Lenders use your debt-to-income ratio (DTI) to judge whether you can afford new borrowing. Add up your monthly debt payments, enter your gross monthly income, and this calculator shows your DTI as a percentage with a plain-English rating — instantly and privately.
How to Use
- Enter your gross monthly income — before tax and deductions.
- Add each monthly debt payment: housing, car loans, credit cards, student loans and anything else.
- Click Calculate DTI to see your ratio, total debts and rating.
- Use the rating to gauge affordability before applying for new credit.
Key Features
- Lender-style DTI — monthly debts divided by gross monthly income, the way lenders calculate it.
- Plain-English rating — from Excellent to High, with a colour-coded badge.
- Itemised debt inputs — housing, vehicles, cards, student loans and other debts.
- Instant results — ratio, total monthly debts and guidance in one view.
- 100% private — runs entirely in your browser; nothing is sent or stored.
FAQs
What is a good debt-to-income ratio?
Most lenders prefer 36% or less, and 43% is a common ceiling for mortgage applications. The lower your DTI, the more comfortable new borrowing should be.
Should I use gross or net income?
Use gross income — your pay before tax, National Insurance and other deductions. That matches how lenders work out the ratio.
Does it include everyday living costs?
No. DTI counts debt payments only, not food, utilities or other living expenses. Lenders use the same definition, so the figure is comparable.
Is this financial advice?
No. This calculator is a planning aid, not advice. Speak to a qualified adviser or your lender before making borrowing decisions.
Related Tools
Try these related tools: Mortgage Affordability Calculator, Debt Payoff Calculator and Loan Comparison Calculator.