Part-Prepayment Calculator — MakeMyCred
PART-PREPAYMENT CALCULATOR

Compare three partial prepayment scenarios

Set up to three different partial prepayment strategies side by side — different amounts, different timings — and see exactly which one saves you the most interest.

Compare 3 scenarios at once
Best option highlighted
Full side-by-side schedule

Loan & scenario details

≈ 180 monthly instalments
Reduce tenure keeps EMI the same but finishes the loan faster — usually saves the most interest.
A Scenario A
B Scenario B
C Scenario C
Best scenario
₹0
Interest saved vs. no prepayment
Metric No prepay A B C
COMPARISON SCHEDULE

How each scenario plays out

Outstanding balance year by year for the baseline and all three prepayment scenarios.

Period No prepay Scenario A Scenario B Scenario C

Figures show the outstanding balance at the end of each period. Figures are rounded to the nearest unit and assume no missed payments.

WHAT MATTERS

Four things that decide which scenario wins

Understanding these helps you configure scenarios that actually work.

Amount prepaid

Bigger prepayments save more interest, but the relationship isn't perfectly linear when timing differs between scenarios.

Timing of prepayment

A ₹1 lakh prepayment in year 1 saves far more than ₹2 lakh in year 10. Early prepayments work harder per rupee.

Lump sum vs. monthly

Monthly extras compound — a smaller amount paid every month can beat a bigger one-off lump sum later in the loan.

Cost vs. benefit

If a prepayment attracts a penalty or fee, factor that into the net savings. The best scenario is the one with the highest net benefit, not the highest gross savings.

DEEP DIVE

The complete guide to part-prepayment

How to think about partial prepayments — and how to choose between them.

1. What is a part-prepayment?

A part-prepayment is any payment you make toward your loan that's over and above your scheduled EMI. It can be a single lump sum, a recurring monthly extra, or a combination. The entire extra amount goes directly to reducing your outstanding principal — never toward interest.

Because interest is calculated on the outstanding balance, any part-prepayment immediately reduces the base on which future interest is charged. The result: you pay less total interest and (usually) finish the loan sooner.

2. Why comparing scenarios matters

Not all prepayments are created equal. Two strategies with the same total cash outflow can produce very different savings. For example:

  • A ₹2 lakh lump sum in year 5 might save ₹4.5 lakh in interest.
  • ₹5,000/month for 40 months (also ₹2 lakh total) starting in year 1 might save ₹5.5 lakh.
  • A ₹2 lakh lump sum in year 10 might only save ₹2.8 lakh.

Same money, very different outcomes. That's why comparing scenarios is valuable — the best answer isn't always the most obvious one.

💡 Rule of thumb: the earlier your money lands on the principal, and the more frequently you pay, the more interest you save — for the same total cash outlay.

3. How to set up meaningful scenarios

The three scenario slots in this calculator are designed to let you compare the trade-offs that actually matter. Here are some useful ways to structure them:

  • Same amount, different timing: ₹2 lakh in year 1 vs. year 5 vs. year 10. Shows how much timing matters.
  • Lump sum vs. monthly: ₹3 lakh lump sum vs. ₹10,000/month for 30 months vs. both.
  • Do nothing vs. modest vs. aggressive: Baseline, ₹50,000 lump sum, ₹2 lakh lump sum. Shows the diminishing returns of larger prepayments.
  • Different milestones: What if you prepay after a bonus at year 1 vs. at year 3 vs. at year 5?

4. Why earlier is almost always better

Reducing-balance interest is front-loaded. On a typical loan, more than half the total interest is charged in the first third of the tenure. Once that interest has been paid, prepaying only affects the smaller remaining balance, so it saves less.

This is why a ₹1 lakh prepayment in month 6 typically saves 3–4x more interest than the same prepayment in month 120. The math is unforgiving: the earlier you act, the bigger the reward.

5. Cost of prepayment

Prepayment isn't always free. Depending on your loan type:

  • Floating-rate home loans: No prepayment penalty for individual borrowers (RBI rule).
  • Fixed-rate loans: Often a penalty of 1–2% of the prepaid amount.
  • Personal loans: Frequently 2–4% prepayment penalty.
  • Car loans: Varies — many lenders now allow free prepayment.

