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Mortgage Affordability

Calculate your maximum purchase price based on income, debts, and down payment.

Annual Household Income ($)

Monthly Debts ($)

Car, student loans, credit cards, etc.

Down Payment ($)

Interest Rate (%)

Property Tax Rate (%)

Montgomery Co. avg: ~2.2%

Conservative

28/36 DTI Rule

$259,746

~$1,983/mo housing

Most financially comfortable option

31/43 DTI Rule

$284,784

~$2,196/mo housing

Good balance of home and lifestyle

33/50 DTI Rule

$301,475

~$2,338/mo housing

Tight budget - proceed with caution

• 28/36 Rule (Conservative): Max 28% of gross income on housing, 36% total debt.

• 31/43 Rule (Comfortable): FHA-style limits, more flexibility.

• 33/50 Rule (Stretch): Absolute maximum - leaves less room for savings.

• Housing cost includes principal, interest, property taxes (~2.2% in Montgomery County), and insurance.

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