How to use (3 steps)
- Pick what you need: check current DTI or estimate how much you can borrow within your target limits.
- Enter income, other monthly loans, and either the known mortgage payment or loan amount + APR + term.
- Add target DTI and down payment to see an affordable loan amount and home price. Use “Copy URL” to share.
Currency symbol is cosmetic only; type numbers without symbols or commas.
Inputs
Keep income and loan amounts in the same currency. Results update automatically.
Results
How it’s calculated
This tool uses your monthly gross income, mortgage payment, and other loan payments to calculate debt-to-income (DTI) ratios.
- Housing DTI = total housing costs ÷ monthly income. Total DTI = (housing costs + other loans) ÷ monthly income.
- Mortgage payments use the standard fixed-payment (amortizing) formula with the APR you enter.
- Affordable loan amount is back-calculated from your DTI target to a maximum monthly mortgage payment, then converted to a loan amount. Down payment converts that loan amount into a home price.
For planning and education only. Actual lender rules, taxes, and insurance may differ; results are not a credit decision.
FAQ
What is a healthy DTI ratio for a mortgage?
Many lenders look for a total debt-to-income (DTI) ratio under 36–43%. Use this tool to keep a comfortable buffer for taxes, maintenance, and unexpected costs.
How are mortgage payments calculated here?
Payments are estimated with the standard fixed-payment (amortizing) loan formula. If APR is 0, the payment is simply principal divided by the number of months.
How do down payment amount and percentage change the result?
If you enter a down payment amount, the affordable home price equals the affordable loan amount plus that down payment. If you enter a percentage, the home price is sized so that percentage matches your down payment.
Does this send my numbers to a server?
No. Everything runs in your browser. Share your setup only when you click “Copy URL”.
Comments
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