What a reducing rate means
A reducing interest rate, also called a reducing-balance or diminishing rate, charges interest only on the part of the loan you still owe. Each EMI (your fixed monthly payment) pays back some principal, the money you borrowed. So the next month’s interest is worked out on a smaller balance, and the interest part of each EMI keeps falling.
The standard EMI formula works this way. Its opposite is a flat rate, where interest is charged on the full original amount for the whole loan.
A worked example
Ravi, 34, borrows ₹1,00,000 for 12 months at 12% a year on a reducing balance. The monthly rate is 1% (12% divided by 12). His EMI is ₹8,885.
| Month | Balance at start | Interest (1% of balance) | Principal repaid |
|---|---|---|---|
| 1 | ₹1,00,000 | ₹1,000 | ₹7,885 |
| 2 | ₹92,115 | ₹921 | ₹7,964 |
| 6 | ₹59,779 | ₹598 | ₹8,287 |
| 12 | ₹8,797 | ₹88 | ₹8,797 |
In month 1 the interest is ₹1,000. By month 12 it is ₹88, because almost nothing is left to charge interest on. Across the year Ravi pays ₹6,619 in interest and ₹1,06,619 in total.
Fictional example. The 12% rate is illustrative, not an offer. Calculated by Paisavy with the standard EMI formula and rounded to the nearest rupee. Fees are left out.
Now compare a flat rate. The same ₹1,00,000 at 12% flat for 12 months costs ₹12,000 in interest, with an EMI of ₹9,333. That is close to double Ravi’s interest for the same “12%”.
Where you see it
Your Key Facts Statement (KFS) states the interest rate and whether it is fixed or floating. The KFS is the short loan summary that banks and NBFCs (finance companies that are not banks) must give you before you sign. The repayment schedule in your loan agreement shows the interest and principal in every EMI. Loan apps often show the same split under “repayment details”. Some offers just say “12% p.a.” without saying “reducing”. In that case, ask.
Common mistakes
Thinking the rate is the full cost. A reducing rate covers interest only. A processing fee and other charges come on top. The APR in your KFS adds them in, so it is the better number for comparing loans.
Mixing it up with a floating rate. Reducing describes how interest is calculated. Floating describes whether the rate itself can change over time. A loan can be reducing and fixed, or reducing and floating.
Expecting the balance to fall evenly. It falls slowly at first, because early EMIs carry more interest. Halfway through Ravi’s loan, after 6 EMIs, he still owes ₹51,492. So paying extra early in a loan saves more interest than paying the same extra near the end.
What to check
- Look for the words “reducing balance” or “diminishing” next to the rate in your KFS or offer letter.
- Ask for the repayment schedule and check that the interest part falls each month.
- Compare offers by APR and total repayable, not by the headline rate.
- If the rate is floating, ask whether a rate change would alter your EMI or your tenure.
The EMI & total cost calculator shows the full monthly schedule for any reducing-rate loan.