Loan Affordability Calculator
Find out how much you can safely borrow. Enter your income, existing debts, interest rate and term — the tool computes your maximum affordable monthly payment, the largest loan amount that payment supports, the total interest, and your debt-to-income ratio against a lender cap.
This is an estimate for planning only. Real loan approval depends on your credit history, income proof, fees, insurance and the lender\u2019s own rules. Not financial advice.
How to use
- Enter your gross monthly income before tax and any debt payments you already make each month.
- Set the interest rate, loan term and the DTI cap your lender allows (40% is the usual default).
- Click Calculate affordability to see your safe borrowing limit.
How the math works
Your affordable payment room is the DTI cap times your income, minus the debts you already pay. The maximum loan is the present value of an annuity: that monthly payment, at the monthly interest rate, over the number of loan months. Total interest is the difference between all payments and the loan amount. The tool recalculates instantly every time you press the button.