Loan prepayment calculator
A single extra payment can quietly erase lakhs in interest and clear your loan years early. See exactly how much money and time a one-time or recurring prepayment saves — and what every ₹1 you prepay is really worth.
Your loan & prepayment
Numbers update as you drag
Prepayment type
Debt-free 5 yr 2 mo sooner
Without prepaying
₹48.69L
interest · 20 yr
With prepaying
₹30.18L
interest · 14 yr 10 mo
You avoid ₹18.51L in interest and finish 5 yr 2 mo early — for ₹5L prepaid.
₹18.51L
Interest saved
over the loan
5 yr 2 mo
Time saved
finish sooner
₹3.70
Per ₹1 prepaid
interest saved
14 yr 10 mo
New term
till debt-free
How fast the balance falls
The shaded gap is the debt you skip · hover to read any point
Year-by-year breakdown
With your prepayments applied, until the loan clears
| Year | Opening | EMI paid | Prepaid | Interest | Closing |
|---|---|---|---|---|---|
| 1 | ₹42L | ₹4.53L | ₹5L | ₹3.32L | ₹35.79L |
| 2 | ₹35.79L | ₹4.53L | — | ₹3.17L | ₹34.42L |
| 3 | ₹34.42L | ₹4.53L | — | ₹3.04L | ₹32.92L |
| 4 | ₹32.92L | ₹4.53L | — | ₹2.9L | ₹31.28L |
| 5 | ₹31.28L | ₹4.53L | — | ₹2.74L | ₹29.49L |
| 6 | ₹29.49L | ₹4.53L | — | ₹2.57L | ₹27.53L |
| 7 | ₹27.53L | ₹4.53L | — | ₹2.39L | ₹25.38L |
| 8 | ₹25.38L | ₹4.53L | — | ₹2.19L | ₹23.04L |
| 9 | ₹23.04L | ₹4.53L | — | ₹1.97L | ₹20.47L |
| 10 | ₹20.47L | ₹4.53L | — | ₹1.73L | ₹17.67L |
| 11 | ₹17.67L | ₹4.53L | — | ₹1.47L | ₹14.6L |
| 12 | ₹14.6L | ₹4.53L | — | ₹1.18L | ₹11.24L |
| 13 | ₹11.24L | ₹4.53L | — | ₹86.25K | ₹7.57L |
| 14 | ₹7.57L | ₹4.53L | — | ₹51.8K | ₹3.55L |
| 15 | ₹3.55L | ₹3.7L | — | ₹14.53K | ₹0 |
Interest saved
₹18,51,238
Methodology
How prepayment saves you money
Interest is charged on your outstanding balance. Knock that balance down with a prepayment and every future EMI carries less interest — so a bigger share goes to principal, and the loan ends sooner. Here’s the chain of events.
We keep your EMI fixed and apply prepayments as extra principal, then re-amortise month by month until the balance hits zero — the same engine behind every figure on this page.
- 1
Your EMI is split
Each EMI pays this month’s interest first; whatever is left chips away at the principal. Early on, interest eats most of it.
- 2
A prepayment cuts principal
Every prepaid rupee goes straight to the balance — no interest attached. The balance drops in one step.
- 3
Future interest shrinks
A smaller balance means less interest next month, so more of each fixed EMI now attacks the principal.
- 4
The loan ends early
That compounding-in-reverse clears the debt months or years ahead of schedule — and the interest you never paid is your saving.
Worked examples
What a prepayment really buys
Three common loans, three ways to prepay — every figure computed by the same engine that powers the calculator above.
Home loan · one-time
₹40L left at 9% with 20 years to go; prepay ₹5L now
- Interest saved
- ₹18.28L
- Time saved
- 5 yr 4 mo
- Total prepaid
- ₹5L
Home loan · monthly extra
₹40L at 9%, 20 years; add ₹10k to every EMI
- Interest saved
- ₹21.35L
- Time saved
- 8 yr 2 mo
- Total prepaid
- ₹14.1L
Car loan · yearly bonus
₹8L at 11%, 5 years; prepay ₹1L each year
- Interest saved
- ₹79.76K
- Time saved
- 1 yr 9 mo
- Total prepaid
- ₹3L
Questions
Frequently asked
What is loan prepayment?
Loan prepayment means paying more than your scheduled EMI — either a one-time lump sum or a little extra every month or year. The additional amount goes straight towards your outstanding principal, which reduces the interest charged on every future EMI. On a long loan this can save several lakhs of rupees and clear the debt years early.
Does prepayment reduce my EMI or my tenure?
You usually get to choose, but reducing the tenure saves far more interest. This calculator keeps your EMI the same and shortens the loan, because a fixed EMI against a smaller balance clears the principal faster. Reducing the EMI instead lowers your monthly outgo but barely changes the total interest — so it does not save you time.
Is a one-time or a recurring prepayment better?
Both help; what matters is how early and how much. A large one-time prepayment early in the loan removes principal that would otherwise have compounded interest for years. Recurring prepayments — a fixed extra each month or a yearly bonus — are easier to sustain and add up powerfully over time. Use the toggle to compare your own numbers.
Are there charges for prepaying a loan?
For floating-rate home loans taken by individuals, the RBI does not allow prepayment or foreclosure charges. Fixed-rate loans and some personal or car loans may carry a charge of 2–5% of the prepaid amount, so check your loan agreement. Even with a small charge, the interest saved usually dwarfs it — but factor it in before deciding.
Should I prepay my loan or invest the money instead?
Compare your loan rate with the return you can reliably earn after tax. Prepaying a 9% home loan is a guaranteed 9% saving, which is hard to beat safely. If you expect higher returns from equities over a long horizon and are comfortable with the risk, investing may win. Many people do both — prepay enough to feel secure, and invest the rest.
When does prepaying make the most difference?
Early in the loan. In the first years, most of your EMI goes towards interest, so removing principal then avoids the most future interest. The same prepayment made in the final years saves very little, because little interest is left to charge. If you have a windfall, prepaying sooner almost always beats waiting.