Loan EMI Calculator Online - Monthly Payment & Interest

Frequently asked questions

What exactly is an EMI?

An Equated Monthly Instalment — a fixed payment that covers both interest and principal, so the loan clears exactly at the end of the term. The amount stays the same each month, but its composition shifts: early payments are mostly interest, later ones mostly principal.

Why do I pay so much interest in the early years?

Interest is charged on the outstanding balance, which is at its largest at the start. That is also why overpaying early has an outsized effect — every extra pound reduces the balance that all future interest is calculated on.

Is the rate I enter annual or monthly?

Enter the annual rate as quoted; it is converted to a monthly rate internally. Be aware that an advertised APR may bundle in fees, so an EMI calculated from the headline rate can differ slightly from a lender's own quote.

Pro tips

Divide, never subtract, when working backwards from a total to find the amount before tax or before a discount.
Compare loans on total interest paid rather than the monthly payment — a longer term lowers the monthly figure while costing considerably more overall.
Watch for stacked discounts: 20% off then a further 10% off is 28% off, not 30%, because the second applies to the reduced price.
State whether you mean percentage points or percent when reporting a change; the two differ by a factor that can be enormous.
For a tip split, agree whether the tip is calculated before or after tax before dividing — the two give different answers and both are conventional somewhere.

About Percentage & Finance Calculator

The loan figures use the standard amortising formula, where the monthly payment stays level while the split between interest and principal shifts across the term. That is why total interest, rather than the monthly number, is the figure worth comparing between two offers.

Estimate the monthly EMI, the total interest and the total amount payable on a loan from its principal, rate and term. All the amortisation maths runs privately on your device.

Work out percentages and percentage change, sale discounts and final prices, tip splits per person, and monthly loan or EMI payments with total interest — all in one place. It covers the everyday money maths that comes up while shopping, dining out, budgeting and comparing loans.

Switch between modes to answer 'what is X% of Y', 'how much do I save', 'what is each person's share' or 'what will this loan cost'. Percentage change is the one to double-check: 40 rising to 50 is a 25% increase, while 50 falling back to 40 is a 20% decrease.

Two percentage mistakes are common enough to be worth naming. The first is confusing a percentage change with a percentage point change: a rate moving from 2% to 3% is a rise of one percentage point and an increase of fifty percent, and both statements are true of the same movement. The second is assuming changes cancel — an item discounted 20% then raised 20% does not return to its original price, because the increase is calculated on the smaller figure. £100 becomes £80 and then £96.

Reversing a percentage is the operation people most often get backwards. To find the pre-tax figure inside a £120 total at 20% tax, you divide by 1.2 to get £100; subtracting 20% of £120 gives £96 and is simply wrong. The same applies to working out an original price from a sale price. Whenever you are undoing a percentage rather than applying one, the operation is division.

Common use cases

Checking what a mortgage or car loan will actually cost each month
Comparing a shorter term at a higher payment against a longer, cheaper one
Seeing how much a longer term adds to the total interest

How it comparesA spreadsheet handles all of this and requires you to write the formula correctly, which is where the reversal errors happen. Dedicated loan calculators from lenders tend to foreground the monthly payment; seeing total interest alongside it is what makes two offers comparable.