Seller Financing Calculator

Purpose-built for structuring owner-financed deals: payment, balloon payoff, total interest collected, effective yield, and a clean deal summary you can share.

Deal terms
$
$
%

Monthly payment

$2,202.53

Note amount

$315,000

Total interest to seller

$115,196

Through balloon

Seller's effective yield

7.76%

Balloon payoff due

$298,045

Jul 2031

Deal summary
Sale price
$350,000
Down payment
$35,000 (10.0%)
Note amount
$315,000
Rate
7.5%
Amortization
30 years
Monthly payment
$2,202.53
Balloon amount
$298,045
Balloon date
Jul 2031
First payment
Aug 2026
Note balance over time

Structuring an owner-financed sale

In seller financing (owner financing), the seller becomes the bank: the buyer puts money down, signs a promissory note for the balance, and pays the seller monthly. The most common structure is a long amortization — 20 to 30 years, to keep payments affordable — with a balloon in 3 to 10 years so the seller doesn't wait decades for full payoff. The schedule here truncates at the balloon date and shows the exact payoff amount owed.

Pricing the note

Seller-financed notes usually carry rates 1–3% above bank mortgage rates to compensate for risk and illiquidity. The calculator's effective yield figure is the internal rate of return the seller earns on the financed balance through the balloon or full term. Interest-only structures maximize monthly income but repay no principal — the entire note comes due at the balloon.

When the seller still has a mortgage

If the property still carries an existing loan, a straight owner-finance note gets complicated — that's exactly what a wraparound mortgage is for. Model it with the wraparound mortgage calculator, which tracks both loans, the payment spread, and the seller's true yield. New to the concept? Start with Seller Financing Explained.

Frequently asked questions