Bottom line: Debt-to-income ratio (DTI) is your total monthly debt payments divided by your gross monthly income. Mortgage lenders want a DTI below 43–45%. A high DTI can prevent loan approval even if your credit score is good. Reducing it requires paying down debt, increasing income, or both.
Quick answer
Your debt-to-income ratio is all of your monthly minimum debt payments divided by your gross monthly income. If you pay $2,600 a month toward debts and earn $7,000 before taxes, your DTI is 37.1%. Lenders use it to judge whether your income can support a new loan: below 36% is strong, 43 to 45% is the ceiling for most mortgage programs, and getting a HELOC usually requires staying under 43% as well. You can calculate yours in about a minute with our DTI calculator. If the number is too high, paying down a balance or documenting more income are the two levers that move it.
Your credit score and your DTI are the two most important numbers in loan qualification. Most people know their credit score. Most people do not know their DTI, and it surprises them in the mortgage application process. If DTI is the issue, see how to get out of credit card debt or debt consolidation for ways to bring the number down before you apply.
How to Calculate Your DTI
Step 1: Add up all monthly minimum debt payments:
- Mortgage or rent (for existing housing)
- Car loans
- Student loans (monthly required payment)
- Minimum credit card payments
- Personal loans
- Child support or alimony (if court-ordered)
Step 2: Add the proposed new payment (for the loan you are applying for).
Step 3: Divide total monthly debt payments by gross monthly income (before taxes).
Example:
- Car loan: $400/month
- Student loan: $250/month
- Credit card minimums: $150/month
- Proposed mortgage: $1,800/month
- Total monthly debt: $2,600
- Gross monthly income: $7,000
- DTI = $2,600 ÷ $7,000 = 37.1%
What Lenders Require
Conventional loans (Fannie/Freddie): Maximum 45% DTI (sometimes up to 50% with compensating factors like high credit score or large reserves).
FHA loans: Maximum 43% DTI (can go higher in some cases with other strong factors).
VA loans: No hard limit but lenders typically prefer below 41%. VA uses residual income analysis as a complement.
USDA loans: Maximum 41% back-end DTI (41% including housing).
Personal loans: Most lenders want DTI below 36–43%, though some lend to higher DTIs at higher rates.
- Lenders use two DTI ratios: 'front-end' (housing costs only ÷ income) and 'back-end' (all debt payments ÷ income). The back-end ratio is what most lenders cite as the limit.
- Student loans on income-driven repayment plans are counted by lenders at the required monthly payment. If your IDR payment is $0 or $50, that is what goes into the DTI calculation, not the full standard payment. See our [student loan repayment plans](/learn/student-loan-repayment-plans) guide for how each plan sets that payment.
- Co-signer income can lower your DTI from the lender's perspective, though the co-signer takes on the debt liability. This is a legitimate strategy for first-time homebuyers with family support.
Front-End vs. Back-End DTI
Front-end DTI: Housing costs only (mortgage principal + interest + taxes + insurance + HOA) divided by gross income. Conventional lenders typically want this below 28%.
Back-end DTI: All monthly debt payments including housing divided by gross income. This is the standard limit lenders discuss (43–45% for most programs).
How to Improve Your DTI
Pay down debt before applying. Eliminating a car loan or paying off a credit card reduces monthly debt payments and directly improves your DTI. Even small reductions matter. Card balances are usually the first target because the average credit card APR runs near 24.00%, so retiring them improves DTI and saves the most interest at the same time.
Increase income. A raise, promotion, or documented side income that you can show 12–24 months of history can raise your qualifying income.
Avoid taking on new debt before applying. A new car loan or credit card minimum payment before a mortgage application can push you over the qualifying DTI.
Refinance existing loans. Lowering the rate on a personal loan or auto loan reduces the monthly payment and lowers DTI (though extending a loan term also increases total interest, so run the math). A balance transfer card can serve a similar purpose for credit card debt if you qualify for a 0% promotional rate.
Don't close credit cards. Closing cards does not help DTI and may hurt your credit score by increasing utilization. Leave them open with zero balance.
DTI vs. Credit Score
These two factors address different risks for lenders. Your credit score measures how reliably you have repaid debt in the past. Your DTI measures whether your current income can support the new debt. Both must be acceptable. A high credit score does not compensate for an unacceptably high DTI, and the reverse is also true.
Know your DTI before any lender does. Target under 36% before a mortgage or HELOC application, and never add a new car loan or card payment in the six months before applying, because one new minimum payment can push you past the qualifying line.
Which move fits your situation
- Best next move
- Apply with confidence
- Why
- You are inside the strong zone for every major loan program.
- Best next move
- Pay down one loan before applying
- Why
- Eliminating a single payment can move you into approval range.
- Best next move
- Delay the application
- Why
- Pay down balances or document more income first; approval odds are poor.
- Best next move
- Consider a payoff plan or consolidation
- Why
- Cards carry the highest rates, so they are the cheapest DTI win. See how to get out of credit card debt.
- Best next move
- Document side income for 12 to 24 months
- Why
- Lenders count income they can verify with history.
- Best next move
- Confirm the counted payment
- Why
- Lenders use your required IDR payment, not the standard payment.
Not sure which debt to attack first? Money Map can rank your debts and rate gaps in one scan, and the debt payoff calculator compares payoff orders in dollars.
Quick answers
What is a good debt-to-income ratio? Below 36% is strong for most loan types. Most mortgage programs cap at 43 to 45%.
How do I calculate my DTI? Add all monthly minimum debt payments, then divide by gross monthly income. $2,600 in payments on $7,000 income is a 37.1% DTI.
Does rent count in my DTI? Yes. Your current housing payment counts, and for a new mortgage the lender swaps it for the proposed new payment.
Can I lower my DTI without paying off debt? Partially. Documented income increases, refinancing to lower payments, or a qualifying co-signer all help. Paying down balances is the most durable fix.
Sources
- Consumer Financial Protection Bureau, what is a debt-to-income ratio for the standard definition and calculation.
- HUD, qualifying for a mortgage for how DTI is used in mortgage qualification.
DTI requirements vary by lender, loan type, and program; confirm specific requirements with your lender before applying. Rates referenced on this page were verified on July 9, 2026, and live figures may update automatically through SwitchWize rate tokens. This article is educational information, not individualized financial advice.
Frequently Asked Questions
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