Subject-To vs. Seller Financing: What's Actually Different

August 12, 2026 · Creative real estate finance, explained with real deals

Generated (Gemini), via Wikimedia Commons

The real difference is what happens to the existing mortgage. In a subject-to deal, the seller's current loan stays exactly where it is, in the seller's name, and the buyer just starts making the payments on it. In seller financing, there's a brand new note between buyer and seller, and any old loan usually has to be paid off first because most sellers don't have a low enough balance (or enough equity) to finance around one. Everything else people argue about, credit, risk, paperwork, flows from that one fact.

The Underlying Loan Doesn't Disappear (Subject-To's Big Catch)

With subject-to, the seller's name stays on the mortgage even after they no longer own the house. That means the loan still shows up on their credit report, still affects their debt-to-income ratio if they try to buy another home, and is still technically callable by the lender if the due-on-sale clause gets triggered. In practice, lenders rarely call loans due just because the property changed hands quietly. Investors who do a lot of these deals will tell you it's an estimated 1-5% of deals where it becomes an actual issue, and that's a range based on experience, not a published statistic. But rare isn't the same as impossible, and the seller needs to understand they're carrying real exposure even after closing.

Seller financing has the opposite problem. Because the seller is originating a new loan, they take on the risk of being a lender: missed payments, the cost and time of foreclosure if the buyer stops paying, and the responsibility of tracking a note correctly for tax purposes. It's cleaner from a due-on-sale standpoint (there's often no old loan left to trigger), but it puts more direct risk on the seller's shoulders instead of the lender's.

People sometimes talk about these as interchangeable ways to "do creative financing," but they fit different situations. Subject-to makes sense when there's an assumable-in-spirit loan with a decent rate and the seller mainly wants out from under the payment and the property. Seller financing makes sense when the seller owns the property free and clear, or close to it, and wants to act as the bank to get a better price, faster sale, or steady income stream.

What to Actually Do

Start by looking at the existing loan, if there is one:

• If there's a loan with a low rate and real equity left, subject-to usually makes more sense, since paying it off to originate new financing would waste that rate.
• If the property is free and clear or nearly so, seller financing is usually cleaner, since there's no old lender in the picture to worry about.
• If there's a loan but the seller absolutely will not accept the due-on-sale risk, seller financing (with the old loan paid off at closing) may be the only workable path, even if it costs more upfront.

Whichever way you go, put it in writing properly. Subject-to deals still need a real purchase agreement, a deed transfer, and usually a memorandum recorded to show the buyer's interest. Seller financing needs a promissory note and a mortgage or deed of trust recorded against the property, not a handshake and a payment plan. Insurance matters in both cases: get the policy switched to reflect who actually owns the property, because a lapsed or mismatched policy can undo a deal fast if something goes wrong. And loop in a real estate attorney before signing anything, especially on the note terms and what happens on default. This is not a good place to save money by skipping legal review.

On Paper & Property we cover both structures deal by deal because the right one really does depend on the loan, the seller's goals, and how much risk each side is willing to carry.

Related: If you're leaning toward subject-to, read up on due-on-sale clauses and how experienced investors actually manage that risk day to day.