Mortgage Housing Cost Ratio
Calculate mortgage housing cost ratio with clear inputs, formula guidance, and practical result checks.
Mortgage Housing Cost Ratio measurements
Enter your values, then calculate.
Result
How to calculate mortgage housing cost ratio
This calculator finds housing cost ratio (also called front-end DTI) by dividing monthly housing costs by gross monthly income — a key metric lenders use to assess mortgage affordability.
How the calculation works
Housing cost ratio = (Monthly housing costs ÷ Gross monthly income) × 100.
Example
$1,800 monthly housing cost on $6,000 gross monthly income: (1,800÷6,000)×100 = 30%.
Frequently asked questions
How is Result calculated?
Result = [Monthly housing costs] ÷ [Gross monthly income] × 100.
Is the Mortgage Housing Cost Ratio free to use?
Yes — every calculator on Simple Calculator Tools is free, runs in your browser, and does not require an account.
Mortgage Housing Cost Ratio
Housing cost ratio = (Monthly housing costs ÷ Gross monthly income) × 100.
Let's understand your mortgage housing cost ratio result.
Calculate a result above and this guide will help you interpret it using this calculator's own formula and explanation.
Pro Tips for Mortgage Housing Cost Ratio
- A commonly cited guideline suggests keeping housing costs at or below 28% of gross income, though specific lender requirements vary.
- Include principal, interest, taxes, and insurance (PITI) in 'monthly housing costs' for the standard, complete calculation lenders typically use.
Common Mortgage Housing Cost Ratio Mistakes to Avoid
- Calculating housing cost ratio using only the principal and interest payment while omitting property taxes and insurance, which understates the true ratio lenders actually evaluate.
When to Use This Calculator
This calculator finds housing cost ratio (also called front-end DTI) by dividing monthly housing costs by gross monthly income — a key metric lenders use to assess mortgage affordability.