US Home Affordability & DTI Calculator
Calculates your maximum purchasing power using real-world Fannie Mae & Freddie Mac conventional lending limits (28% Front-End & 43% Back-End DTI).
Includes 7.5% down payment ($30,000)
Housing payment ($2,216) + monthly debts ($450) vs gross income ($7,917/mo).
*Estimates reflect standard 2026/2027 Fannie Mae/Freddie Mac conforming guidelines. Actual qualification depends on credit score, assets, and lender approval.
How to Use This Affordability & DTI Engine
Follow these four simple steps to reverse-engineer your maximum budget before meeting with loan officers.
Enter Household Income
Use your gross pre-tax income including salary, stable bonuses, and documented co-borrower wages.
Audit Monthly Debts
Tally minimum monthly card payments, auto loans, and student loans. Do NOT include groceries or utilities.
Calibrate Down Payment
Test savings reserves. Every additional $10,000 down directly expands your maximum purchasing capacity.
Monitor Health Gauge
Aim for green (<36%) for the most competitive lender rates, or yellow (36%โ43%) for standard conventional approvals.
Frequently Asked Questions: Home Affordability & DTI
Grounded in current FHFA conforming guidelines, Fannie Mae standards, and credit underwriting benchmarks.
Up to $832,750 baseline conforming loan purchasing power
Higher limits apply in designated high-cost markets up to $1,249,125.
How to Maximize Your Approval & Use This Tool
Mortgage underwriting evaluates risk mathematically. Follow these four actionable steps to discover your maximum purchase price and fine-tune your borrowing profile.
Input Gross Pre-Tax Household Income
Include all verifiable income: full-time W-2 wages, consistent 2-year average self-employment earnings, and co-borrower wages.
Audit Monthly Debts
Tally minimum monthly card payments, auto loans, and student loans. Do NOT include groceries or utilities.
Calibrate Down Payment & Test Rates
Test savings reserves. Every additional $10,000 down directly expands your maximum purchasing capacity.
Monitor Health Gauge
Aim for green (<36%) for prime lender rates, or yellow (36%โ43%) for standard conventional approvals.
Compare Top 4 US Mortgage Programs
Evaluate monthly obligations, minimum down payments, and lifetime wealth accumulation based on a $400,000 home purchase.
30-Year Conventional
Conforming baseline up to $832,750 with cancellable PMI.
15-Year Conventional
Save over $260k in interest and build rapid equity.
30-Year FHA Loan
Flexible credit criteria (580+) and higher DTI allowance.
30-Year VA Loan
For veterans & active duty. No monthly PMI insurance.
15-Year Saves $260,000+
If monthly cash flow permits, 15-year fixed loans build equity 2.4x faster.
Low & Zero Down Options
VA and FHA remove down-payment barriers for qualifying borrowers.