Amortissement de Prêt

Last updated: 2026-08-24

Amortissement de Prêt — Calculez la mensualité et les intérêts totaux d'un prêt.
Inputs
Result
Enter values and press Calculate

How to use it

  1. {'step': 1, 'description': 'Convert annual rate to monthly', 'calculetion': '4.5% ÷ ÷ 100 = 0.00375'}
  2. {'step': 2, 'description': 'Calculate Total payments', 'calculetion': 'years × 12 = months'}
  3. {'step': 3, 'description': 'Apply mortgage formule', 'calculetion': '$250,000 × [0.00375(1.00375)^360] ÷ [(1.00375)^360 - 1] = $1,266.71'}
  4. {'step': 4, 'description': 'Calculate Total interest', 'calculetion': '($1,266.71 × 360) - $250,000 = $206,015.60'}

Common mistakes

  • ⚠️ Not accounting for property taxes and insurance in Total payment
  • ⚠️ Paying only minimum without considering extra principal payments
  • ⚠️ Refinancing without calculeting break-even point on closing costs

Worked example

Calculating monthly payment for $250,mortgage at 4.5% over years.

The payment of {payment} is your monthly mortgage payment. The total_interest of {total_interest} is paid over the loan life.

Input guide

FieldTypical range
principal$10,000 - $2,000,000+ loan amounts
rate2-12% annual interest rates
years5-40 years loan terms