Question 1

What financial calculators does Lemon Insider offer?

Accepted Answer

Lemon Insider offers free calculators for: mortgage payment (monthly P&I for any loan amount and rate), compound interest (growth of savings over time), loan affordability (how much house you can afford), savings goal (how long to reach a target), credit card payoff (time and interest to pay off a balance), mortgage payoff (savings from extra principal payments), and mortgage refinance (break-even and savings from a rate change). All calculators are free with no sign-up required.

Question 2

How accurate are financial calculators?

Accepted Answer

Financial calculators provide mathematical estimates based on the inputs you provide. Mortgage calculators assume a fixed rate for the full term and do not include property taxes, insurance (escrow), or HOA fees unless you add them separately. Compound interest calculators assume consistent contributions and a steady rate of return. For any major financial decision, always confirm results with a licensed financial advisor or lender.

Question 3

How do I calculate my monthly mortgage payment?

Accepted Answer

Your monthly mortgage payment (principal + interest) is calculated using the formula: M = P × [r(1+r)^n] / [(1+r)^n − 1], where P is the loan amount, r is the monthly interest rate (annual rate ÷ 12), and n is the total number of payments (loan term in years × 12). For example, a $400,000 30-year mortgage at 6.75% has a monthly P&I payment of approximately $2,594. Use our Mortgage Calculator above for instant results.

Financial Calculators