Why It’s SUPER Important to Respect Related-Party Notes
and How to Keep Yours Audit-Proof, IRS-Ready, and Drama-Free
By Cody C. Heimerdinger, CPA
Let’s be real: when your entities “lend” money to each other, it can feel casual, like moving funds from one pocket to another. But to the IRS, those pockets belong to two separate people, and they expect each one to behave like a grown-up business partner.
What Is it?
A related party note (a promissory note between commonly owned entities or individuals) isn’t just paperwork. It’s your legal and tax lifeline. When structured and respected properly, it protects both sides, ensures deductibility of interest, supports balance sheet integrity, and shields against reclassification nightmares (like “constructive dividends” or “disguised distributions”).
Why Respecting the Terms Matters
- Avoid IRS Recharacterization:
If your note looks more like a handshake than a legitimate loan, the IRS can reclassify it as a capital contribution or distribution. That could mean losing interest deductions or triggering taxable income. - Preserve Deductions & Basis Integrity:
When you follow proper loan terms (interest, payments, documentation), your entities get the best of both worlds, a deductible expense for the borrower and valid income for the lender. - Maintain Financial Statement Credibility:
Auditors, lenders, and buyers love seeing properly papered intercompany notes. They demonstrate financial discipline and keep related-party transactions transparent and defensible. - Protect Future Exit Value:
Nothing tanks a due diligence faster than “we just move funds around.” A well-documented and respected promissory note shows your business runs like a pro, not like a hobby.
How the IRS Decides What’s “Real Debt”
When the IRS or a court reviews a related-party loan, they use what’s known as the “debt vs. equity test”, drawn from landmark cases like Fin Hay Realty Co., John Kelley Co., and Estate of Mixon.
These cases outline 11 key factors that help determine whether a note represents true debt or a disguised capital contribution. They look for things like:
- Is there a fixed maturity date?
- Is there a stated interest rate and payment schedule?
- Is there an actual history of repayment?
- Was the borrower adequately capitalized at the time of the loan?
- Do you have the right to enforce repayment, and would you actually do it?
In short: it’s not what you call it, it’s how you treat it. If your related-party loan walks, talks, and pays like a real loan, the IRS will usually respect it as one.
The 7 Essentials Every Promissory Note Needs
To pass IRS (and common-sense) scrutiny, every related-party note should include:
- Principal Amount: The exact amount loaned, no vague “around $100K.”
- Interest Rate: Must be at least the Applicable Federal Rate (AFR) to avoid imputed interest issues.
- Payment Terms: Schedule of repayments (monthly, quarterly, or on demand) and whether payments are interest-only, amortized, or balloon.
- Maturity Date: A clear end date, not “someday when we get around to it.”
- Security or Collateral (if applicable): Optional but adds credibility if large or recurring.
- Signatures: Both borrower and lender entities should sign via authorized representatives.
- Consistent Follow-Through: The most overlooked part, actually make the payments, and record interest income/expense annually.
Pro Tips from the Trenches
- Revisit AFR Rates: They change monthly, locking in a lower rate can be a smart move.
- Book It Right: Mirror the note on both sets of books, receivable/payable, not “owner draw.”
- Stay Current: Even one skipped payment can break the perception of debt.
- Keep It Formal: Use board minutes or resolutions to approve intercompany loans, especially for six-figure+ notes.
Respecting your related-party note isn’t just compliance, it’s strategy. You’re protecting your deductions, maintaining financial integrity, and sending a clear message: “We run our entities like real businesses, because they are.” And that’s exactly what the IRS wants to see.

