Publisher notes · reviewed 10 September 2026
Home-loan EMI from the amortization formula
The monthly EMI on a reducing-balance home loan is M = P × [i (1 + i)^n] / [(1 + i)^n − 1], where i is the monthly rate and n is the number of EMIs. That is what this page computes. It is not a sanction letter.
Reading the payment
Early EMIs are mostly interest; later EMIs are mostly principal. A ₹50 lakh loan at 8.5% for 20 years has i = 0.085/12 and n = 240. The EMI is about ₹43,391. Total payment is EMI × 240, and interest is that total minus ₹50 lakh. Changing tenure from 20 to 25 years lowers EMI and raises lifetime interest. That trade-off is the point of the table, not a recommendation to stretch every loan.
A car loan uses the same formula with a shorter n and a different rate. Put on-road price minus down payment in P. Toolioz does not publish a second EMI page for vehicles. Floating-rate loans reprice when the lender benchmark moves; this page treats the typed rate as fixed for the full n. Extra payments belong on the loan-prepayment tool.
Worked examples
Zero-rate edge case
If i = 0, EMI is principal / n. The code uses that branch so a 0% test does not divide by zero.
Limits of this page
- Processing fees, stamp duty, GST on fees, and insurance are extra cash, not inside M.
- Part-prepayment and offset accounts are not in this EMI.