Finance & Real Estate
Calculate your exact monthly payment, total interest charges, and view a complete amortization schedule.
Understanding the Loan Estimate
Enter the principal, annual interest rate, loan term, and payment frequency shown by your lender. The calculator estimates a fixed-rate, fully amortizing payment. It is not a quote: fees, taxes, insurance, variable rates, skipped payments, and lender rounding can change the real schedule.
Formula
For monthly payments, the standard formula is M = P × [r(1+r)^n] ÷ [(1+r)^n − 1], where P is principal, r is the periodic interest rate, and n is the number of payments. Convert an annual percentage rate to a monthly decimal before using it. If the rate is zero, the payment is simply principal divided by the number of payments.
Worked example
A $20,000 balance at 6% annual interest for 5 years has a monthly rate of 0.06 ÷ 12 and 60 payments. The monthly payment is about $386.66 before fees, and the total of payments is about $23,199. Interest is the difference between those totals. Lenders may calculate daily interest or round each installment, so compare the result with the official disclosure.
Mistakes, assumptions, and questions
Do not confuse interest rate with APR, enter 6 instead of 0.06 when a decimal is required, or compare loans using payment alone. A longer term can reduce the monthly payment while increasing total interest. Ask about early repayment, late fees, balloon payments, and whether the rate can change. Read the loan calculator guide before making a borrowing decision, and use the result as an estimate rather than financial advice.
Compare offers responsibly
Compare the same principal, term, payment frequency, and fees across offers. Request an amortization schedule to see how much of each payment reduces principal. A lower payment is not automatically cheaper, and a small rate difference can matter over many payments. Confirm the official APR and total cost before signing any agreement.
Comparing Loan Scenarios
Change one input at a time to see its effect. A higher down payment lowers principal, while a shorter term usually raises the monthly payment and lowers total interest. Compare the total of scheduled payments, fees, and required insurance. A variable-rate result is only a snapshot because the rate can change later.
Amortization check
Early payments often contain more interest because the outstanding principal is largest. Each payment reduces interest slightly as principal falls. Request a lender amortization schedule and compare its first, middle, and final rows with your estimate. Do not assume an extra payment changes the term unless the lender applies it to principal.
Affordability Check
Compare the estimated payment with reliable monthly income and leave room for utilities, maintenance, insurance, savings, and emergencies. A lender’s approval is not the same as a comfortable budget. Ask whether the rate is fixed, when the first payment is due, and what happens after a missed payment.
Document the assumptions
Write down principal, rate, term, payment frequency, fees, and the date of the estimate. This makes two offers comparable and explains why a later quote may differ.
