Debt-to-Income Ratio Calculator

Your debt-to-income ratio is one of the most important numbers in mortgage lending. Lenders use it to decide whether you qualify for a conventional loan and how much you can borrow.

A debt-to-income ratio calculator helps you understand your financial strength as a borrower. Lenders want to see that your monthly debt payments stay below 43% of your gross monthly income. Use this calculator to add up your debts, enter your income, and see your DTI instantly. Knowing your DTI before you apply gives you time to improve it if needed.

What Is Debt-to-Income Ratio?

Debt-to-income ratio, or DTI, measures how much of your monthly income goes toward debt payments. Lenders divide your total monthly debt by your gross monthly income and multiply by 100 to get a percentage. A lower DTI shows that you have room in your budget for a mortgage payment. A higher DTI suggests you already carry a lot of debt.

Most conventional lenders want to see a DTI of 43% or lower. Some lenders approve borrowers with a DTI as high as 50%, but this usually requires excellent credit and a large down payment. Your DTI directly affects how much you can borrow and what interest rate you receive.

What Counts as Debt?

Your debt includes car loans, student loans, credit card balances, personal loans, and other monthly obligations. It also includes child support, alimony, and any mortgage payments you already make. The calculator counts only the minimum monthly payment for credit cards, not the full balance.

Your income includes your salary, wages, bonuses, and tips. It can also include rental income, business income, and retirement benefits. Lenders typically use your gross income before taxes and deductions.

Why DTI Matters for Conventional Loans

Conventional loans have stricter DTI requirements than government-backed loans. Most conventional lenders use a 43% cap, which means your total monthly debt payments cannot exceed 43% of your gross monthly income. Some lenders go up to 50% for well-qualified borrowers, but this is less common.

Your DTI affects not just your approval but also your loan amount. If your income is $5,000 per month and your current debts total $1,500, your DTI is 30%. This leaves you room to add a mortgage payment of $1,650 per month and stay at 43%. If you had $2,000 in monthly debts, your DTI would already be 40%, leaving you only $150 for a mortgage payment.

How to Lower Your DTI

You can improve your DTI by paying down existing debt or increasing your income. Even paying off a small credit card or car loan before you apply can make a difference. Some borrowers delay applying until they finish paying off student loans or car loans.

If you cannot lower your debt right now, focus on saving a larger down payment. A bigger down payment reduces the amount you need to borrow and may qualify you for better terms.

Frequently Asked Questions

What is a good debt-to-income ratio for a mortgage?

A DTI of 36% or lower is considered excellent. Most lenders prefer to see a DTI below 43%. Anything above 50% will make approval difficult.

Does my DTI include my mortgage payment?

No, your current DTI does not include a mortgage payment. Lenders calculate how much room you have to add a new mortgage payment to your existing debts.

Can I get a conventional loan with a 50% DTI?

Some lenders approve borrowers with a DTI up to 50%, but this requires excellent credit, significant savings, and a strong application overall.

How do lenders calculate DTI?

Lenders divide your total monthly debt payments by your gross monthly income. They multiply by 100 to express it as a percentage.

Does paying off credit cards help my DTI?

Yes. Paying off credit card balances reduces your monthly debt obligations and improves your DTI immediately.

Disclaimer: This is an educational tool. Actual loan approval and DTI limits are determined by your lender, who will verify all income, assets, and debts during the underwriting process. Always consult with a qualified mortgage professional for personalized advice.