🏦 Free Loan & Interest Calculator
Loan & Interest Calculator
Calculate monthly loan payments, total interest payable and total amount due. Works for mortgages, car loans, business loans and personal loans.
How Loan Repayments Work
Most loans use an amortization schedule where each monthly payment covers interest first, then reduces the principal. Early payments go mostly to interest, later payments go mostly to principal.
Loan Repayment Formula
Monthly Payment = P × [r(1+r)^n] / [(1+r)^n - 1]
Where: P = Principal, r = Monthly rate (annual rate ÷ 12), n = Total months
Tips to Reduce Loan Interest
- Make extra payments toward the principal to reduce interest dramatically
- Choose a shorter loan term — you pay more monthly but much less overall
- Negotiate a lower interest rate or refinance when rates drop
- Make bi-weekly payments instead of monthly to make one extra payment per year
💡 A 30-year mortgage vs a 15-year mortgage on the same amount can cost you 2-3x more in total interest. Always compare total cost, not just monthly payments.
Frequently Asked Questions
How is monthly loan payment calculated?
Monthly payment uses the amortization formula: P × r(1+r)^n / ((1+r)^n - 1), where P is principal, r is monthly interest rate (annual rate ÷ 12), and n is number of months. This calculator does this automatically.
What is a good interest rate for a loan?
Good rates vary by type: mortgages 3-7%, car loans 4-8%, business loans 5-12%, personal loans 8-20%. In the UAE, home finance rates from banks are typically 3.5-5% variable. Always compare multiple lenders.
Can I pay off a loan early?
Yes, and paying extra reduces total interest significantly. Check your loan agreement for early repayment penalties. Even making one extra payment per year can save thousands in interest on a 30-year mortgage.