A seller-financed mortgage is a home sale in which the owner, rather than a bank, lends the buyer the money to purchase the property. The buyer signs a promissory note promising to repay the debt and a mortgage or deed of trust that gives the seller a lien on the home. The deed transfers at closing, payments go directly to the seller each month, and if the buyer stops paying, the seller forecloses the same way a bank would. The appeal is flexibility on price, rate, and schedule. The cost is complexity: credit risk for the seller, a likely balloon payment for the buyer, and federal lending and tax rules neither side encounters in a conventional sale.
How It Works Compared to a Bank Loan
In a conventional purchase, a bank evaluates the buyer, funds the loan, and records a lien. In a seller-financed deal, the seller does all three. The buyer receives full legal title at closing. The seller holds the lien until the loan is paid off, and the seller’s only recourse if payments stop is foreclosure.
One boundary worth stating up front: a seller-financed mortgage is not a land contract (sometimes called a contract for deed). Under a land contract, the seller keeps the deed until the buyer makes every payment, so the buyer has possession but not legal title. If someone offers a land contract instead of a mortgage, the buyer’s ownership rights during the repayment period are significantly weaker. The documents in this article assume true seller financing, with title transferring at closing.
Terms the Two Sides Negotiate
Every deal starts with four numbers: purchase price, down payment, interest rate, and loan term. Getting any of them wrong creates problems that surface months or years later.
Down Payment
Down payments in seller-financed transactions tend to run higher than what banks require. The seller has no mortgage insurance to fall back on if the buyer defaults, so a larger down payment is the primary cushion. Amounts vary by negotiation, but sellers commonly ask for enough to ensure the buyer has meaningful equity at risk from day one.
Interest Rate, the AFR, and State Usury Limits
The rate is negotiable, but it cannot be set arbitrarily low. The IRS treats a loan with interest below the Applicable Federal Rate as a below-market loan and imputes the missing interest as taxable income to the seller. In some cases the shortfall is also treated as a gift from seller to buyer.1Office of the Law Revision Counsel. 26 USC 7872 – Treatment of Loans With Below-Market Interest Rates The AFR is published monthly by the IRS in three tiers: short-term (loans up to three years), mid-term (three to nine years), and long-term (over nine years).2Internal Revenue Service. Applicable Federal Rates A seller-financed loan with a five-year balloon would use the mid-term AFR in effect the month the loan closes. Check the current month’s rate before locking in terms.
On the high end, the rate must stay within state usury limits, which cap the maximum interest a private lender can charge. These ceilings vary significantly by state, so verify local law before agreeing on a number.
Amortization, Term, and Balloon Payments
Most seller-financed loans use a 30-year amortization schedule to keep monthly payments manageable, but the actual loan term is much shorter, commonly five to seven years. At the end of that term the remaining balance comes due as a balloon payment. The buyer must refinance through a bank, sell the property, or pay the balance in cash. If rates have risen or the buyer’s credit still won’t qualify for a conventional loan, the balloon becomes a serious problem. Both sides should discuss that scenario before signing.
Late Fees and Grace Periods
The promissory note should spell out the grace period before a payment is considered late and the exact dollar amount or percentage charged as a late fee. The late fee can only be charged in the amount the loan documents authorize.3Consumer Financial Protection Bureau. What Are Late Fees on a Mortgage? State law may add further limits. Vague late-fee language invites disputes, so tie a specific amount to a clear trigger date.
Federal Rules That Limit Private Sellers
The Dodd-Frank Act applies ability-to-repay rules to residential mortgage lenders, and those rules reach private sellers too. Two exemptions matter, and both hinge on how many properties the seller finances in any 12-month period.4eCFR. 12 CFR 1026.36 – Prohibited Acts or Practices and Certain Requirements for Credit Secured by a Dwelling
One-Property Exemption
A natural person, estate, or trust that sells and finances only one property in any 12-month period avoids classification as a loan originator if three conditions are met:
- The seller did not build or act as the general contractor for a home on the property.
- The payment schedule does not cause the loan balance to grow over time. Balloon payments are permitted.
- The loan carries a fixed interest rate, or if adjustable, the rate cannot adjust until at least five years in, with reasonable annual and lifetime caps.
This exemption does not require the seller to verify the buyer’s income or ability to repay, and it allows balloon payments. For a homeowner selling a single property, this is the common path.
Three-Property Exemption
A seller who finances up to three properties in a 12-month period can also avoid loan originator status, but the requirements tighten:
- The loan must be fully amortizing. No balloon payments.
- The seller must determine in good faith that the buyer can afford the monthly payments, which means reviewing income, assets, or both.
- The seller cannot have built the home.
- The rate must be fixed, or adjustable only after five years with reasonable caps.
Sellers who finance more than three properties in a year fall outside both exemptions and must comply with the full suite of federal mortgage lending regulations, including licensing requirements in most states.
The Due-on-Sale Problem
If the seller still owes money on an existing mortgage, that loan almost certainly contains a due-on-sale clause letting the lender demand full repayment the moment the property changes hands. Federal law expressly allows lenders to enforce these clauses, overriding any contrary state law.5Office of the Law Revision Counsel. 12 USC 1701j-3 – Preemption of Due-on-Sale Prohibitions
If the seller’s lender discovers the transfer, it can accelerate the remaining balance. The seller then faces an immediate payoff demand they may not be able to meet, and the buyer’s new arrangement is in jeopardy. Federal law protects a handful of transfers from triggering the clause, including inheritance, divorce, and transfers into a trust where the borrower remains a beneficiary, but a sale to an unrelated buyer is not on the list. The simplest fix is to pay off the existing mortgage at or before closing, using the buyer’s down payment and any additional funds needed.
