Family Mortgage Loan: 3 Rules to Avoid Fraud

By The Chipkie Team, Personal Finance Editorial Team  ·  Last updated 25 August 2026

With mortgage rates where they are in 2026, a growing number of American families are asking the obvious question: why send hundreds of thousands of dollars in interest to a bank when Mom and Dad have the cash sitting in a Treasury fund? A properly structured family mortgage loan can work beautifully — the parent earns a better return than a CD, the child gets a lower rate, and the interest stays inside the family. But the informal version, the one done on a handshake and a Zelle transfer, fails on three separate fronts at the same time.

Those three failures are an IRS imputed-interest problem, a total absence of any enforceable claim on the house, and — if the money is really meant to cover a down payment behind a bank loan — an outright refusal by the lender. That last one is where otherwise honest families drift into mortgage fraud without ever intending to.

Key Takeaways

• A family mortgage must be documented as a written promissory note secured by a deed of trust (or mortgage) recorded with the county — otherwise the lending parent is an unsecured creditor standing behind everyone else.
• The note must charge at least the IRS Applicable Federal Rate for the month the loan closes. The AFR changes monthly, so check the current published rate before you sign.
• Under the Fannie Mae Selling Guide (B3-4.3-15) and FHA rules, an unsecured family loan is not an acceptable source of down payment funds. This is a source-of-funds prohibition, not a debt-to-income issue.
• Signing a gift letter while privately expecting repayment is mortgage fraud, even when the family means no harm.
• The 2026 gift tax annual exclusion is $19,000 per recipient per giver, and the lifetime gift and estate exemption is $15,000,000 per individual following the One Big Beautiful Bill Act.

What Does It Actually Mean for Parents to Act as the Mortgage Lender?

It means the parent replaces the bank entirely: they fund 100% of the purchase, the child signs a promissory note promising repayment, and that note is secured by a deed of trust or mortgage recorded against the property at the county recorder’s office. The parent becomes a lienholder with foreclosure rights, not just a hopeful relative.

That recording step is what separates a real intrafamily mortgage from a loan that only looks like one. Recording a deed of trust for a family loan does several things at once:

• Creates a perfected lien. If the child files bankruptcy, gets sued, or divorces, the parent’s claim attaches to the house rather than competing with credit card companies for scraps.
• Preserves the child’s mortgage interest deduction. The IRS generally allows a deduction for qualified residence interest only when the debt is secured by the home. An unsecured “loan from Dad” produces no deduction.
• Proves the money was a loan. Our experience across thousands of family agreements is that the gift-versus-loan fight almost always erupts years later, in probate or divorce court. A recorded lien ends that argument before it starts.
• Establishes priority. First position if the parent is the only lender; second position if the family money sits behind a bank loan.

On costs, the comparison is stark. Comparing a family mortgage versus a bank mortgage on closing costs, you skip origination points, underwriting fees, and lender-required appraisals. What you should still pay for: a properly drafted note, a recording fee (typically modest, set by your county), title insurance, and often a third-party servicer.

What Interest Rate Do You Have to Charge to Keep the IRS Out of It?

You must charge at least the Applicable Federal Rate (AFR) for the month the loan is made and for the note’s term. The Internal Revenue Service publishes AFRs monthly. Charge less, and the IRS treats the shortfall as imputed interest — phantom income to the lender and a deemed gift to the borrower.

Do not rely on a rate you read somewhere last year. The AFR is volatile and republished every single month, in short-term, mid-term and long-term tiers. A 30-year family note uses the long-term rate. Look up the current month’s figure before you sign, and lock it into the note in writing.

Where gift tax fits in. Some parents deliberately forgive a portion of the balance each year. That forgiveness is a gift. In 2026 you can give $19,000 per recipient per year without filing, and a married couple can give $38,000 to one child or $76,000 to a married couple. Exceed it and you file Form 709 — which usually means no tax is due, just a draw against the $15,000,000 lifetime exemption. Be careful, though: a pre-arranged plan to forgive every payment invites the IRS to recharacterize the whole thing as a disguised gift from day one. For a deeper walkthrough, see our guide on setting a fair interest rate on a family loan.

Why Can’t a Family Loan Fund the Down Payment on a Bank Mortgage?

Because unsecured borrowed money is a prohibited source of down payment funds. Under the Fannie Mae Selling Guide (B3-4.3-15) and FHA underwriting rules, an informal or unsecured personal loan — including one from parents — cannot be used for the down payment at all. The underwriter will not merely adjust the debt-to-income ratio; the loan will be refused.

