A loan from an S corporation to a shareholder is not a taxable event, provided the transaction looks and behaves like a real loan. If it doesn’t, the IRS will recharacterize it — usually as a taxable distribution, sometimes as unreported wages — and the resulting bill reaches back to the year the money first left the corporate account. The rules governing S corporation loans to shareholders are a facts-and-circumstances test applied through the lens of what an independent lender would have required.
What Makes the Loan a Real Loan
The IRS has no single checklist, but its internal guidance identifies several elements that mirror arm’s-length lending.1Internal Revenue Service. Valid Shareholder Debt Owed by S Corporation Weak documentation and lax enforcement are the fastest paths to recharacterization.
- A written promissory note executed before any funds change hands, specifying the principal, the interest rate, and a fixed maturity date.
- Interest at or above the Applicable Federal Rate published monthly by the IRS.2Internal Revenue Service. Applicable Federal Rates
- A fixed repayment schedule that actually reduces principal over time. A note “payable on demand” with no payments ever made signals that neither side expected repayment.
- Collateral securing the loan, particularly for larger amounts.
- Actual enforcement when the shareholder misses a payment. If the corporation does nothing — no late notices, no acceleration — the IRS reads the silence as proof that the loan was a disguised distribution.1Internal Revenue Service. Valid Shareholder Debt Owed by S Corporation
No bright-line debt-to-equity ratio automatically disqualifies a loan.1Internal Revenue Service. Valid Shareholder Debt Owed by S Corporation But a loan that dwarfs the shareholder’s equity in the business raises the obvious question of whether repayment was ever realistic. Courts weigh all the factors together, and a loan that satisfies most of the elements above survives an audit far more reliably than one held together by a handshake.
Charging Enough Interest
The note must charge interest at least equal to the Applicable Federal Rate for a loan of its term. Charging less triggers Section 7872, which treats the arrangement as two separate transactions: the corporation is deemed to transfer the “foregone interest” to the shareholder as a distribution, and the shareholder is deemed to pay that same amount back as interest income.3Office of the Law Revision Counsel. 26 U.S. Code 7872 – Treatment of Loans With Below-Market Interest Rates The corporation then passes the interest income through to all shareholders pro rata on Schedule K-1, so every owner shares the tax burden created by one shareholder’s cheap loan.
The AFR changes monthly. As of early 2026, the short-term rate (loans of three years or less) sits around 3.56%, the mid-term rate (over three up to nine years) around 3.86%, and the long-term rate (over nine years) around 4.70% compounded annually.4Internal Revenue Service. Rev. Rul. 2026-3 These are floors. Charging more is fine.
There is one narrow escape. Section 7872 does not apply on any day the total outstanding loan balance between the corporation and the shareholder stays at or below $10,000.5Office of the Law Revision Counsel. 26 USC 7872 – Treatment of Loans With Below-Market Interest Rates That ceiling has never been indexed for inflation. Cross it by a dollar and the full balance falls under the imputed interest rules, not just the excess.
If the IRS Treats the Loan as a Distribution
When the IRS concludes the loan was never real debt, the entire principal is treated as a distribution dating back to when the money was originally advanced. What that distribution costs the shareholder depends on two things: the shareholder’s stock basis, and whether the S corporation carries accumulated earnings and profits from a prior C corporation life.
No Accumulated E&P
Most S corporations that have always been S corporations carry no accumulated E&P. In that case, the recharacterized distribution is a tax-free return of capital to the extent of the shareholder’s stock basis, with any excess taxed as capital gain. The gain is long-term if the stock has been held more than one year.6Internal Revenue Service. S Corporation Stock and Debt Basis A shareholder with $50,000 of stock basis who took a $100,000 “loan” would see the first $50,000 absorbed by basis (which drops to zero) and the remaining $50,000 taxed as capital gain.
With Accumulated E&P
Corporations that converted from C status, or that acquired a C corporation, may still carry accumulated E&P. For these companies, Section 1368 imposes a three-layer ordering rule.7Office of the Law Revision Counsel. 26 U.S. Code 1368 – Distributions The recharacterized amount is first applied against the accumulated adjustments account (AAA), which represents already-taxed S corporation earnings; this layer is treated like any distribution from a no-E&P company. Any amount exceeding the AAA is then taxed as an ordinary dividend to the extent of accumulated E&P. Anything still left reverts to the standard treatment of tax-free up to remaining basis, then capital gain.
