IRS Family Loan Rules: What You Need to Know Before Lending Money

Family loans can be a helpful financial tool, offering support without the need for formal banking processes. However, these transactions are subject to IRS scrutiny, and the tax implications and legal requirements surrounding them are often misunderstood. Properly navigating these rules is essential to avoid unintended tax consequences or penalties. Understanding key aspects like interest rates, gift taxes, documentation, and loan forgiveness is crucial for compliance with IRS regulations.

Interest Rate and Imputed Interest

The interest rate applied to family loans is a key consideration. The IRS treats loans that charge less than the Applicable Federal Rate (AFR) as “below‑market loans,” and may impute interest under Internal Revenue Code §7872; AFRs are published monthly and vary by loan term. 1Internal Revenue Service. Publication 550: Below‑Market Loans and Applicable Federal Rates

If the interest charged is below the AFR, the IRS may apply imputed interest, assuming income the lender should have received. This imputed interest is taxable and must be reported on the lender’s tax return, potentially increasing their tax liability. For example, on a $50,000 loan with no interest, and a hypothetical AFR of 4.5%, about $2,250 could be treated as annual interest income. This can also impact financial statements for lenders who are businesses, influencing metrics like the debt-to-equity ratio or interest coverage ratio.

Gift Tax Implications

Family loans can trigger gift tax implications if the interest charged falls below the AFR. The IRS may treat the difference between the loan’s actual interest rate and the AFR as a gift. For 2025, the annual gift tax exclusion is $19,000 per recipient. 2Internal Revenue Service. Internal Revenue Bulletin 2024‑45: 2025 Annual Exclusion for Gifts

For instance, if a parent lends $100,000 to a child at 1% interest when the AFR is higher, the difference could be considered a gift. If this amount exceeds the annual exclusion, the lender may need to file a gift tax return using IRS Form 709. 3Internal Revenue Service. Instructions for Form 709, United States Gift (and Generation‑Skipping Transfer) Tax Return Cumulative gifts exceeding the lifetime exemption (basic exclusion amount) for 2025 could be subject to a gift tax rate of up to 40%, which has significant implications for estate planning.

Written Loan Agreements

A written loan agreement is critical for establishing the legitimacy of family loans. Such an agreement should clearly outline terms like the principal amount, repayment schedule, interest rate, and any collateral. It should also address contingency plans for default or early repayment.

A formal agreement offers legal protection and minimizes the risk of misunderstandings or disputes. It also aids in tracking payments and interest, ensuring both parties adhere to the agreed terms. Proper documentation is especially important for tax reporting, as informal or undocumented loans may draw closer IRS scrutiny.

Reporting and Documentation

Accurate reporting and thorough documentation are essential to comply with IRS regulations. Lenders must report any interest income from family loans on their tax returns and maintain detailed records such as payment receipts, bank statements, and correspondence related to the loan. These records serve as evidence in case of an audit.

For business lenders, family loans must be integrated into financial statements in accordance with Generally Accepted Accounting Principles (GAAP) or International Financial Reporting Standards (IFRS). Recognizing interest income and adjusting financial metrics ensures accurate reporting, which can influence creditworthiness and investment decisions.

Loan Forgiveness Status

Loan forgiveness in family lending creates additional tax complexities. When a family loan is forgiven, the IRS generally treats the forgiven amount as a gift. 4Internal Revenue Service. Frequently Asked Questions on Gift Taxes

Forgiveness should be formally documented through a written statement signed by both parties to ensure clarity and compliance. In some cases, the forgiven amount might be considered taxable income to the borrower, depending on their financial situation and the loan terms. Both parties should consult tax professionals to evaluate potential liabilities and reporting requirements.