Documents, Closing, and Recording
Two documents form the legal backbone of the transaction. The promissory note is the buyer’s written promise to repay the loan, setting out the amount, interest rate, payment schedule, due dates, late fee terms, default definition, and the balloon amount and date if one applies. The note is a private contract between the parties and is not recorded.
The mortgage (or deed of trust, depending on the state) is the document that pledges the property as collateral and gives the seller the right to foreclose. This document does get recorded. Both documents must include the exact legal description of the property as it appears on the deed or tax records: lot number, block, and subdivision name. A street address alone is not enough, and getting this wrong can make the security instrument unenforceable against the parcel. Standardized forms exist, but having a real estate attorney review both documents before signing is money well spent.
At closing, both parties sign the note and the mortgage or deed of trust before a notary, along with a new deed transferring ownership to the buyer. The mortgage or deed of trust and the new deed are then filed with the county recorder’s office (called the registrar of deeds in some jurisdictions). Recording fees vary by county. Filing establishes the seller’s priority against later creditors and puts the public on notice that the property is encumbered.
Many states also impose a transfer tax when real property changes hands. Rates range from zero in states without a transfer tax to several percent of the sale price elsewhere. Ask the county recorder or a local attorney before closing so neither side is surprised.
Due Diligence Both Sides Should Do
Without a bank involved, no one is running the background checks that institutional lenders perform automatically. The parties have to fill that gap themselves.
Title Search and Title Insurance
A title search examines public records for liens, unpaid taxes, ownership disputes, and other claims against the property. In a bank-financed sale the lender requires one. In a seller-financed deal no one forces the buyer to order the search, and skipping it is reckless. Undiscovered liens, tax debts, or boundary disputes can surface after closing and threaten ownership.
Title insurance protects against claims the search missed: forged documents in the chain of title, unknown heirs, or incorrectly filed deeds. An owner’s policy protects the buyer for the full purchase price and lasts as long as they own the property. A lender’s policy protects the seller’s lien interest. Both are one-time premiums paid at closing.
Verifying the Buyer’s Finances
Even one-property sellers who aren’t legally required to verify the buyer’s ability to repay should do it anyway. The exemption doesn’t make the risk disappear. At a minimum, request two years of tax returns, recent bank statements, and a current credit report. The goal isn’t to replicate a bank’s underwriting; it’s to confirm the buyer has stable income and isn’t already drowning in debt.
Taxes for Each Side
Seller financing creates ongoing tax obligations that neither party can ignore.
Seller: Installment Sale Reporting
When a seller receives at least one payment after the year of the sale, the IRS treats the transaction as an installment sale. Instead of recognizing the entire gain in the year of closing, the seller reports a portion of the gain with each payment received.6Internal Revenue Service. Publication 537 (2025), Installment Sales Divide the gross profit (sale price minus adjusted basis and selling expenses) by the contract price to get a gross profit percentage, then apply that percentage to each payment (excluding the interest portion) to determine the taxable gain. Report the results on Form 6252.
Interest the buyer pays is a separate income item. The seller reports it as ordinary interest income for the year received. Two distinct tax events, reported on different lines.
Seller: Form 1098
Not every seller who carries a mortgage has to issue a Form 1098. The filing is required only when the seller receives $600 or more in mortgage interest “in the course of a trade or business.” A homeowner who sells a former personal residence and carries the financing is specifically exempted.7Internal Revenue Service. Instructions for Form 1098 Sellers who regularly finance properties as an investment activity may cross the trade-or-business threshold and trigger the filing requirement.
Buyer: Deducting the Interest
The buyer can deduct mortgage interest on a seller-financed loan the same way they would on a bank loan. If the seller doesn’t issue a Form 1098, the buyer reports the interest on Schedule A, line 8b, and must list the seller’s name, address, and taxpayer identification number on the dotted lines next to that entry.8Internal Revenue Service. Publication 936 (2025), Home Mortgage Interest Deduction Both parties are required to exchange TINs for this purpose. Failing to provide or request the number can result in a $50 penalty for each instance.
If the Buyer Stops Paying
The seller’s remedy is foreclosure, governed by the same state laws that apply to banks. How it plays out depends on the state. In judicial foreclosure states, the seller files a lawsuit, obtains a court judgment, and then schedules a public auction. The process takes time and costs legal fees, but it gives the buyer court oversight and a chance to contest. In non-judicial foreclosure states, the seller can proceed through a statutory process without court involvement if the mortgage or deed of trust included a power-of-sale clause.9Legal Information Institute. Non-Judicial Foreclosure That path is faster and cheaper, but heavily regulated with mandatory notice periods and waiting times before the sale.
After a foreclosure sale, many states give the former owner a statutory right of redemption, a window to reclaim the property by paying the sale price or outstanding debt plus costs. Redemption periods vary and commonly range from 30 days to one year. A long redemption period means extended uncertainty even after a successful foreclosure, so sellers should understand their state’s rules before signing on.
Keeping the Collateral Safe
The seller’s lien is only as good as the property behind it. Two risks can erode that security without the buyer missing a single payment.
Unpaid property taxes create a government lien that jumps ahead of the seller’s mortgage in priority. If the buyer lets taxes go delinquent long enough, the taxing authority can sell the property at a tax sale and potentially wipe out the seller’s lien. Some sellers collect a monthly escrow amount on top of the regular payment and remit taxes directly. Others require annual proof of payment. Trusting the buyer to handle it without oversight is a risk that experienced seller-financers rarely take.
The same logic applies to homeowners insurance. If the property is destroyed and the buyer has no policy, the collateral is gone. The promissory note should require the buyer to maintain insurance with the seller named as an additional insured party, and the seller should verify coverage annually. Using a private loan servicing company to manage escrow for both taxes and insurance adds a modest cost and removes the need for the seller to play bill collector.