This is the single most dangerous misunderstanding in family lending. It is routinely described online as “it might hurt your DTI.” That is wrong, and it leads families into the trap below.

The two legitimate paths:

1. A genuine gift. The parent signs a gift letter and the money is truly given, with no expectation of repayment ever. Documented with a donor bank statement and a transfer trail.
2. A properly secured loan. The borrowed funds are secured against an asset — commonly a note and deed of trust recorded in second position behind the bank’s mortgage, at a reasonable rate, with the payment counted in the borrower’s DTI. Some parents instead secure the loan against their own home via a HELOC and gift the proceeds.

What you cannot do is pick door one while privately meaning door two.

What Makes a Gift Letter Fraudulent?

A gift letter states the funds are a gift with no expectation of repayment. It becomes a false statement the moment the family actually expects the money back — even on a vague “whenever you can” basis. Signing it anyway is mortgage fraud under 18 U.S.C. § 1014, a federal felony carrying penalties up to 30 years and $1,000,000.

We see this constantly, and almost never maliciously. Parents want to help, the loan officer says “just call it a gift,” and everyone signs. If repayment is expected, say so and structure it as a secured second lien instead. The Consumer Financial Protection Bureau and HUD both treat source-of-funds misrepresentation as material.

How Do You Actually Service an Intrafamily Home Loan?

Servicing means collecting payments on a schedule, applying them correctly between principal and interest, tracking the amortized balance, and issuing year-end tax statements. Most families use a third-party loan servicer for a modest monthly fee, because self-servicing on a spreadsheet is where documentation quality collapses two years in.

1. Draft the promissory note — principal, AFR-compliant rate, term, amortization schedule, late fees, default terms, prepayment rights.
2. Draft and record the deed of trust or mortgage with the county recorder, using the correct instrument for your state (deed of trust states include CA, TX, VA; mortgage states include NY, FL, OH).
3. Buy a lender’s title insurance policy so the parent knows the lien position is clean.
4. Set up automatic ACH payments on a fixed date and never accept cash.
5. Issue Form 1098 and report the interest received as income on Schedule B.
6. Confirm homeowners insurance names the parent as mortgagee, and require proof of property tax payment annually.

What Happens if a Family Mortgage Borrower Stops Paying?

With a recorded lien, the parent has the same legal remedies as a bank: notice of default, then non-judicial or judicial foreclosure depending on state law. Without a recorded lien, the parent has only a breach-of-contract claim, subject to a state statute of limitations of roughly four to ten years on written contracts.

Most families never foreclose. But the existence of the remedy changes behavior, and it protects the parent’s other children when the estate is eventually divided. Our review of how the IRS treats family money transfers shows the gift-versus-loan characterization is decided almost entirely on documentation quality.

Does the Child Still Get the Mortgage Interest Deduction?

Yes — if the debt is secured by the residence and properly documented. The child deducts qualified residence interest on Schedule A subject to current limits; the parent reports the interest received as taxable income. Both sides need the lender’s Taxpayer Identification Number on their returns, which is why the note and the servicing records matter.

Should the Loan Be Structured as a Second Lien Behind a Bank?

Often, yes. When the bank funds most of the purchase and the family covers the gap, a recorded second-position deed of trust makes the family money an acceptable secured source rather than a prohibited unsecured one. Disclose it to the primary lender upfront — undisclosed secondary financing is itself a misrepresentation.

Where Should You Start?

Start with the paperwork, not the wire transfer. Decide honestly whether the money is a gift or a loan, get the current month’s AFR from the IRS, and put the terms in writing before a dollar moves. Then involve a local real estate attorney or title company to prepare and record the security instrument. A conversation with the child’s loan officer early — before any gift letter appears — prevents the most expensive mistake in this entire area.

If you are ready to get the terms down on paper properly, you can create a clear, written family loan agreement in minutes with Chipkie — with defined interest, a repayment schedule and records both sides can rely on. Lending to family should strengthen a relationship, not quietly expose everyone to the IRS, a foreclosure court, or a federal fraud statute. Document it like the real mortgage it is.

Disclaimer: The information provided in this article is for informational purposes only and should not be considered financial or legal advice. Laws and lending criteria vary significantly between states. We always recommend consulting with a qualified real estate attorney and financial advisor before entering into a property purchase or financial arrangement with another party.