What it means
In a normal sale, the seller's mortgage is paid off at closing and the buyer takes out a fresh loan from a bank. In a wrap-around, the seller's original mortgage (called the underlying or senior loan) stays on the property.
The seller then lends the buyer the purchase price less any deposit, secured by a second legal claim on the property. The seller profits from the gap between two interest rates.
They charge the buyer a higher rate on the full wrap balance while paying a lower rate on the smaller underlying balance. That spread, plus the interest earned on the seller's own equity, is the reward for taking the credit risk of lending to the buyer.
For the buyer, the appeal is access and speed. A wrap-around can suit someone with a thin credit history, a self-employed buyer with irregular income, or a purchaser who needs to close quickly.
Terms are negotiated directly with the seller, so deposit sizes, rates and repayment schedules can be more flexible than a bank would allow. The risks are real on both sides, and they usually come down to the underlying loan.
Many mortgages contain a due-on-sale clause (a term allowing the original lender to demand full repayment if the property is transferred). If the original lender calls the loan, the seller must find the money quickly, and the buyer's home is at risk even if every payment to the seller was made on time.
Good practice is to use a lawyer, a neutral servicing company to collect and pass on payments, and a clear written agreement covering default, insurance and property taxes. The seller should also confirm that the original lender permits the arrangement.
Rules on seller financing and consumer protection differ widely between jurisdictions, so professional advice is essential before signing.
In practice
Real-world examples.
Example
A retiring dentist wants to sell her clinic building but the buyer, a young associate, cannot yet qualify for a full bank loan. She offers a wrap-around so he pays her monthly, and she continues paying her own lender. Both sides get what they want, provided her lender agrees to the arrangement.
Example
A small developer sells a warehouse unit to a local logistics firm that needs to move in within three weeks. A bank loan would take months, so the developer provides a wrap-around at a modestly higher rate than his own loan. The logistics firm gets speed, and the developer earns a steady interest margin.
Example
A couple selling their family home in a slow market advertise "owner financing available". A buyer with strong savings but inconsistent self-employed income takes the offer. The couple use a servicing company to collect payments, so records of every instalment are clear if a dispute arises later.
Formula
Calculation
Seller's annual interest spread = (Wrap balance x Wrap rate) - (Underlying balance x Underlying rate)
Worked example: a seller sells a house for $300,000. The buyer pays a $30,000 deposit, so the wrap-around loan is $270,000 at 7%. The seller's existing mortgage balance is $180,000 at 4%.
Interest received from the buyer = $270,000 x 7% = $18,900 per year.
Interest paid to the original lender = $180,000 x 4% = $7,200 per year.
Seller's annual interest spread = $18,900 - $7,200 = $11,700.
This is a first-year simplification that ignores principal repayments. The seller also receives the buyer's deposit and eventually recovers their equity, but the $11,700 shows why sellers find the structure attractive.Case study
Seen in the real world.
This is a fictional story. Larkspur Row Holdings is an invented small property company that owns a mixed-use building with an underlying mortgage of $400,000 at 3.5%. It agrees to sell the building to a bakery owner for $600,000, taking a $60,000 deposit and a wrap-around loan of $540,000 at 6.5%.
In the first year, Larkspur Row receives about $35,100 in interest ($540,000 x 6.5%) and pays about $14,000 in interest on its own loan ($400,000 x 3.5%). The difference of roughly $21,100 is a healthy margin that the company would not have earned from a straightforward cash sale.
Eighteen months later, the illustrative story takes a worrying turn. The original lender notices the change of ownership and invokes its due-on-sale clause. Because Larkspur Row had not sought consent in advance, it has to refinance in a hurry. The lesson is that the legal paperwork and lender approval matter as much as the interest margin.
Watch out
Common mistakes.
- Assuming the original lender does not need to know. Most mortgages include a due-on-sale clause, and ignoring it can lead to a demand for full repayment.
- Thinking the seller is out of the picture after the sale. The seller remains legally responsible to the original lender, so a buyer who stops paying becomes the seller's problem immediately.
- Treating the wrap-around as an informal handshake deal. Without a written agreement, a servicing arrangement and proper security registration, both sides are exposed if anything goes wrong.
Questions
People also ask.
Is a wrap-around mortgage legal?
In many places yes, but it is regulated differently from one jurisdiction to another, and the original loan terms matter. A lawyer should review the structure before anyone signs.
Who gets the tax and insurance responsibilities?
These are set out in the agreement, and it is normally the buyer who pays property taxes and insurance, with proof supplied to the seller. The seller needs this evidence because the property still secures their own loan.
Why would a buyer accept a higher rate than a bank charges?
The buyer may not qualify for conventional finance, or may value speed and flexibility. The extra interest is the price of access to a deal that would otherwise be unavailable.
From the founder's library
Take it further with the book.
Build your financial confidence beyond this definition. Shihan's full-length guide, Accounting Fundamentals, takes the same plain-English approach and turns it into a complete, practical playbook for non-finance managers, business owners and students - with chapter-end quiz answers and presentation slides included.
25% off with code MMHQ25, applied at checkout. Priced in USD - checkout may show the equivalent in your local currency.
View the book and save 25%Related