Calculators
Loan & Finance Calculators
Seller (owner) financing payments and balloon payoffs — plus auto, equipment, and other financed-purchase calculators we're adding next. Free, no signup.
Loan & finance calculators
Live now — validated against published worked examples before shipping.
Seller Financing Calculator
LiveCalculate the payment and balloon balance due on an owner-financed property sale.
Roof Financing Calculator
LiveCompare payment types, plus a check on what a missed 0% promo deadline really costs.
Invoice Finance Calculator
LiveSee what invoice factoring actually pays out — as a real APR — plus overdue invoice late fees.
Classic Car Financing Calculator
LiveModel terms up to 180 months, with a warning if your term is stretching total interest too far.
Lease vs Finance Calculator
LiveCompare leasing vs. buying on net cost, accounting for the equity a financed vehicle builds.
Modular Home Financing Calculator
LiveSee whether you need a standard mortgage or a chattel loan, and what each actually costs.
More financing calculators
Launching on a rolling basis.
From the blog
Deep dives to help you get more out of the calculator above.
0% APR or Cash Rebate? The Real Math on Dealer Financing Offers
Why the "free" 0% loan isn't always the cheaper option once you run the actual numbers.
Seller Financing from the Buyer's Side: What to Check Before You Sign
The due-on-sale and balloon-payment risks that matter most to the buyer, not just the seller.