Debt-to-Income Ratio Calculator
Lenders will calculate this number about you. Far better to calculate it yourself first.
What This Calculator Does
Your housing payment and your total monthly obligations are each divided by gross monthly income to produce the front-end and back-end ratios lenders rely on. Both are measured against the traditional 28/36 benchmark, and the calculator then shows how much additional room the stretch bands some programs allow — generally in the 43-50% range — would open up.
Who Is This For
Made for buyers preparing for pre-approval, borrowers carrying student loans or car payments who want to see the effect, and anyone in Miami whose housing costs include association dues and Florida insurance premiums that push the ratio higher than expected.
How It Works
Supply your gross monthly income, the housing payment you are targeting including taxes, insurance and association dues, and your other recurring monthly debt payments. The calculator returns both ratios and shows where they fall against typical program limits.
Frequently Asked Questions
Where does the 28/36 rule come from?
It is the traditional benchmark: housing costs no greater than 28% of gross monthly income, and all debt payments together no greater than 36%. Conservative by current standards, it nevertheless remains the cleanest test of whether a payment is genuinely comfortable rather than merely approvable.
How far will lenders stretch in practice?
Beyond 36%. Depending on the program and your compensating factors — reserves, credit profile, down payment — approvals commonly reach into the 43-50% range. Where you land inside that band is a lender and program question rather than a universal rule you can look up.
Which obligations get counted?
Recurring obligations appearing in your credit file: mortgage or rent, car payments, student loans, minimum credit card payments, personal loans, child support and alimony. Utilities, groceries, and general living costs are left out, which is exactly why an approvable ratio and an affordable one are not the same thing.
Which income can be used?
Gross income before taxes, documented and stable. Salary, self-employment income averaged over time, and a reliable bonus or commission history typically qualify. Income you cannot document in the manner the lender requires does not improve the ratio, however real it may be.
Why does Miami push my ratio higher?
Because the housing side takes in property taxes, homeowners insurance, and condo or HOA dues — and in South Florida the latter two carry unusual weight. Two identical incomes buying identically priced homes can land in different bands purely on insurance and association costs.
What improves the ratio fastest?
Retire the smallest recurring payments rather than the largest balances, since the ratio counts monthly obligations and not total debt. Clearing a single car payment moves the number further than shaving down a large balance. And leave new accounts alone while you are in process.