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Monthly payments, for every option.

Enter the price, APR and term. See the monthly payment, total paid and interest.

THE SHORT ANSWER

A fixed-rate monthly payment equals the amount times the monthly rate, divided by one minus (1 plus the monthly rate) to the power of minus the number of months. Showing the monthly figure next to each option helps homeowners compare good, better and best.

The full guide, with a worked exampleRead the guide
How it works

How is a monthly payment worked out?

For a fixed-rate loan, the monthly payment is the amount times the monthly rate, divided by one minus (1 plus the monthly rate) to the power of minus the number of months. The monthly rate is the APR divided by 12.

  • Show the monthly figure next to every option
  • Use the real terms from your financing partner
  • Follow your lender's disclosure rules on proposals

Financing payment calculator

For planning. Your lender's terms rule.

Monthly payment $159/mo $19,022 paid in total · $7,022 interest

Fixed rate, equal monthly payments, no fees or promotional periods included.

Proposals that close

Good, Better, Best, each with its monthly price.

Sunwell shows a monthly payment on every option, and the homeowner signs on their phone.

See how proposals work
Questions

What shops ask before they switch.

How is a monthly payment calculated?

Payment = P x r / (1 - (1 + r)^-n), where P is the amount financed, r is the APR divided by 12, and n is the number of months.

Should I show a monthly price on proposals?

Showing a monthly payment next to each option helps homeowners compare. Use the real terms from your financing partner, and follow their disclosure rules.

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