How Home Loan Interest Is Calculated: Daily Balance and Rests
Published 13 October 2026 · 6 min read · Clean EMI Editorial
Many borrowers know the EMI but not how the interest inside it is worked out. Banks may calculate interest on the outstanding balance at different points in time, and the method can change the amount charged in a given month. This article explains the two common approaches, shows a worked example and points to where the bank states the method that applies to your loan.
Part of the Home Loan guide series.
Two ways to count the same month
In a monthly rest method, the bank works out interest once a month on the balance, using the monthly rate. In a daily balance method, the bank applies a daily rate to the balance for each day, and the total is added up over the period. The two methods can produce slightly different figures for the same month, especially when the month has 30 or 31 days.
A worked example at 8.5%
Take an outstanding loan balance of ₹20,00,000 at the illustrative rate of 8.5% per year, which is not a bank quote.
- Monthly rest method, one month: about ₹14,167
- Daily balance method over 30 days, using 365 days in the year: about ₹13,973
- Daily balance method over 31 days: about ₹14,438
The figures move with the number of days, which is why a daily method can look different from a simple monthly figure. Neither approach is a bank quote, and banks may use other conventions.
What "rests" means
A rest is a point at which interest is worked out and added to the account. If the bank rests interest monthly, the next month's interest is charged on a balance that already includes the previous month. More frequent rests mean interest is charged on a slightly bigger base over time. Your loan agreement and the bank statement show which pattern applies.
Why timing of payments matters
Under a daily balance method, paying a part of the loan earlier in the month can reduce the interest for those days. Under a monthly method, the effect may appear only at the next rest. Ask the bank when a prepayment takes effect and whether it reduces the interest, the EMI or the tenure.
- Read the interest clause in the loan agreement
- Check a statement and see how the interest for one month was calculated
- Ask the bank to confirm the method in writing if it is not clear
Where to check the method
The method is set out in the loan agreement and the bank's terms, and it can differ by product. For a broader understanding of how EMIs are built, read annual and monthly rate conversion, and use the EMI calculator for your own figures. For the product, see the home loan page. The bank's interest calculation and the final figures rest with the lending bank. The Central Bank of India profile is a place to start.
Frequently Asked Questions
Is interest calculated on the original loan or the outstanding balance?
Normally on the outstanding balance. As principal is repaid, the balance falls and the interest for each period falls with it.
Why does the interest for one month look different from my statement?
The method, the number of days and the timing of payments can all cause differences. Compare the statement with the method in your loan agreement.
Does a daily balance method always cost less?
Not always. It depends on when payments and prepayments are made within the month, and on how the bank applies them.
Where can I confirm how my bank calculates interest?
Check the loan agreement and the bank terms, or ask the bank in writing. The bank can explain the method for your product.
Useful free tools
- Free Credit Analyzer — Upload your CIBIL report and see which loans you may be eligible for, with an indicative EMI.
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- Home Loan Balance Transfer Calculator — Compare your current EMI with a lower-rate loan over the same remaining tenure.
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