Monthly Payment Calculator
Calculate the monthly payment for any loan instantly. Enter loan amount, interest rate and term to compare payment options side by side.
What is a Monthly Payment Calculator?
A Monthly Payment Calculator is a universal financial tool that computes the fixed monthly payment required to fully repay any instalment loan over a specified term. Unlike loan-specific calculators, this tool works across all loan types — personal loans, car loans, home loans, business loans, student loans, or any credit facility with regular monthly payments. It is the quickest way to standardise and compare loan offers from different lenders who may quote different terms and rates.
When comparing loan offers, lenders often present different combinations of interest rate and tenure to make their product appear attractive. This calculator cuts through that complexity — enter any combination of amount, rate, and term to instantly see the true monthly commitment. For type-specific calculations with additional inputs like down payment or property value, use our Mortgage Calculator or Car Loan Calculator. For the full month-by-month breakdown, our Loan Amortization Calculator provides the complete schedule.
How to Use This Calculator
- Enter Loan Amount: The principal — the total amount you are borrowing or the remaining outstanding balance if you are mid-loan.
- Enter Annual Interest Rate: The yearly rate as quoted by your lender. Make sure it is the effective rate and not a flat rate, as these produce very different results.
- Enter Loan Term in Months: 12 months = 1 year, 24 = 2 years, 60 = 5 years, 120 = 10 years. Try multiple term lengths to find the payment that suits your budget.
- Click Calculate: Instantly compare monthly payments, total interest, and full repayment for your entered values.
Monthly Payment Formula
Where: P = Principal, R = Monthly interest rate (annual ÷ 12 ÷ 100), N = Number of monthly payments.
How Payment Changes with Term
₹5,00,000 loan at 10% per annum:
| Term | Monthly Payment | Total Interest | Total Repaid |
|---|---|---|---|
| 12 months | ₹43,960 | ₹27,520 | ₹5,27,520 |
| 24 months | ₹23,073 | ₹53,752 | ₹5,53,752 |
| 36 months | ₹16,134 | ₹80,824 | ₹5,80,824 |
| 48 months | ₹12,685 | ₹1,08,880 | ₹6,08,880 |
| 60 months | ₹10,624 | ₹1,37,440 | ₹6,37,440 |
Using Monthly Payment Calculations for Financial Planning
The monthly payment figure is the most critical number in personal finance planning — it determines whether a loan fits your budget or not. Financial planners typically recommend the 28/36 rule: no more than 28% of gross monthly income on housing payments and no more than 36% on all debt payments combined. Use this calculator to test whether any proposed loan keeps you within these healthy debt ratios. For tracking and paying off existing debt efficiently, our Debt Payoff Calculator helps you sequence repayments to minimise total interest. For planning whether you can afford a home purchase given your current income and savings, combine this with our Down Payment Calculator to assess readiness before approaching a bank.
Flat Rate vs Reducing Balance — Why It Matters
This calculator uses the reducing balance method (also called the diminishing balance method), which is the standard used by all Indian banks and regulated lenders for retail loans. In the reducing balance method, interest is calculated on the outstanding loan amount each month, so your interest cost reduces as you repay. Some lenders, particularly for short-term lending and dealer financing, use a flat rate method where interest is calculated on the full original principal throughout the tenure. At the same stated rate, a flat rate loan always costs significantly more — the effective annual rate of a flat rate loan is approximately 1.8 times the stated rate. Use our Simple Interest Calculator to calculate flat rate loan costs and compare with reducing balance results from this tool to understand the true difference.