If your lender charges a penalty, the true savings are reduced by that cost. The best scenario is the one with the highest net benefit, not just the highest gross savings.

6. Reduce tenure vs. reduce EMI

When you prepay, your lender typically gives you two options:

  • Reduce tenure: Your EMI stays the same, but the loan closes earlier. Saves the most interest.
  • Reduce EMI: Your tenure stays the same, but your monthly payment drops. Improves cashflow but saves less interest.

Unless cashflow is a genuine problem, reduce tenure is usually the better choice. The difference in total interest saved can be 40–60% higher.

7. When prepayment doesn't make sense

  • You don't have an emergency fund. Build 6–12 months of expenses first.
  • You have high-interest credit card debt. Pay that off — it costs 3–4x more than any loan.
  • Your loan rate is very low. If you have a 4% home loan and can earn 10% in equity markets, investing may beat prepaying.
  • You'd lose significant tax deductions. Home loan interest is deductible up to ₹2 lakh/year — a real subsidy that prepaying erases.

8. A worked comparison

Take a ₹20 lakh loan at 9% for 15 years. Monthly EMI: ₹20,285. Total interest if untouched: ₹16.51 lakh.

  • Scenario A — ₹1L in month 12: Saves ~₹1.9L interest, closes 8 months early.
  • Scenario B — ₹2L in month 24 + ₹3,000/month: Saves ~₹4.4L interest, closes 2 years early.
  • Scenario C — ₹5L in month 60: Saves ~₹3.6L interest, closes 1.6 years early.

Notice how Scenario B — with a smaller lump sum than C — saves the most. That's the monthly extra working in its favour: it keeps reducing the balance from month 1, whereas C waits until month 60 before making a move.

✓ Consistent monthly extras often beat a larger one-off lump sum later in the loan. If you have the cashflow, recurring prepayments are powerful.

9. How to use this calculator

  1. Enter your loan amount, rate, and tenure.
  2. For each scenario, enter a lump sum amount and the month you'd pay it.
  3. Optionally add a monthly extra that continues until the loan closes.
  4. Toggle scenarios on/off to compare different combinations.
  5. Review the comparison table — the winning scenario is highlighted.
  6. Scroll down to see how each scenario plays out year by year.

10. Final thoughts

Part-prepayment is one of the highest-return, lowest-risk financial moves available to most borrowers. Every rupee you prepay earns a guaranteed, tax-free return equal to your loan's interest rate. For most people, that's a return they can't reliably beat in markets — especially on a risk-adjusted basis.

The catch is liquidity. Prepayment locks your money into debt reduction — you can't easily get it back. That's why the right answer depends on your emergency fund, job stability, investment opportunities, and psychological comfort with debt. Run the scenarios in this calculator, then choose what fits your life.

QUESTIONS

Frequently asked questions

Over 35 common questions about part-prepayment and prepayment strategies.

A part-prepayment is any extra payment toward your loan beyond the scheduled EMI. It goes directly to principal — never to interest — and reduces your balance immediately.

Part-prepayment reduces the balance but keeps the loan open. Full prepayment (foreclosure) pays off the entire outstanding balance and closes the loan. Part-prepayments can be made multiple times; foreclosure happens once.

Because timing matters as much as amount. Two strategies with the same total cash outflow can save very different amounts of interest depending on when you pay. Comparing scenarios reveals which one actually works hardest for you.

It depends on the exact numbers, but generally earlier is better. A smaller amount prepaid early can save more than a larger amount prepaid late, because it cuts interest from the moment it lands. Run both scenarios to see.

For the same total amount, monthly extras often win because they reduce the balance from month 1 onward. A lump sum delays the benefit until the month you pay it. Use the calculator to see how each plays out for your loan.

Yes. Most lenders allow any number of partial prepayments. There may be a minimum amount per prepayment, but no limit on how often you can do it.

Varies by lender — typically ₹10,000 to ₹25,000, or one EMI. Check your loan agreement for the exact rule.

In India, floating-rate loans to individuals cannot have prepayment penalties (RBI rule). Fixed-rate loans often charge 1–2%. Personal loans frequently charge 2–4%.

Reduce tenure unless cashflow is genuinely tight. Reducing tenure keeps your EMI the same but closes the loan faster — usually saving 40–60% more interest than EMI reduction.

