Every financing strategy you've read about so far — hard money, DSCR loans, HELOCs — assumes a bank is somewhere in the transaction. Seller financing removes the bank entirely. The seller becomes the lender, you make payments directly to them, and the deal closes on terms the two of you negotiate instead of terms an underwriter dictates.
It's not a fringe tactic. With investment property rates still running in the 6-7% range and DSCR pricing often landing in a similar band, sellers holding a mortgage from the low-rate years of 2020-2021 have real incentive to offer terms a bank can't match — and buyers have real incentive to ask.
Why It Matters
A bank underwrites the property and the borrower. A seller underwrites the relationship. That difference is the entire appeal of seller financing: no credit score cutoffs, no debt-to-income ratio, no seasoning requirements on a newly formed LLC, no appraisal that has to hit a number. If the seller trusts you and likes the terms, the deal can close in days instead of the four-to-six weeks a conventional or DSCR loan typically takes.
It also matters for deals that a bank simply won't touch — a property that needs too much work to qualify for standard financing, a seller who wants to avoid a large capital gains hit in one tax year and would rather spread the income over several years of note payments, or an investor whose portfolio is already leveraged past what a lender's DSCR threshold allows.
The tradeoff is real, though. You're negotiating with one counterparty instead of an institution with standardized paperwork, which means the terms — and the protections — are only as good as the contract you draft.
How It Actually Works
The seller takes back a note instead of receiving full cash at closing. You make a down payment, sign a promissory note for the balance, and the seller records a mortgage or deed of trust against the property just like a bank would. You now make monthly payments to the seller — principal and interest — instead of a lender.
Terms are entirely negotiable. Purchase price, down payment, interest rate, amortization schedule, and balloon due date are all points of negotiation, not fixed inputs. A common structure: a modest down payment, an interest rate somewhere between what a savings account pays and what a bank would charge, amortized over 20-30 years, with a balloon payment due in 3-7 years that forces a refinance once the property has seasoned or rates have moved.
"Subject-to" is a related but different structure. Instead of the seller carrying a new note, you take title to the property while the seller's existing mortgage stays in their name and in place — you simply make the payments on their existing loan. This is how an investor "strikes gold" on a property with an underlying 3-4% rate from the 2020-2021 era, but it comes with real risk: the mortgage isn't legally yours, most loans contain a due-on-sale clause the lender could theoretically enforce, and the arrangement depends on the seller's continued cooperation and credit standing.
A wraparound mortgage combines the two. The seller finances the difference between the purchase price and their existing loan balance, wrapping their old mortgage inside a new, larger note they hold with you. You make one payment to the seller; they keep paying their underlying loan out of it.
Structuring Terms That Protect You
Get the note and mortgage drafted and recorded properly. A promissory note is a legal debt instrument, and the mortgage or deed of trust that secures it needs to be recorded with the county just like any other lien. A handshake deal or an informal payment plan gives you none of the legal standing a recorded instrument does if the relationship sours.
Price the interest rate and balloon term together. A rate below market is only a good deal if the balloon date gives you enough runway to refinance or sell before it comes due. A 3-year balloon on a property that needs 18 months of stabilization before it will qualify for a DSCR refinance is a deal that can blow up entirely on timing, not economics.
Understand exactly what you're inheriting on a subject-to deal. Confirm the existing loan's balance, rate, and terms directly from a mortgage statement, not just what the seller tells you. Have a plan for what happens if the lender calls the due-on-sale clause, even if that outcome is uncommon in practice — "uncommon" is not the same as "won't happen to me."
Run the numbers exactly like you would for a bank-financed deal. Cash-on-cash return, monthly cash flow after the note payment, and your total cash to close don't change just because the lender is a person instead of an institution. A seller-financed deal with a rate 2 points below market is still a bad deal if the price was inflated to make up for it.
Common Mistakes
Accepting a below-market price story instead of verifying it. Sellers offering financing sometimes price the property above market, reasoning that favorable terms justify a premium. Comp the property independently — don't let attractive financing terms substitute for due diligence on the purchase price itself.
Skipping title work because there's no bank requiring it. A bank's requirement for title insurance and a clean title search exists because those things protect the buyer, not just the lender. Order title work on a seller-financed deal exactly as you would on a conventional purchase.
Not planning the exit before signing the note. Every seller-financed deal with a balloon payment has a hard deadline. Walking in without a credible refinance or sale plan — and a realistic sense of what the property needs to look like by then to qualify — turns a creative financing win into a forced sale at the worst possible time.
Treating "subject-to" and "seller financing" as the same thing. They carry different legal and risk profiles. Confirm which structure you're actually negotiating, and have an attorney review the paperwork either way — the cost of that review is small next to what an ambiguous contract can cost you later.
Letting payment logistics get informal. Set up automatic payments through a third-party loan servicer when possible. It creates a clean, independently verifiable payment record for both sides, which matters enormously if a dispute or a future refinance requires proof of on-time payment history.
How ProfitTrackr Helps
Seller-financed deals don't come with a standardized closing disclosure or amortization schedule the way a bank loan does, which means the burden of tracking the note terms accurately falls on you. Logging the purchase price, down payment, interest rate, and balloon date against the property the moment you go under contract keeps those numbers in the same place as every other figure driving your return — instead of buried in a PDF of the note you signed.
Because your cash-on-cash return and monthly cash flow depend on the note payment exactly the same way they'd depend on a bank's mortgage payment, running the deal through the same underwriting you'd apply to any financing option shows you honestly whether the "creative" structure is actually the better deal — or just the only one available.
Key Takeaways
- Seller financing replaces the bank with the seller as lender — you sign a promissory note and make payments directly to them, secured by a recorded mortgage or deed of trust
- It works best when a bank won't finance the deal, when speed matters more than rate, or when a seller wants to spread a capital gain over several years instead of taking it all at closing
- "Subject-to" deals let you take over payments on the seller's existing low-rate loan without a new note, but carry due-on-sale risk the seller and lender relationship doesn't fully eliminate
- Price the interest rate and any balloon due date together — a great rate with an unrealistic timeline to refinance can force a bad exit
- Independently verify the purchase price, order title work, and have an attorney review the note and mortgage regardless of how informal the relationship with the seller feels
Related articles: HELOCs for Real Estate Investors | DSCR Loans Explained | Hard Money Loans: When They Make Sense