Finance Tools
Mortgage, compound interest, loan prepayment, refinance, car lease and solar payback calculators. Clear answers with the maths shown, no sign-up.
Finance Tools
Mortgage Calculator
Monthly payment, total interest and your payoff date
Open$2,023/moon a $400k home, 20% down
Compound Interest Calculator
Watch savings grow, reach a goal, or see the cost of waiting
Open$300,851$500 a month for 20 years at 7%
Loan Prepayment Calculator
How much sooner extra payments make you debt-free
Open12½ years soonerpaying $500 extra a month
Prepayment vs Refinance Calculator
Pay extra or refinance? A fair side-by-side verdict
OpenRefinancesaves $42,882 more than paying extra
Car Buy vs Lease Calculator
Buy or lease, with net cost and a check of the dealer quote
OpenBuy$10,297 less than leasing over 5 years
Solar Panel ROI Calculator
When solar pays for itself, from your bill and state
Open6.9-year paybackthen $61k ahead over 25 years