My Parents Are Selling Me Their House Below Market. How Does That Work?

The short answer: the discount can become your down payment, and no cash has to change hands. When a relative sells you a home for less than it is worth, the difference between the appraised value and the sale price is a gift of equity. On most programs it can serve as part or all of your down payment — documented with a gift letter, funded by nothing more than the price on the contract.

That is a genuinely powerful mechanism and most families have never heard of it. They discount the price, then separately worry about how the buyer will come up with a down payment, not realizing the discount already is one.

The trade is scrutiny. Buying from a relative is a non-arm's-length transaction, and lenders look harder at those — for reasons that are legitimate and worth understanding rather than resenting.

I'm Jeff Moran, a mortgage broker in Bluffton, South Carolina, originating since 1996. Family sales come up constantly, and they work well when they are structured properly at the start.

How a gift of equity actually works

The appraisal establishes value. The contract establishes price. The difference is the gift.

If a home appraises at $400,000 and your parents sell it to you for $340,000, there is $60,000 of equity being gifted. That amount can generally count toward your down payment — meaning you may need to bring little or nothing else, depending on the program and the loan amount.

Nobody wires anything. The gift exists in the gap between the two numbers.

Documentation is straightforward: a gift-of-equity letter naming the parties, the relationship, the amount, and stating that repayment is not expected. It is the same instrument used for an ordinary cash gift, adapted to a transaction rather than a transfer.

Why the appraisal matters more than usual

The gift is only as large as the appraisal supports.

If everyone assumes the home is worth $400,000 and it appraises at $360,000, the gift is $20,000 rather than $60,000 — and a down payment plan built on the larger number no longer works.

So on a family sale, the appraisal is not a formality. It is the number that determines the size of the gift, and it is worth not building a plan around an assumed value. How an appraisal determines value is the mechanism.

Non-arm's-length, and what the extra scrutiny is for

A transaction between related parties gets more attention. That is not suspicion of your family; it is a structural precaution, and the reasoning is straightforward once stated.

In an ordinary sale, two strangers negotiating establish that the price is real. When buyer and seller are related, that check is missing — so the lender substitutes closer scrutiny of the value, the terms and the flow of money.

What that means in practice:

• The appraisal gets read carefully, and a second opinion is sometimes ordered.
• The relationship is documented rather than assumed.
• Occupancy matters more, since related-party transactions on non-primary residences draw the most attention of all.
• Nothing should flow back. A side arrangement where you repay the discount privately would convert the gift into a loan, and that changes what the file is. If there is an expectation of repayment, it belongs in the file, not outside it.

None of that is difficult. It just needs doing properly rather than casually.

Where it gets more complicated

If the seller still owes a mortgage, the sale has to pay it off, which sets a floor under the price. A gift of equity only exists above that floor.

If the family member is not a close relative, program rules differ on who may give a gift of equity. Parents, grandparents and siblings are generally safe; more distant relationships need checking.

If the seller has lived elsewhere and been renting the home to you, that combination — related party, existing tenancy — draws particular attention, and there are program-specific rules about it worth asking after early.

If it is an estate rather than a living relative, that is a different situation with different mechanics.

The part your accountant owns

A gift of equity is a gift, and gifts have tax consequences for the giver in some circumstances. There are annual and lifetime thresholds, and the numbers change.

I am not going to print them, and I would not be the right person to interpret them if I did. What matters here is that the family should talk to a tax professional before the contract is signed, not afterward. It is usually straightforward, and it is much easier to structure than to unwind.

What I see go wrong

• Not knowing the mechanism exists. Families discount the price and separately panic about the down payment.
• Building the plan on an assumed value. The appraisal sets the gift size.
• A side agreement to repay the discount. That makes it a loan, and undisclosed it is a real problem.
• Not documenting the relationship and the gift properly at the start.
• Forgetting closing costs. The gift may cover the down payment and closing costs are separate money.
• Skipping the tax conversation until after the contract exists.

An illustration, so the shape is clear

Numbers below are invented to show the mechanism, not a quote.

Your parents own a home that appraises at $400,000, free and clear, and want you to have it. They agree to sell it to you for $340,000.

The $60,000 difference is a gift of equity. On many programs that is fifteen percent down without anybody moving a dollar — so the loan is $340,000, and your out-of-pocket requirement may be limited to closing costs and reserves.

Compare that with the version families usually imagine: sell at $400,000, then try to gift $60,000 in cash, which requires them to have $60,000 in cash and creates a transfer to document on both sides.

Same generosity, same outcome for the family, and one version requires liquid money that the other does not.

Now suppose the appraisal comes back at $355,000 instead. The gift is $15,000, and the plan needs revisiting — which is exactly why the appraisal is not a formality here.

What to do now

Talk to a lender before the contract is written. The price on that contract determines the size of the gift, and it is much easier to set correctly than to amend.

Run your scenario — no credit pull, no account, nobody calls you — and bring a realistic estimate of the home's value and whether the seller still owes anything on it. Those two facts shape the whole structure.

And have the family speak to a tax professional in the same week. It is normally simple, and it is the one part of this that genuinely belongs to somebody else.

Nothing here is a loan approval, a denial, or a commitment to lend, and none of it is tax or legal advice. Program guidelines differ and change, and what applies to a specific transaction is worth confirming rather than assuming.

Common questions

What is a gift of equity?

It is the difference between a home's appraised value and the lower price a related seller agrees to accept. That difference can generally be used as part or all of the buyer's down payment, documented with a gift-of-equity letter naming the parties, the relationship and the amount, and stating that repayment is not expected. No money changes hands to create it.

Can a gift of equity cover my entire down payment?

Often yes, depending on the program, the size of the gift and the occupancy. Because the gift exists in the gap between appraised value and sale price, a substantial discount can satisfy the down payment requirement entirely. Closing costs are separate money and still need funding, so they belong in the budget alongside it.

What is a non-arm's-length transaction?

A sale between related or otherwise connected parties, where the usual check of two strangers negotiating a price is missing. Lenders respond with closer scrutiny of the appraisal, the terms and the flow of funds. It is a structural precaution rather than suspicion of the family, and these transactions are entirely ordinary when documented properly.

Do I need an appraisal to buy my parents' house?

Yes, and it matters more than in an ordinary purchase because the appraisal determines the size of the gift of equity. A plan built on an assumed value can fall apart if the appraisal comes in lower, since the gift is only as large as the appraised value supports.

Can my parents sell me their house and I pay them back the difference?

Not privately, and not undisclosed. A gift of equity requires that repayment is not expected, which is exactly what the gift letter states. A side agreement to repay the discount would make it a loan rather than a gift, changing what the transaction is — and an undisclosed arrangement of that kind is a serious problem rather than a technicality.

Are there taxes on a gift of equity?

There can be consequences for the giver, subject to annual and lifetime thresholds that change over time. That is a question for a tax professional rather than a lender, and the useful timing is before the contract is signed rather than after. It is usually straightforward and much easier to structure than to unwind.