Understanding Loan Calculations
Loan calculations use the standard amortization formula to determine equal monthly payments that will pay off both principal and interest over the loan term. Understanding these calculations helps you make informed borrowing decisions.
The Monthly Payment Formula
M = P × [r(1+r)^n] / [(1+r)^n - 1]
Where: M = Monthly payment, P = Principal, r = Monthly interest rate, n = Number of payments
Tips for Borrowers
- Shorter terms mean higher monthly payments but less total interest
- Lower interest rates can save thousands over the life of the loan
- Extra payments toward principal can significantly reduce total interest
- Compare APR (Annual Percentage Rate) which includes fees
FAQ
What's the difference between interest rate and APR?
APR includes the interest rate plus fees and other costs, giving a more complete picture of borrowing costs.
Should I choose a 15-year or 30-year mortgage?
15-year mortgages have higher payments but save significant interest. 30-year mortgages offer lower payments but cost more in total.