Enter your loan amount, monthly payment, and tenure. We'll calculate the annual interest rate you're actually being charged — plus total interest and full schedule.
Every payment, every month. See exactly how much goes to principal and how much to interest.
| Period | Principal paid | Interest paid | Total payment | Balance remaining |
|---|
Figures are rounded to the nearest unit. The implied rate is the annual rate that makes the present value of all payments equal to the loan amount.
It's the rate that solves the EMI equation — found by iteration.
When you know the loan amount, monthly payment, and tenure, there's exactly one interest rate that makes the numbers balance. That's the implied annual rate.
💡 Formula: P = EMI × [1 − (1+r)⁻ⁿ] ÷ r, where P is principal, r is the monthly rate, and n is the number of months. We solve for r numerically.
Unlike the EMI formula, this equation can't be rearranged algebraically. We use binary search — a numerical method that converges on the exact rate in a fraction of a second.
How to find the real cost of a loan — and why the advertised rate isn't always the full story.
The present value of all future payments must equal the loan amount:
P = EMI × [1 − (1+r)⁻ⁿ] ÷ r
Where:
Because this equation has no algebraic solution for r, we solve it numerically using binary search. We start with a range (0% to 100%) and keep narrowing it until we find the rate that matches your numbers.
Many lenders advertise a "flat rate" that looks low but actually costs much more. A flat 10% on a 5-year loan is roughly equivalent to a reducing-balance rate of about 18%. This calculator always gives you the effective reducing-balance rate — the true cost of borrowing.
⚠️ Always ask whether a quoted rate is flat or reducing-balance. The difference can be enormous over the life of a loan.
Processing fees, insurance, and other charges reduce the amount you actually receive while keeping your payments the same. That pushes the effective interest rate higher than the quoted rate.
For example, a 1% processing fee on a 5-year loan adds roughly 0.4–0.5% to your effective annual rate. This calculator doesn't include fees — but you can subtract them from the principal to see the effect.
If you're considering a balance transfer, enter the new loan amount, the new monthly payment, and the new tenure. The implied rate tells you whether the new deal is actually cheaper than your current loan.
Don't forget to account for processing fees on the new loan and any foreclosure charges on the old one.
For a fixed monthly payment, a longer tenure means a lower implied rate — but more total interest. Conversely, a shorter tenure with the same payment implies a higher rate (because you're paying off faster, which requires a higher rate to match the same payment).
This is why you can't compare rates across different tenures directly. Always compare the total cost, not just the rate.
The implied interest rate is the single most useful number for comparing loan offers. It strips away marketing language and tells you what you're actually paying. Use it before you sign anything.
Only three inputs drive the number. Here's what each one does.
Higher principal for the same payment implies a higher interest rate — more of your payment goes to interest.
Higher payment for the same principal and tenure implies a higher rate — you're paying off faster.
Longer tenure for the same payment implies a lower rate — but more total interest.
Take it further once you know your rate.
Over 35 common questions about interest rates, answered.
The implied interest rate is the annual rate that makes the present value of all your loan payments equal to the amount you borrowed. It's the true cost of borrowing, regardless of how the lender advertises the rate.
We solve the equation P = EMI × [1 − (1+r)⁻ⁿ] ÷ r for r using binary search. This numerical method converges on the exact rate quickly and accurately.
The equation has r in multiple places (including inside an exponent), so it can't be rearranged to isolate r. Numerical methods like binary search are the standard approach.
Reducing balance charges interest only on the outstanding balance — interest falls as you repay. Flat rate charges interest on the full original principal for the entire tenure, which costs much more. A flat 10% ≈ reducing 18%.
No. It calculates the rate based on the loan amount and payments only. Processing fees, insurance, and other charges will increase your effective rate beyond what's shown here.
Subtract the fees from the loan amount before entering it. For example, if you borrow ₹10 lakh with a ₹20,000 processing fee, enter ₹9,80,000 as the principal — the resulting rate will reflect the true cost.
It depends on the loan type. Home loans: 7–10%. Car loans: 8–12%. Personal loans: 10–20%. Credit cards: 30–45%. Always compare offers from multiple lenders.
Not necessarily. For a fixed payment, a longer tenure implies a lower rate. But lenders often charge higher rates for longer tenures because of increased risk.
Floating-rate loans are often linked to an external benchmark. When the RBI changes the repo rate, your loan's interest rate adjusts, which can change your EMI or tenure.
