Abacocalc
/

Loan Payment

Calculate the monthly payment, total cost and interest of an amortizing loan.

€
€
%
yrs
Extra payments
Monthly payment€506.69
Loan amount€100,000.00
Total paid€182,406.71
Total interest€82,406.71
PayoffSep 2056
€182,407Total Repayment
  • Interest · 45.2%
  • Principal · 54.8%

Amortization schedule for your 30-year loan

See how your payments and remaining balance evolve, month by month.

Payment No.MonthYearPaymentPrincipalInterestPrincipal paidInterest paidLoan balance
1Sep2026€506.69€131.69€375.00€132€375€99,868
2Oct2026€506.69€132.18€374.51€264€750€99,736
3Nov2026€506.69€132.67€374.01€397€1,124€99,603
4Dec2026€506.69€133.17€373.51€530€1,497€99,470
5Jan2027€506.69€133.67€373.01€663€1,870€99,337
6Feb2027€506.69€134.17€372.51€798€2,243€99,202
7Mar2027€506.69€134.68€372.01€932€2,615€99,068
8Apr2027€506.69€135.18€371.50€1,067€2,986€98,933
9May2027€506.69€135.69€371.00€1,203€3,357€98,797
10Jun2027€506.69€136.20€370.49€1,339€3,728€98,661
11Jul2027€506.69€136.71€369.98€1,476€4,098€98,524
12Aug2027€506.69€137.22€369.46€1,613€4,467€98,387
Page 1 / 30

How it works

The loan calculator finds the fixed monthly payment of an amortizing loan from the amount, the annual interest rate and the term. Each payment is part interest (on the remaining balance) and part principal (which reduces the balance).

The payment formula is M = P · r · (1+r)^n / ((1+r)^n − 1), where P is the principal, r the monthly rate (annual/12) and n the number of payments. Early on you pay mostly interest; over time more of each payment goes to principal.

Example: a €100,000 loan at 4.5% over 30 years gives a payment of about €507 and total interest of roughly €82,000. Extra payments cut either the term or the payment and save interest.

Frequently asked questions

How is the monthly payment calculated?

Using the amortization formula: the principal is multiplied by the monthly rate and spread into equal payments across the full term, so the balance reaches zero at the end.

What does an extra payment save me?

Any extra amount goes straight to the principal, so future interest drops. You can choose to shorten the term (same payment, finishes sooner) or lower the payment (same term, smaller monthly amount).

Is the rate fixed or variable?

The calculation assumes a fixed nominal rate for the whole term. With a variable-rate loan the payment changes when the rate changes, so the result is an estimate.

Related calculators

Compound InterestDiscountSimple InterestReturn on Investment (ROI)