Repayment guide
How Loan EMI Is Calculated
Instant Loan Solutions editorial team · Published 10 September 2026 · Updated 10 September 2026
Short answer
EMI is calculated on a reducing balance from three inputs: the loan amount, the monthly interest rate and the number of instalments. Early instalments carry more interest and less principal; the mix reverses over time. A longer tenure lowers the monthly instalment but increases the total interest paid.
Key points
- Three inputs decide the EMI: amount, rate and tenure.
- Interest is heaviest in the early instalments on a reducing-balance loan.
- Tenure is the strongest lever on total interest paid.
- The EMI excludes processing fees, insurance and, on secured loans, legal and valuation charges.
- On a floating-rate loan, either the EMI or the tenure changes when the benchmark moves.
The formula
EMI = P × r × (1 + r)^n ÷ ((1 + r)^n − 1), where P is the principal, r is the monthly interest rate (annual rate divided by twelve, expressed as a decimal) and n is the number of monthly instalments.
You do not need to compute it by hand. Our calculator applies the same formula and also shows the total interest and the total repayment, which are the figures worth comparing.
What tenure actually does
Extending the tenure spreads the same principal across more instalments, so each one is smaller. Because interest accrues for longer, the total paid over the life of the loan rises. A comfortable EMI is important, but so is knowing what the comfort costs.
What the EMI does not include
- Processing fee and documentation charges
- Insurance premium, where taken
- Stamp duty, legal and valuation charges on secured loans
- Penal charges on delayed payment
- Foreclosure or part-payment charges, as per the lender's terms
Comparing two offers properly
- Compare total repayment, not only the monthly instalment
- Check fixed against floating and what happens when rates move
- Read the part-payment and foreclosure terms before signing
- Include the processing fee in the comparison
Use the calculator
Set the amount, an assumed rate and the tenure, and see how the instalment and the total interest respond. Treat the rate as an assumption — the actual rate, tenure and sanctioned amount are decided by the lender.
Frequently asked questions
Why does my outstanding barely fall in the first year?
On a reducing-balance loan, early instalments are weighted toward interest. The principal component grows as the loan progresses.
Does part-payment reduce the EMI or the tenure?
Depending on the lender's terms, you may be able to choose. Reducing the tenure usually saves more interest than reducing the EMI.
Is the calculator result the amount I will pay?
No. It is an illustration based on the inputs you enter. Actual terms are determined by the lender.
About this guide
Written and reviewed by the Instant Loan Solutions team, a loan assistance and consultancy service based in Camp, Pune. We are not a bank or an NBFC; lending decisions rest with the lender.
Instant Loan Solutions provides loan assistance and application support. Final approval, sanctioned amount, interest rate and tenure are decided by the lender based on its own eligibility and credit assessment.