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Test every way of paying your loan off early — extra instalments, rounded-up payments, lump sums, one-time prepayments, or switching to weekly or fortnightly — and see exactly how much interest and time each one saves.
Step 1
Describe the loan
Enter the amount, rate and remaining tenure of the loan you want to attack.
Step 2
Pick an acceleration strategy
Combine extra instalments, round-ups, recurring extras and lump sums however you like.
Step 3
Compare the two payoffs
Watch the animated race, then check the ranked table to see which single change wins.
You finish the loan
3 years 3 months earlier
You save
₹6,17,484 in interest
39 months saved
Payoff comparison
3 years 3 mo earlier
Interest without extra payments
₹32,48,327
Scheduled completion
20 years
If you keep paying only the scheduled EMI, this loan runs for 20 years. With the extra payments you entered, it finishes in 16 years 9 months — 3 years 3 months earlier. You pay ₹6,17,484 less interest because extra amounts reduce principal immediately, so later months are charged on a smaller balance.
Average monthly outlay
₹28,014
₹1,979 a month more than the standard plan.
Total repaid
₹56,30,844
Down from ₹62,48,327 on the standard plan.
There is no closed-form formula for this. Every extra payment changes the balance that all later interest is charged on, so the payoff date has to be found by simulating the loan period by period until the balance reaches zero.
Balanceₖ = Balanceₖ₋₁ × (1 + r) − (Payment + Extraₖ)Balance after payment k
The simulation stops at the first k where this hits zero.
Rate per payment period
The annual rate divided by the payments per year: 12 monthly, 26 fortnightly, 52 weekly.
Scheduled payment
The monthly instalment, halved for fortnightly or quartered for weekly, then rounded up if you choose.
Extra paid at period k
Recurring top-ups plus any extra instalment, annual lump sum or one-time prepayment falling due.
Interest saved is the difference between the interest totals of the two simulations, and time saved is the difference between their payoff periods. Because each strategy is simulated independently, they can be combined freely without the estimates drifting.
A normal instalment first pays that month’s interest. An extra instalment that the lender credits to principal does not have a thirteenth month of interest to cover — it shrinks the balance. Later months are then cheaper in interest. That is why 13 EMIs a year can finish a long loan noticeably sooner than 12, without changing the contractual EMI.
The headlines on this page — you finish X years Y months earlier, you save ₹… in interest — are the difference between the contractual simulation and the accelerated one. They are not a cash bonus from the bank.
Thirteen instalments a year is lumpy. Raising EMI every month is smoother. An annual bonus prepayment is another lump. All three work if they hit principal. They stress cash flow differently. Combine them in the inputs if that is how you actually pay; the ranked table also shows each tactic alone.
This calculator assumes extra payments shorten the loan rather than lowering EMI. That usually saves more interest. If your lender recomputes a smaller EMI over the original term, your saving will be smaller than the figure here. Confirm the treatment before you celebrate.
Penalties, a thin emergency fund, or a loan rate that is low relative to a risk you are willing to take all weaken the case. Prepayment versus investing is the decision method; this page is the loan-side sketch. Baseline EMI maths lives on the EMI calculator.
Answers about the extra emi impact calculator.
Continue exploring adjacent tools in this topic.
Guides that explain the ideas behind these numbers.
An EMI is one number on your statement and two jobs inside it. This guide explains principal, reducing-balance interest and why a smaller instalment can cost more over the life of the loan.
Thirteen instalments instead of twelve is not a thirteenth month of interest. It is an extra principal payment. Here is why that shortens the loan and what it does not guarantee.
Prepaying a loan earns a return equal to the interest you no longer pay. Investing might earn more, or less, and with different tax and risk. This is a comparison method, not a verdict.
A sanction letter draws your eye to the interest rate and the EMI. Neither is the number that decides what the loan costs you. Here is what to look at instead, and which clauses are worth negotiating before you sign.
These figures are estimates based on the values and assumptions you enter. Market returns are not guaranteed. Tax, brokerage and other rules can change. Finaura is an educational tool, not personalised financial, tax, investment or legal advice. Confirm important decisions with the relevant institution or a qualified professional.