, resolve it before the transaction is posted, not months later during tax preparation.

Understand how the classification interacts with basis

For S corporation shareholders, both stock basis and debt basis matter. Stock basis generally increases with capital contributions and allocated income, and decreases with distributions and allocated losses and nondeductible items. Debt basis arises when a shareholder actually lends money to the corporation. The IRS walks through how stock and debt basis are computed and how losses and deductions are limited by basis in its S corporation guidance: S corporation stock and debt basis.

Two cautions: debt basis does not support distributions, and stock basis is not the same as the corporation's accumulated adjustments account. Track them separately. If you are an S corporation shareholder, income and losses flow through to your personal return, which is why basis tracking matters for what you can currently claim: S corporations.

Keep the records that support the classification

For each owner transfer, maintain a file containing the bank record of the transfer, the signed memo or promissory note, and the ledger entry showing which account was used. If a loan is later repaid or converted to a contribution, document that change with a new signed memo and post the reclassification between the two accounts. If you are preparing your books for lenders or bonding, clean classification of owner transactions also makes those records easier to present: see our guide on preparing your books for a bank loan or bonding application.

Review owner transfers quarterly so misclassifications are caught while the documentation is still easy to reconstruct. If you also run S corporation payroll, a year-end review of owner transactions pairs well with other December checklist items: what an S-corp owner should finish on payroll before December 31.

If you want help setting up owner contribution and loan accounts or reviewing past transfers, contact us through our contact page.

Further reading

For related context, read How to Use Your Balance Sheet Without Getting Overwhelmed.

For related context, read How to Tell If the Business Can Still Afford the Owner.