Wrap Around Mortgage Explained
You found a house you want to buy, or you're a seller sitting on a mortgage at 3.5% while the bank down the street is quoting 7%. Either way, someone mentioned a wraparound mortgage and now you're trying to figure out if it's a real tool or a trap. It's real. It's also one of the easier seller-financing structures to get wrong if nobody explains the mechanics.
A wraparound mortgage, or "wrap," is a loan the seller gives the buyer that wraps around the seller's existing mortgage. The seller keeps their original loan in place and keeps making payments on it. The buyer makes one payment to the seller, usually at a higher interest rate or higher balance than the underlying loan. The seller pockets the spread. No bank loan for the buyer. No payoff of the seller's existing mortgage at closing. Title still transfers, usually by deed, with the seller carrying the paper.
That's the whole idea in one paragraph. Now the part people skip past.
How a Wrap Actually Works, Step by Step
Say a seller owes $180,000 on a mortgage at 3.5%, with a payment of about $1,208 a month (principal and interest only). The house is worth $300,000.
A buyer can't get a great rate right now, or doesn't want to go through full underwriting, or is buying subject to some other constraint. Seller agrees to carry financing. They sign a wraparound note for $280,000 (the buyer put $20,000 down) at 6.5%, with a payment of roughly $1,770 a month.
Buyer sends $1,770 to the seller every month. Seller takes $1,208 of that and pays the original mortgage. Seller keeps the $562 difference. That spread is the seller's return for carrying the paper, on top of whatever they got at closing in cash down payment.
The buyer now owns the house, subject to a note held by the seller, and the seller's original mortgage is still sitting underneath the whole thing, unpaid off, just being serviced out of the new payment stream.
Why Anyone Would Do This
For the seller: it turns a low-rate mortgage into an income stream and lets them sell at full price to a buyer who couldn't otherwise qualify or close fast. They also usually get a better effective yield than the bank was giving them, because they're lending at a spread above their own rate.
For the buyer: it's a way to buy a house without qualifying for new institutional financing. That matters for buyers with inconsistent income, recent credit issues, self-employed borrowers whose tax returns don't show enough income, or anyone who needs to close in two weeks instead of forty five days.
Neither side needs a bank in the room. That's the appeal and it's also where the risk lives.
The Due-On-Sale Problem
Here's what most people searching this term don't know yet, or half know and are hoping isn't a big deal. It is a big deal.
Almost every conventional mortgage written since the 1980s contains a due-on-sale clause. It gives the lender the right to call the entire remaining balance due immediately if the property is sold or transferred without their approval. A wraparound sale is a transfer. The seller isn't paying off the original loan, they're just moving title while the loan stays in their name.
That means the seller's existing lender technically has the right to demand the full $180,000 balance the moment they find out. In practice, lenders don't monitor every county recorder's office looking for this. Many wraps run for years without the lender ever calling the loan. But "usually doesn't happen" is not the same as "can't happen," and if it does happen, the seller is on the hook to either pay it off or refinance fast, and the buyer's whole arrangement can collapse with them.
This is the single biggest thing people get wrong about wraps. They treat the due-on-sale clause like fine print instead of a real contingency both sides need to plan around before they sign anything.
Wraparound Mortgage vs. Other Seller Financing
People mix wraps up with two other structures, so it's worth separating them.
A straight seller carryback happens when the seller owns the property free and clear (no existing mortgage) and finances the whole purchase themselves. No wrap needed because there's nothing underneath to wrap around.
A subject-to deal is when the buyer takes title and takes over making payments directly on the seller's existing mortgage, in the seller's name, with no new note wrapping around it. There's one loan, one payment, no spread for the seller beyond whatever equity they got in cash or terms.
A wrap sits in between. There's the old loan underneath, and a new, larger note on top of it, with the seller as the middleman collecting the difference. It's more moving parts than a subject-to, and it only makes sense when the seller wants that monthly spread instead of just an exit.
What to Actually Check Before Doing a Wrap
If you're the buyer, get the original loan's payoff statement and confirm the balance, rate, and payment match what the seller is telling you. Confirm whether the note has a due-on-sale clause (almost all do) and understand that the underlying lender was never asked for permission. Get title insurance and use a real closing process, not a handshake and a notarized deed. Understand what happens to your equity if the seller stops forwarding payments to the underlying lender, because you're trusting them to actually make that payment every month with your money.
If you're the seller, understand that you remain personally liable on the original mortgage the entire time the wrap is outstanding. If the buyer stops paying you, you still owe your bank. Your credit and your asset are exposed until that underlying loan is gone, whether by refinance, sale, or payoff.
Use a licensed loan servicer to collect and disburse payments on wraps whenever possible. It creates a paper trail, keeps the seller from "forgetting" to make the underlying payment, and gives both sides proof of who paid what and when if there's ever a dispute.
The Honest Limitation
Wraps work best when the underlying loan is assumable-in-spirit, meaning nobody expects the lender to enforce due-on-sale anytime soon, rates have moved enough to make the spread worth the risk, and both parties actually trust each other or use a third-party servicer. If any of those three things is missing, a wrap is a structure that looks clever on paper and gets messy fast. It is not a way to avoid a hard conversation about whether the buyer can really afford the house, and it is not a substitute for real legal documents drafted for your state.
If you're looking at a property right now where a wrap, a subject-to, or a straight seller carryback might be the difference between a deal that closes and one that doesn't, that's exactly the kind of structure we build out deal by deal inside Deal Machine at readmoneydecoded.com/deal-machine. Bring the numbers on your specific house and we'll help you figure out which structure actually fits it.