Calculate your home buying power as a dual-income household with different income combinations.
Dual Income Home Affordability: Quick Reference
Rule-of-thumb multiples of gross household income (the multiples ignore the interest rate; the 28% scenarios below show what a 7.40% rate allows):
Combined Income
Conservative (3x)
Moderate (4x)
Aggressive (5x)
$100,000
$300,000
$400,000
$500,000
$125,000
$375,000
$500,000
$625,000
$150,000
$450,000
$600,000
$750,000
$175,000
$525,000
$700,000
$875,000
$200,000
$600,000
$800,000
$1,000,000
$250,000
$750,000
$1,000,000
$1,250,000
$300,000
$900,000
$1,200,000
$1,500,000
Common Dual Income Scenarios
Max home assumes 20% down, a 7.40% rate (Freddie Mac 30-year average, week of October 8, 2026), and a monthly payment (principal, interest, plus taxes and insurance at about 1% of the price a year) equal to 28% of gross income, rounded to the nearest $5,000.
Scenario 1: Both Earning Equal Salaries
Each Earns
Combined
Max Home (28% DTI)
Monthly Payment
$50,000
$100,000
$365,000
$2,330
$60,000
$120,000
$440,000
$2,800
$75,000
$150,000
$550,000
$3,500
$100,000
$200,000
$730,000
$4,670
Scenario 2: Primary + Secondary Earner
Primary
Secondary
Combined
Max Home
Monthly Payment
$80,000
$40,000
$120,000
$440,000
$2,800
$100,000
$50,000
$150,000
$550,000
$3,500
$120,000
$60,000
$180,000
$660,000
$4,200
$150,000
$75,000
$225,000
$825,000
$5,250
Scenario 3: One High Earner + One Moderate
High
Moderate
Combined
Max Home
Monthly Payment
$125,000
$45,000
$170,000
$620,000
$3,970
$150,000
$50,000
$200,000
$730,000
$4,670
$175,000
$75,000
$250,000
$915,000
$5,830
$200,000
$100,000
$300,000
$1,100,000
$7,000
How Lenders Calculate Dual Income Affordability
Factor
How It’s Calculated
Gross income
Both incomes combined
DTI (Debt-to-Income)
Total monthly debts ÷ Combined gross monthly income
Front-end DTI
Housing costs only ÷ Income (target: ≤28%)
Back-end DTI
All debts ÷ Income (target: ≤36-43%)
Credit score
Lower of two scores often used for rate
DTI Examples
Combined Income
Monthly Gross
Max Housing (28%)
Max All Debt (36%)
$100,000
$8,333
$2,333
$3,000
$150,000
$12,500
$3,500
$4,500
$200,000
$16,667
$4,667
$6,000
$250,000
$20,833
$5,833
$7,500
Impact of Existing Debt on Buying Power
Combined income: $150,000
Monthly Debt
Max Home Price
Reduction
$0
$550,000
—
$500 (car)
$550,000
$0
$1,000 (car + student loans)
$550,000
$0
$1,500 (multiple debts)
$470,000
-$80,000
$2,000
$390,000
-$160,000
At $150,000, debts up to $1,000/month fit inside the 36% total-debt limit without shrinking the 28% housing budget; above that, each extra $500/month cuts buying power by about $80,000.
WealthVieu researches and writes data-driven personal finance guides using primary sources including the IRS, Bureau of Labor Statistics, Federal Reserve, and Census Bureau.
The content on Wealthvieu is for informational purposes only and should not be considered financial, tax, or investment advice. Consult a qualified professional before making financial decisions. Full disclaimer · Editorial policy
📬 Sign up for our newsletter
New guides and calculator updates from WealthVieu, by email.
No spam, unsubscribe anytime.
📬
Sign up for the WealthVieu newsletter
New guides and calculator updates, by email. No spam, unsubscribe anytime.