Finance & Banking CalcyZone Calculator

Mortgage and Loan Calculator

Calculate monthly mortgage payments, interest costs, and total repayment schedules.

Mortgage Currency

Selected: US Dollar ($)

Home Value ($)

Down Payment ($)

Interest Rate (% Annual)

Loan Term (Years)

Estimated Monthly Payment

$1,516.96

Loan Principal$240,000.00

Total Interest$306,106.77

Total Repayment$546,106.77

Mathematical Formula

M = P * [ i(1 + i)^N ] / [ (1 + i)^N - 1 ]

Overview & Explanation

A mortgage loan calculator computes monthly principal and interest payments over the life of a loan.

How It Works

Principal P is total property value minus down payment.
Monthly interest rate i is the annual rate divided by 12 months.
Total payment count N is loan term in years multiplied by 12.

Practical Applications

Estimating home affordability and monthly budgeting.
Comparing 15 year vs 30 year mortgage payment structures.
Calculating total interest paid over the mortgage duration.

How the monthly payment is calculated

A standard repayment mortgage uses the amortisation 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 number of monthly payments. Every payment is the same, but the split changes over time: early payments are mostly interest, and later ones mostly repay principal.

This is why paying extra early in the loan saves so much interest: each extra rupee or dollar reduces the balance on which all future interest is charged.

Worked example

Borrowing 30,00,000 at 8.5 percent for 20 years: r = 0.085 / 12 = 0.007083 and n = 240. (1 + r)^240 ≈ 5.44, so M = 30,00,000 × 0.007083 × 5.44 / 4.44 ≈ 26,035 per month. Over 240 months you pay about 62.5 lakh in total, so roughly 32.5 lakh is interest — more than the amount borrowed.

What else to budget for

The monthly payment is not the whole cost of owning a home. Add property tax, insurance, maintenance (often 1 percent of the home value a year) and, in India, stamp duty and registration charges at purchase. Many lenders cap total EMIs at about 40 to 50 percent of take-home income; staying well below that leaves room for emergencies. For floating-rate loans, test the payment at a rate 1 to 2 points higher to see if it would still be affordable.