A rate that changes with market conditions and central bank policy. Can go up or down, affecting your EMI or tenure. Fixed rates stay the same throughout.
Use this calculator for each offer. Compare the implied rates and total repayment amounts. The one with the lower total cost is better — not necessarily the one with the lower advertised rate.
APR is the annual rate that includes both interest and certain fees. It's a more complete measure of cost than the interest rate alone. This calculator gives the interest rate component — subtract fees from principal for an APR-like figure.
An interest-only payment made during construction of a home loan, before full disbursement. Once the property is ready, full EMIs begin.
In India, home loan interest is deductible under Section 24(b) up to ₹2 lakh/year. Education loan interest is deductible under Section 80E without an upper limit for 8 years. Consult a tax advisor.
Moving your loan to a new lender offering a lower rate. Can significantly reduce total interest — but factor in processing fees and foreclosure charges on the old loan.
Depends on the loan type. Fixed-rate loans keep the same rate throughout. Floating-rate loans change with market conditions. Most home loans in India are floating-rate.
Missing a payment triggers a late fee (usually 1–2% of the overdue amount), damages your credit score, and can lead to legal action if repeated. Contact your lender immediately if you're struggling.
A common rule: total EMIs shouldn't exceed 35–40% of your net monthly income. Use our Affordability Calculator for a more accurate picture based on your real budget.
Not directly. What affects your score is repayment behaviour — paying on time, not defaulting. But longer tenure means more total interest, which affects your overall financial health.
Yes, but you'll likely pay a higher interest rate. Some NBFCs and fintech lenders specialise in lower-score borrowers. Improving your score first can save you a lot.
A secured loan is backed by collateral (like a home or car), so interest rates are lower. An unsecured loan has no collateral, so rates are higher to compensate for risk.
The same reducing-balance formula. Home loans usually have longer tenures (up to 30 years), which lowers the EMI but increases total interest.
Typically: identity proof (PAN, Aadhaar), address proof, income proof (salary slips or ITRs), bank statements, and employment details. Requirements vary by lender.
A one-time fee (usually 0.5–2% of the loan) for processing your application. It's typically deducted from the disbursed amount.
Three ways: negotiate a lower rate, choose a shorter tenure, and make prepayments whenever possible. Prepaying early has the biggest impact.
Someone who shares responsibility for the loan. A co-applicant with good credit and stable income can improve approval chances and may get you a lower rate.
Yes. Most loans allow early repayment via a lump-sum payment. Some lenders charge a prepayment penalty — check your agreement first.
Loan-to-Value ratio — the loan amount as a share of the asset's value. For home loans, a lower LTV (larger down payment) usually gets you a lower interest rate.
The lender has assessed your profile and is willing to lend a certain amount without a full application. Usually based on your credit history and relationship with the lender.
Yes, but lenders consider your total debt-to-income ratio. Too many active loans can make it harder to get new credit and may increase the rate on future loans.
A secured loan where you pledge your property as collateral. Interest rates are usually lower than unsecured personal loans.
Personal loans: hours to days. Home loans: 1–3 weeks due to property verification and legal checks. Car loans: usually 1–3 days.
Also called a moratorium — a temporary period without EMIs. Interest still accrues, so you'll pay more overall. Some lenders offer this for job loss or medical emergencies.
Fixed offers certainty but often starts slightly higher. Floating can be cheaper if rates fall, costlier if they rise. Choose based on your risk tolerance and rate expectations.
A numerical representation of your creditworthiness (300–900 in India). Higher scores (750+) get better rates, faster approvals, and higher eligibility.
Pay all bills on time, keep credit utilisation under 30%, don't apply for too much credit at once, and maintain a mix of credit types. Check your report for errors regularly.
Legal action, seizure of collateral (for secured loans), severe damage to your credit score, and difficulty getting credit in future. Talk to your lender early — most prefer restructuring over default.
Shortest tenure your comfortable EMI can support. A longer tenure reduces monthly strain but increases total interest significantly.
A shortcut to estimate doubling time: 72 ÷ rate = years. At 9%, money doubles in about 8 years. Useful for understanding compound growth or debt.
Some retailers offer "0% EMI" schemes, but the cost is usually hidden in the product price or a processing fee. Read the fine print.
Very accurate — we use binary search with a tolerance of 0.0001% and 100 iterations. The result matches what a financial calculator would give.
Use the Affordability Calculator to find the loan that fits your real budget — not just what the bank will lend.
