Loan Amortization Calculator — EMI Schedule India

Loan Amount

₹

Annual Interest Rate

Loan Tenure

years

Monthly EMI

₹0

● Principal 0.0%● Interest 100.0%

Total Interest

₹0

Total Payable

₹0

Loan Amount

₹30,00,000

Tenure

20 years

What is a Amortization?

A loan amortization calculator generates the complete repayment schedule for any reducing balance loan — showing not just the monthly EMI, but the exact split between principal and interest for every payment across the full loan tenure. It is the most comprehensive loan analysis tool available to a borrower.

The concept behind amortization is the reducing balance method: interest is charged only on the outstanding principal, which decreases with every EMI. As a result, the interest component of each payment shrinks over time while the principal component grows — even though the EMI amount stays fixed throughout. On a 20-year home loan, the first few years of payments are predominantly interest, while the last few years are predominantly principal recovery.

In India, this is the standard structure for all scheduled bank loans — home loans, car loans, personal loans, education loans, and business loans — as mandated by the Reserve Bank of India. Understanding this structure helps borrowers make three critical decisions: choosing the right tenure, evaluating the true cost of borrowing, and timing prepayments for maximum savings.

The common experience of borrowers who have paid EMIs for 5 years and find their outstanding balance has barely moved is explained entirely by amortization dynamics. On a 20-year ₹30 lakh home loan at 8.5%, after 5 years of faithful EMI payment, you still owe approximately ₹26.5 lakh — because over 80% of those early EMIs went to interest. The amortization schedule makes this visible, specific, and plannable.

For borrowers evaluating a home purchase decision, pair this calculator with the Down Payment Calculator to determine your loan amount first, then use the amortization schedule to compare 15-year versus 20-year tenure scenarios. For borrowers managing multiple loans, the Debt Payoff Calculator can help prioritise which loan to prepay first.

How to use this Amortization calculator

Enter your Loan Amount — the principal amount sanctioned by the bank, or your current outstanding balance if you are analysing an existing loan. For home loans, this is typically the disbursed amount minus any down payment you made. Values between ₹1 lakh and ₹10 crore are supported.
Set the Annual Interest Rate — enter the rate your bank charges, as shown in your sanction letter or loan statement. Indian home loans in 2026 typically range from 8–9.5% p.a. (floating), personal loans from 10–24% p.a., and car loans from 8.5–12% p.a. If your loan has a floating rate, enter the current applicable rate — you can re-run the calculator whenever the rate changes.
Adjust Loan Tenure — the total repayment period in years. Home loans run 10–30 years, car loans 3–7 years, personal loans 1–5 years. Move the slider between 15 and 20 years on a home loan to immediately see the EMI and total interest impact of choosing a longer tenure for lower monthly payments.
Study the amortization schedule — after reviewing the headline outputs (EMI, Total Interest, Total Payable, Principal %), scroll down to the schedule. In yearly view, note how the outstanding balance moves — you will typically see that after 5 years on a 20-year loan, you have repaid only 10–12% of the principal. Switch to monthly view for a specific month's breakdown.
Run prepayment what-if scenarios — enter a reduced loan amount (original amount minus planned prepayment) and shortened remaining tenure to see the new EMI and total interest. The difference between the original and new Total Interest figures is your prepayment saving.

Formula & Methodology

EMI formula (reducing balance method):

EMI = P × r_m × (1 + r_m)ⁿ ÷ ((1 + r_m)ⁿ − 1)

Where:
- P = principal loan amount (₹)
- r_m = monthly interest rate = Annual Interest Rate ÷ 12 ÷ 100
- n = loan tenure in months = Loan Tenure Years × 12

Interest component of payment k:

Interest_k = Outstanding Balance_(k−1) × r_m

Principal component of payment k:

Principal_k = EMI − Interest_k

Outstanding balance after payment k:

Balance_k = Balance_(k−1) − Principal_k

Worked example — ₹30 lakh home loan at 8.5% p.a. over 20 years:

- P = ₹30,00,000
- r_m = 8.5 ÷ 12 ÷ 100 = 0.007083
- n = 20 × 12 = 240 months
- (1 + 0.007083)²⁴⁰ = 5.4437

EMI = 30,00,000 × 0.007083 × 5.4437 ÷ (5.4437 − 1) = ₹26,035

Month 1 breakdown:
- Interest = ₹30,00,000 × 0.007083 = ₹21,250 (81.6% of EMI)
- Principal = ₹26,035 − ₹21,250 = ₹4,785 (18.4% of EMI)
- Closing Balance = ₹30,00,000 − ₹4,785 = ₹29,95,215

Total Payable = ₹26,035 × 240 = ₹62,48,400
Total Interest = ₹62,48,400 − ₹30,00,000 = ₹32,48,400
Principal % = ₹30,00,000 ÷ ₹62,48,400 × 100 = 48.0%

Assumptions:
- The reducing balance method is used throughout — interest is charged on the outstanding principal after each payment, not on the original loan amount.
- EMI is constant for the full tenure; only the split between interest and principal changes each month.
- No processing fees, prepayment penalties, or other charges are included in the calculation — these are lender-specific and should be added to your cost comparison separately.
- For home loans linked to an external benchmark (repo rate), the EMI may change when the benchmark rate changes. Re-run the calculator with the revised rate whenever your bank revises it.
- For loans with a holiday or moratorium period, use the Education Loan Calculator which handles interest capitalisation during the moratorium.

Frequently Asked Questions

What is loan amortization and how does it work?

Loan amortization is the process of paying off a loan through equal periodic payments, where each payment covers both the interest due and a portion of the outstanding principal. In the early months, most of the EMI goes towards interest because the outstanding balance is highest; as you repay principal, the interest component shrinks and the principal component grows with each instalment. By the final payment, almost the entire EMI is principal repayment. This reducing balance structure is the standard for home loans, car loans, and personal loans in India.