Varies widely. A ₹2 lakh prepayment on a ₹20 lakh, 9%, 15-year loan in year 1 can save ₹3–4 lakh in interest. The same prepayment in year 10 saves much less. Use the calculator for exact figures.

Yes, but watch for prepayment penalties. Personal loans often have 2–4% penalties, and even car loans may charge a fee. The penalty can erode the savings significantly.

Not directly. Closing the loan early may cause a small, temporary dip because you have fewer active credit lines, but the effect is minor and usually short-lived.

If your loan rate is higher than expected post-tax investment returns, prepay. If lower, invest. Psychologically many prefer prepaying because the return is guaranteed. A hybrid approach is also valid.

Yes. On a home loan you can deduct up to ₹2 lakh/year of interest under Section 24(b). Prepaying reduces future interest, which reduces the deduction you can claim.

You can't easily undo a prepayment. This is why prepaying from your emergency fund is risky. Only prepay with money you're confident you won't need access to in the near term.

Yes. Prepayment applies to the combined balance. If you have a top-up loan on the same account, prepaying reduces the total outstanding.

No. By default most lenders reduce tenure, keeping your EMI the same. If you want your EMI to drop, you must specifically request it. Some lenders let you choose at the time of prepayment.

Usually yes, unless your loan agreement specifies otherwise. Prepaying during a moratorium can be particularly effective, since you're reducing the balance that would have compounded during the pause.

Through your lender's net banking, mobile app, or by visiting a branch. You'll often need to submit a prepayment form and specify whether you want to reduce tenure or EMI.

Yes. Prepayments reduce the outstanding principal, which reduces the interest you pay in subsequent months. Your tax deduction is based on interest paid, so it will be lower in future years.

No. Prepayments always go toward principal. That's the whole point — reducing the balance you're paying interest on. There's no way to prepay interest.

You'll save very little interest because most of the interest has already been paid. In the final year, nearly all your EMI goes to principal anyway. Prepaying then mostly just closes the loan faster without much financial benefit.

Generally no. Loans are repaid from bank accounts, not credit cards. Using a credit card to prepay a loan would just shift debt to a much higher interest rate — never a good idea.

There's no universal ideal. Prepay as much as you can while keeping 6–12 months of expenses as an emergency fund and without sacrificing higher-return opportunities. Even small recurring prepayments add up significantly.

Yes. Either co-applicant can make a prepayment, and it applies to the shared loan. Tax benefits on the interest remain split based on ownership share.

No approval is needed. You just notify the lender and pay. Some lenders require a prepayment request form, but it's a formality, not an approval process.

Yes, but it usually attracts a penalty of 1–2% of the prepaid amount. The penalty may reduce the benefit — run the numbers with a "cost of prepay" included in your scenario.

Balance transfer moves the loan to a lower-rate lender; prepayment reduces the balance. They're complementary — you could do both. Often the best strategy is to first transfer to a lower rate, then prepay.

Typically after refinancing. Once you've secured the lower rate, any prepayment saves more because it's cutting a lower-rate interest — but wait, lower rate means less interest to save. Actually, prepay before or after — the timing of the rate change matters less than the total principal reduction.

This is the main risk of aggressive prepayment. If you prepay away your emergency fund and then lose income, you could be forced into higher-interest debt. Always keep a healthy buffer before prepaying.

Not directly. Top-up eligibility depends on your repayment history and remaining tenure. Prepaying reduces your outstanding, which could make you eligible for a top-up sooner, but it also shortens your remaining tenure.

No. Prepayments are repayments of borrowed money — not income. There's no tax on prepaying a loan, and no deduction for prepaying either (only for interest paid).

Partial prepayments typically don't show separately on your credit report. What shows is the declining balance. Once you fully prepay, the loan is marked "closed" — generally a positive signal.

Very close but not exact to the rupee. Lenders use slightly different rounding conventions and may charge day-wise interest between payments. Expect actual figures within 1–2% of these estimates.

This calculator provides estimates for general guidance only. Actual savings depend on your lender's policies, rounding conventions, and any prepayment penalties. Costs of prepayment are not automatically included in the comparison. This is not financial advice.

Found the winning scenario? Now lock it in.

Use the Prepayment Calculator for a single-scenario deep dive with full schedule.

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