How to use this calculator
Start by entering your gross monthly income from all sources, including salary, bonuses, side income, rental income, and any other regular earnings. Use pre-tax amounts since that is what lenders evaluate.
Next, enter your housing costs (mortgage or rent, property taxes, homeowners insurance, and HOA fees) and your other monthly debt payments (car loans, student loans, credit cards, personal loans, and support obligations).
The calculator instantly shows your front-end DTI (housing only) and back-end DTI (all debts), along with a visual gauge and qualification status for major loan types.
Understanding debt-to-income ratios
Your debt-to-income ratio is one of the most important numbers lenders look at when deciding whether to approve you for a mortgage or other major loan. It measures how much of your monthly gross income is already committed to debt payments.
The front-end ratio (also called the housing ratio) only considers housing related costs. Most conventional lenders want this at or below 28%. The back-end ratio includes all monthly debt obligations and is typically the more restrictive number lenders use for approval decisions.
A lower DTI signals to lenders that you have enough financial breathing room to handle a new payment. Even if you qualify at a higher ratio, staying below 36% total DTI gives you a buffer for unexpected expenses and generally earns you better interest rates.
Frequently asked questions
What is a debt-to-income ratio?
Your DTI ratio is the percentage of gross monthly income that goes toward debt payments. Lenders use this number to determine whether you can comfortably take on additional debt such as a mortgage.
What is the difference between front-end and back-end DTI?
Front-end DTI only includes housing costs (mortgage, taxes, insurance, HOA). Back-end DTI includes housing plus all other debt payments like car loans, student loans, credit cards, and support obligations.
What DTI do I need to qualify for a mortgage?
Conventional loans prefer 28% front-end and 36% back-end. FHA loans allow up to 31% front-end and 43% back-end. VA loans have no front-end limit and generally allow up to 41% back-end, with some flexibility up to 50% for strong applicants.
How can I lower my DTI ratio?
Pay off existing debts (especially small balances with high minimums), increase your income, avoid taking on new debt before applying, or refinance existing loans to reduce monthly payments. Even eliminating one small payment can make a meaningful difference.
Does DTI include utilities or groceries?
No. DTI only counts debts that appear on your credit report or are required disclosures: mortgage, car loans, student loans, credit card minimums, child support, and alimony. Everyday expenses like utilities, food, and phone bills are not included.