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Affordability
Debt-to-Income Calculator
Debt-to-income is the ratio underwriters care about most. It compares your monthly obligations to your gross monthly income, and it's the reason two buyers with identical incomes get very different approvals.
The useful insight isn't the number itself, it's seeing which specific debt is costing you the most borrowing power.
Your numbers
Child support, personal loans, co-signed debt.
Your results
Back-end DTI
38%
Within typical conventional guidelines
- Front-end (housing) DTI
- 27.8%
- Total monthly debt
- $3,000
- Non-housing debt
- $800
- Room left at a 45% ceiling
- $555Additional monthly payment you could absorb
- DTI without the car payment
- 32.3%
- DTI without credit cards
- 36.3%
What happens if you change this
Your back-end DTI is 38%, inside the guideline most conventional approvals use. Paying off the car payment alone would bring it to 32.3% and free up roughly $450 of monthly borrowing capacity, worth about $71,100 in additional purchase price at current rates. You currently have $555 of monthly room before hitting 45%.
Keep these numbers
Your results are yours already. If it helps, send them to yourself, or have Corie look at the same scenario and tell you what she would change.
Related calculators
- Home Affordability CalculatorWork backwards from your income and comfortable payment to the price range that actually fits.
- Mortgage Payment CalculatorSee your full monthly payment: principal, interest, taxes, insurance and mortgage insurance, not just principal and interest.
- Cash to Close CalculatorThe single number that matters most at the start: how much you actually need in the bank.
- FHA vs Conventional CalculatorCompare both programs on the same house, payment, cash required, and what mortgage insurance really costs over time.
Questions people ask
- What DTI do I need to qualify?
- Many conventional approvals run to about 45%, with higher allowed for strong files. FHA is often more flexible. Your credit, reserves and down payment all influence the ceiling.
- Do utilities and groceries count?
- No. Only debts that appear on your credit report plus obligations like child support. Living expenses aren't included in DTI.
Estimates for education only, not a loan approval, rate quote, or commitment to lend. Actual figures depend on credit, property, program guidelines, and market conditions at the time of lock. Corie Adams · NMLS #1875205 · Network Funding, LP · NMLS ID #2297 · Equal Housing Opportunity.
In plain English
It measures the share of your monthly income already spoken for, which is the number underwriting cares about most.
When to use it
- Before applying, to see whether a debt should be paid off first
- When deciding between paying down a card or saving more down payment
- If you were declined elsewhere and want to know why
Common mistakes
- Using take-home pay
- Lenders use gross income before taxes and deductions.
- Including household expenses
- Groceries, utilities and phone bills are not part of the calculation. Credit obligations are.
- Paying off the wrong debt
- Retiring a small balance with a large payment helps the ratio more than clearing a large balance with a small one.
Recommended next steps
Turn the estimate into real numbers.
A pre-approval replaces the assumptions above with your actual income, credit, and the terms available to you today.
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Other numbers worth running.
Affordability
Home Affordability Calculator
Work backwards from your income and comfortable payment to the price range that actually fits.
Payment
Mortgage Payment Calculator
See your full monthly payment: principal, interest, taxes, insurance and mortgage insurance, not just principal and interest.
Costs
Cash to Close Calculator
The single number that matters most at the start: how much you actually need in the bank.
Comparison
FHA vs Conventional Calculator
Compare both programs on the same house, payment, cash required, and what mortgage insurance really costs over time.
After the math
Where this number leads.
- Learning pathAffordability pathThe education behind the range.
- Community guidesLancaster County community guidesHousing stock, schools, commutes, and what daily life actually feels like.
- PlaceLiving in PennsylvaniaCity guides for people deciding where the next chapter should happen.
- Case studiesHomeownership storiesReal Pennsylvania files, from the first question to the closing table.