The dividend layer is the unpleasant surprise for former C corporations. A shareholder who assumed the worst case was capital gain can find a slice of the recharacterized loan taxed as dividend income instead. And if modified adjusted gross income exceeds $250,000 (married filing jointly) or $200,000 (single), the 3.8% net investment income tax applies on top of the regular tax on both the capital gain and the dividend portions.8Internal Revenue Service. Net Investment Income Tax
If the IRS Treats the Loan as Wages
Recharacterization as a distribution is not the only risk. When a shareholder who actively works in the business takes “loans” while drawing little or no salary, the IRS can reclassify the money as wages subject to employment taxes. Payments to a corporate officer for services rendered are wages regardless of what the parties call them.9Internal Revenue Service. Wage Compensation for S Corporation Officers
Courts have upheld this reclassification where the loans were unsecured demand notes bearing no interest, made at the shareholder’s discretion, and repaid only by paper entries crediting the loan balance against income the corporation owed the shareholder.10Internal Revenue Service. S Corporation Employees, Shareholders and Corporate Officers If the shareholder is performing substantial services and the loan is the main way they extract value from the business, the IRS sees wages dressed as debt.
The cost of wage recharacterization is heavy. Social Security tax applies at 6.2% for both the corporation and the shareholder on wages up to $184,500 in 2026, and Medicare tax applies at 1.45% each with no cap.11Social Security Administration. Contribution and Benefit Base Shareholders over $200,000 also owe the additional 0.9% Medicare tax. The corporation owes its share of FICA and federal unemployment tax, and because none of it was withheld or deposited on time, back taxes, interest, and employment tax filing penalties pile on top.
Reasonable compensation has no statutory formula. The IRS and courts weigh the shareholder’s training and experience, time devoted to the business, what comparable companies pay for similar roles, and the corporation’s dividend history.9Internal Revenue Service. Wage Compensation for S Corporation Officers The protective step is paying a defensible salary before any loans are extended.
If the Loan Is Forgiven
Forgiving a shareholder loan triggers some of the harshest consequences short of fraud penalties. The forgiven amount is treated as a distribution at the time of cancellation, running through the same ordering rules above — basis first, then capital gain, with a dividend layer if accumulated E&P exists.6Internal Revenue Service. S Corporation Stock and Debt Basis If the loan was improperly structured from the start, forgiveness simply confirms what the IRS was already going to argue, with back taxes assessed from the date of the original advance plus interest running from each year the shareholder should have reported the income.
Section 108 offers limited relief when the shareholder is insolvent (liabilities exceeding assets) or in a Title 11 bankruptcy proceeding at the time of forgiveness. The bankruptcy exclusion takes precedence when it applies. The insolvency exclusion is capped at the amount by which the shareholder is insolvent, so a shareholder whose liabilities exceed assets by $40,000 and whose forgiven debt is $60,000 can exclude only $40,000.12Office of the Law Revision Counsel. 26 U.S. Code 108 – Income From Discharge of Indebtedness Both exclusions come with a tradeoff: the shareholder generally must reduce other tax attributes (net operating losses, basis in assets) by the excluded amount, shifting the tax burden to future years rather than erasing it.
Reporting and Recordkeeping
The S corporation reports loans to shareholders on Schedule L of Form 1120-S, line 7, for both the beginning and end of the tax year.13Internal Revenue Service. Form 1120-S U.S. Income Tax Return for an S Corporation Interest income on the loan flows through to all shareholders pro rata on Schedule K-1, and any imputed interest from below-AFR terms appears there too.14Internal Revenue Service. Shareholder’s Instructions for Schedule K-1 (Form 1120-S)
Beyond the return, keep a complete paper trail: the signed promissory note, a ledger of each disbursement and repayment, bank statements showing the money move in both directions, and documentation of any collateral. The IRS requires records to be kept as long as needed to prove the income or deductions on a return.15Internal Revenue Service. Recordkeeping For a shareholder loan, that means holding the note and payment records at least three years after the loan is fully repaid, and four years for employment tax records if wage exposure exists.
Penalties Stacked on Top of the Tax
When the IRS recharacterizes a loan, the additional tax is only the opening figure. The accuracy-related penalty under Section 6662 adds 20% of the underpayment attributable to negligence or a substantial understatement of income tax.16Office of the Law Revision Counsel. 26 U.S. Code 6662 – Imposition of Accuracy-Related Penalty on Underpayments A substantial understatement means tax owed exceeds tax reported by the greater of 10% or $5,000. Six-figure recharacterizations clear that threshold easily.
Interest runs on the underpayment from the original due date of each affected return, compounding daily. When the recharacterization reaches three or four years back — common when a loan was defective from the start — accumulated interest alone can be significant. If the loan is reclassified as wages, the corporation also faces penalties for failing to withhold and deposit employment taxes, running in parallel with everything on the income tax side.
The defense against all of this is the same set of steps that make the loan valid to begin with: a written note on arm’s-length terms signed before any money moves, consistent payments that actually clear the bank, and a corporation prepared to enforce the deal when the shareholder falls behind.