An EMI is a flat number. You pay ₹26,035 in month one and ₹26,035 in month 240, and nothing in between varies. What does vary — enormously — is what that payment is made of. In the first year of a ₹30,00,000 loan at 8.5%, about ₹59,707 goes against the loan and ₹2,52,709 goes to the bank as interest.
That is roughly 81% interest in year one. It takes until month 143 — year 12 of 20 — before a single instalment finally repays more than it costs.
Where the money actually goes
Interest is charged on what you still owe. Early on you owe nearly everything, so nearly all of the payment is interest; late on you owe very little, so nearly all of it is principal. The instalment is constant because the two halves trade places, not because the loan is being repaid evenly.
By the final year the position has completely reversed: ₹2,98,495 against the loan and ₹13,921 in interest. The last few instalments are almost pure repayment — which is exactly why prepaying at the end saves you almost nothing, and prepaying at the start saves you a great deal.
This is why the early years feel like nothing is happening. After five years of paying ₹26,035 a month — ₹15,62,082 in total — the outstanding balance has fallen from ₹30.00 L to about ₹26.44 L. You have handed over ₹15.62 L and cleared ₹3.56 L of debt.
What the whole loan costs
Over the full term you pay ₹62.48 L on a ₹30.00 L loan. The interest alone is ₹32.48 L — more than the amount you borrowed. At 8.5% over 20 years, 52% of everything you pay is interest.
Tenure is the biggest lever, and it works both ways
Stretching the tenure lowers the instalment, which is how loans are sold. It also raises the total, because you are borrowing the same money for longer.
| Tenure | Monthly EMI | Total interest | Interest vs loan |
|---|---|---|---|
| 10 years | ₹37,196 | ₹14.63 L | 49% |
| 15 years | ₹29,542 | ₹23.18 L | 77% |
| 20 years | ₹26,035 | ₹32.48 L | 108% |
| 25 years | ₹24,157 | ₹42.47 L | 142% |
| 30 years | ₹23,067 | ₹53.04 L | 177% |
Note where the interest bar crosses the loan itself. Somewhere between 15 and 20 years, the interest on a ₹30.00 L loan becomes larger than the loan. At 30 years you repay 177% of the principal in interest on top of the principal.
One extra instalment a year
Because interest is charged on the outstanding balance, anything that reduces that balance early removes interest from every month that follows. Paying one extra EMI a year — thirteen payments instead of twelve — is the standard version of this.
That is ₹6.17 L saved for an extra ₹26,035 a year — and the loan gone 3.3 years early. The reason it works so hard is the same reason the early instalments feel wasted: money removed from the balance in year three stops accruing interest for the remaining seventeen.
The rate moves the crossover too
A higher rate does not just cost more — it pushes the month at which you start making real progress further out.
| Interest rate | Crossover month | In year |
|---|---|---|
| 7% | 122 | 11 of 20 |
| 8.5% | 143 | 12 of 20 |
| 10% | 158 | 14 of 20 |
| 12% | 172 | 15 of 20 |
At 12% on a 20-year loan you are more than fourteen years in before a single instalment repays more than it costs. This is why even a small reduction at refinancing is worth chasing: it changes the shape of the whole schedule, not just the monthly number.
Run it on your own loan
Our EMI calculator takes your own principal, rate and tenure and shows the same year-by-year split, with the balance curve and the total interest. If you want to see the other side of the same arithmetic — what money does when it is compounding for you rather than against you — the compound interest calculator is the same mathematics pointed the other way.
One thing worth checking before any of it: lenders size an EMI against your take-home pay, not the CTC on your offer letter, and the gap between the two is wider than most people expect. Our guide to CTC versus in-hand salary works out where the rest of the package goes — a ₹12 lakh package pays about ₹88,000 a month, which is the number an EMI of ₹26,035 has to fit inside.