A reducing balance calculator shows your EMI and total interest when interest is charged only on the balance you still owe. As you repay, the balance falls, so the interest falls too. This is the fair and most common way banks charge interest on home, car, and personal loans, and it costs less than a flat rate at the same number. This tool works for more than 70 currencies and is part of our interest calculators.
How to use the reducing balance calculator
- Pick your country and currency, then keep the method on reducing balance.
- Enter the loan amount you want to borrow.
- Enter the interest rate and the term in years.
- Read your results: the EMI, the total interest, the total payable, and a year by year schedule.
What is a reducing balance loan?
On a reducing balance loan, also called a diminishing balance loan, interest each month is worked out on the amount you still owe, not the original amount. Because your balance goes down with every payment, the interest charged also goes down over time. Your EMI usually stays the same, but inside it the interest part shrinks and the principal part grows as the loan goes on.
How reducing balance interest is calculated
The monthly payment uses the standard EMI formula:
EMI = P × r × (1 + r)n / ((1 + r)n − 1)
Here P is the loan amount, r is the monthly interest rate (the yearly rate divided by 12, then by 100), and n is the number of monthly payments.
Worked example: Borrow 10,000 at 12% reducing balance for 5 years (60 months). The EMI is about 222, and the total interest is about 3,346. The same 10,000 at a 12% flat rate would charge 6,000 in interest, so reducing balance saves you about 2,650 here.
How each EMI splits over time
Early in the loan, most of your EMI pays interest because the balance is still high. Later, most of it pays down the principal. This is why a reducing balance loan rewards early extra payments so well: cutting the balance early removes interest from every month that follows. You can see the full breakdown with our amortization schedule tool.
Reducing balance vs flat rate
At the same headline number, reducing balance is always cheaper than flat rate, because flat rate keeps charging interest on money you have already repaid. As a rough guide, a 5% flat rate is close to about a 9.8% reducing balance rate over 5 years. So a reducing balance loan can have a higher number on paper and still cost less. Compare the two with our flat rate calculator, and check the true yearly cost with the effective interest rate calculator.
Where reducing balance is used
Reducing balance is the standard method for most bank loans worldwide, including mortgages, car loans, and personal loans in the US, UK, Europe, India, and most other markets. When a Western lender quotes an APR, it is based on a reducing balance. Flat rate is mostly seen with some dealers and lenders in the Gulf, Pakistan, and parts of Asia and Africa.
How prepayment saves you more
Because interest is charged on the outstanding balance, any extra payment lowers the balance and removes interest from all the months that follow. Even small extra payments early in the loan can save a large amount. See your exact saving with the loan prepayment calculator, but check your agreement for any early payment fee first.
Tips for a reducing balance loan
- Compare by reducing balance or APR, not a flat rate, so you see the true cost.
- Choose the shortest term you can afford to cut total interest.
- Pay extra early when the interest part of your EMI is largest.
- Watch for prepayment fees before making large early payments.
Reducing balance loans around the world
Rates differ by country, so always check current terms with local lenders. See examples and currencies for your country:
Pakistan (PKR) · India (INR) · UAE (AED) · Saudi Arabia (SAR) · United Kingdom (GBP) · All countries
Frequently asked questions
What is a reducing balance loan?
How is reducing balance interest calculated?
Is reducing balance cheaper than flat rate?
Why does my EMI stay the same if interest is falling?
Does paying early save more on a reducing balance loan?
Do banks use reducing balance or flat rate?
Built and maintained by Hira Fatima, BSc in Computer Science (BSCS)
Hira builds, tests, and maintains the calculators on loancalc.io and writes the guides that go with them.
How we calculate: Reducing balance uses the standard EMI formula; flat rate charges interest on the full original amount. | Last updated: June 2026
Disclaimer: This calculator gives estimates for planning only and is not financial advice. Your actual figures may differ due to fees, taxes, and lender policies. Confirm with your bank or lender before you borrow.