What is an amortization schedule?

An amortization schedule is a complete month-by-month (or year-by-year) table showing how each EMI payment splits between interest and principal, and what the outstanding loan balance is after each payment. It lets you see exactly when you cross the halfway mark on principal repayment, how much interest has accumulated after any given month, and what balance remains if you wish to prepay at a specific point. Our Loan Amortization Calculator generates this schedule automatically — toggle between monthly and yearly views using the controls on the results page.

What is the EMI formula for loans in India?

The standard EMI formula used by all Indian banks for reducing balance loans is: EMI = P × r × (1+r)ⁿ ÷ ((1+r)ⁿ − 1), where P is the principal loan amount, r is the monthly interest rate (annual rate ÷ 12 ÷ 100), and n is the loan tenure in months. This formula is mandated by the Reserve Bank of India for retail loans and is consistent across banks, NBFCs, and housing finance companies.

What is the difference between reducing balance and flat rate interest?

In reducing balance (amortising) loans — which all scheduled Indian bank loans use — interest is charged only on the outstanding principal balance, so the interest portion shrinks as you repay principal. In flat rate loans (common in cooperative society loans and some vehicle finance schemes), interest is computed on the original loan amount throughout the tenure, making the effective cost much higher. A flat rate of 10% p.a. is roughly equivalent to a reducing balance rate of 18–20% p.a. Always confirm which method your lender uses before comparing rates.

Why does the interest portion of my EMI seem so high in early months?

Interest is charged on the outstanding loan balance, which is highest at the beginning of the loan. On a ₹30 lakh home loan at 8.5% p.a., the interest due in month 1 is ₹30,00,000 × (8.5÷12÷100) = ₹21,250 — more than 81% of the ₹26,035 EMI. As each instalment reduces the outstanding balance, the interest component decreases and the principal component increases, but this shift is slow in the early years. For a 20-year loan, you typically cross the 50/50 principal-interest tipping point only around years 10–12.

What is Principal % in the amortization results?

Principal % shows what fraction of your total loan repayment (all EMIs combined) represents the original loan amount. If your Principal % is 48%, it means 48 paise of every rupee paid goes towards recovering the original loan, while 52 paise is pure interest. A lower Principal % indicates a higher interest burden — common in long-tenure high-rate loans. Reducing your loan tenure or making prepayments improves the Principal % and reduces total interest paid.

How does loan prepayment affect the amortization schedule?

Prepayment reduces the outstanding principal balance immediately, which lowers the interest charged in every subsequent month. You can either reduce your EMI and maintain the same tenure, or maintain the same EMI and reduce the tenure — most financial advisers recommend the latter, as it minimises total interest paid. For a ₹30 lakh home loan at 8.5% over 20 years, a single ₹3 lakh prepayment in year 3 can reduce the remaining tenure by approximately 2–3 years and save ₹5–7 lakh in interest. The amortization schedule lets you quantify this before deciding.

How to use the Loan Amortization Calculator?

Enter your Loan Amount (the principal sanctioned or outstanding), set the Annual Interest Rate as quoted by your lender (most Indian home loans are 8–9.5% p.a. as of 2026), and adjust Loan Tenure to the number of years for repayment. The calculator instantly shows your Monthly EMI, Total Interest, Total Payable, and Principal % — along with a scrollable amortization schedule. Toggle between yearly and monthly views to see as much or as little detail as you need.

Can I use this calculator for home loans, car loans, and personal loans?

Yes — the amortization formula is identical for all reducing balance loans regardless of asset type. For a home loan, enter the sanctioned amount and current floating rate; for a car loan, enter the on-road price minus down payment as the loan amount; for a personal loan, enter the disbursed amount and the fixed interest rate. The amortization schedule will accurately reflect the repayment structure for each. For specific EMI calculations with bank-standard outputs, also see our [Home Loan EMI Calculator](/home-loan-emi-calculator/) or [Car Loan EMI Calculator](/car-loan-emi-calculator/).

How much total interest do I pay on a ₹30 lakh home loan?

On a ₹30 lakh home loan at 8.5% p.a. over 20 years, the total interest payable is approximately ₹32.5 lakh — slightly more than the original loan amount. Over 30 years at the same rate, total interest would be approximately ₹55 lakh. This is why tenure selection matters enormously: reducing from 20 to 15 years on the same loan saves roughly ₹12–14 lakh in interest at the cost of a higher monthly EMI. The amortization schedule makes this trade-off visible and precise.

What is the minimum loan amount I can calculate amortization for?

The Loan Amortization Calculator works for loan amounts from ₹1 lakh upwards. While most Indian banks have minimum loan thresholds (home loans typically start at ₹5 lakh, personal loans at ₹50,000), the calculator itself is unrestricted so you can plan any loan size. Interest rates between 5% and 25% p.a. are supported, covering the full range from subsidised government housing finance rates to unsecured personal loan rates charged by NBFCs.

What is the difference between a loan amortization calculator and an EMI calculator?

An EMI calculator tells you the fixed monthly payment amount. A loan amortization calculator does everything an EMI calculator does, and additionally generates the full repayment schedule — month-by-month interest, principal, and outstanding balance. If you only need the EMI figure, a basic EMI calculator suffices. If you want to understand the full cost of the loan, plan a prepayment, or see when your outstanding balance crosses a specific threshold, the amortization calculator is the correct tool. Our [Home Loan EMI Calculator](/home-loan-emi-calculator/) is purpose-built for home loan details, while this amortization calculator is the more comprehensive general-purpose option.