Quick Answer
DTI is your total monthly debt plus your proposed housing payment divided by your gross monthly income. FHA allows up to 57%, conventional up to 50%, and VA has no set maximum. Run the math before you shop, because the ratio sets your price ceiling. Ask Patrick how calculating your debt-to-income ratio would apply to your situation.
The money problem is the ceiling the lender puts on your debt: your debt-to-income ratio decides how much house you can afford before you ever tour a home. Knowing your DTI before you shop is how you shop with power, Patriot Nation.
Your DTI is the percentage of your gross monthly income that goes toward debt payments, including your proposed housing payment. Add up your monthly debts, car loans, student loans, credit card minimums, personal loans, plus your proposed PITI of principal, interest, taxes, and insurance, then divide by your gross monthly income.
Maximum DTI varies by loan type: FHA allows up to 57%, conventional up to 50%, and VA has no set maximum. The lower your DTI, the more room you have in the approval.
Step-by-Step Calculation
Add up every monthly debt payment, including car loans, student loans, credit card minimums, and personal loans, then add your proposed housing payment and divide by your gross monthly income.
The meaning: the calculation is arithmetic, not opinion. Total monthly debt divided by gross monthly income, expressed as a percentage.
The money consequence: the result is the number that sets your approval ceiling, so running it early tells you which price range to shop.
The real-world play: I run this with every buyer before showings start. Knowing the ceiling saves weeks of touring homes that were never going to fit.
Example
A household earning $84,000 a year makes $7,000 a month. At a 38% front-end ratio, the maximum housing payment is $2,660, which has to cover principal, interest, taxes, insurance, HOA dues, and mortgage insurance.
The meaning: the example shows how the ratio turns income into a payment ceiling. Every dollar of the housing payment must fit inside the line.
The money consequence: property taxes and insurance are part of the payment, not a surprise on top of it, which is why the same house costs different amounts in different counties.
The real-world consequence: buyers who skip this math discover at the lender's desk that the house they love does not fit the payment they can carry. Run it first.
What Debts to Include
Include car loans, student loans, credit card minimums, personal loans, and any other recurring debt. The proposed housing payment includes principal, interest, taxes, and insurance.
The meaning: the lender counts every recurring obligation, because every one of them competes with the mortgage for your monthly income.
The money consequence: a car payment or student loan that you think of as separate is part of the same ratio, and it shrinks the house you can buy.
The real-world play: before you shop, list every monthly debt. The list is the honest picture of your buying power.
Front-End vs Back-End
The front-end ratio is your housing payment alone against your income. The back-end ratio adds all your other debts. Lenders watch both, and the back-end is usually the binding one.
The meaning: two ratios, two questions. Can you afford the house, and can you afford the house plus everything else you owe?
The money consequence: most buyers hit the back-end limit first, because car loans and student loans stack on top of the housing payment.
The real-world play: I calculate both for every client. The back-end number is the one that usually decides the approval, so know it cold.
By Loan Type
Maximum DTI varies by program: FHA allows up to 57%, conventional up to 50%, and VA has no set maximum. Higher DTI limits come with compensating factors.
The meaning: each loan program sets its own debt ceiling, and the ceiling changes which program fits your file.
The money consequence: a DTI that misses conventional can still fit FHA, and the program choice changes your rate, your insurance, and your cash to close.
The real-world consequence: do not assume your DTI disqualifies you. The program matters as much as the number, and that is the conversation to have with your loan officer.
How to Improve DTI
Pay down revolving debt, extend an installment loan's term, or add a co-borrower's income. Every dollar of debt removed and every dollar of income added lowers the ratio.
The meaning: DTI is a fraction, and you can improve either side. Less debt or more income both move the number.
The money consequence: a lower DTI can move you into a better program and a better rate, which is worth real money over the loan.
The real-world play: pay the credit cards down first, because revolving debt is the fastest DTI to move, and let the ratio open the door to more house.
Ask Patrick about calculating your debt-to-income ratio
Get a straight answer on calculating your debt-to-income ratio and how it applies to your situation.
