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Home Loan Pre-Approval Calculator

Translate income, monthly debts, and housing costs into a rough maximum loan and price range using front-end and back-end ratio caps you can adjust. This answers the pre-approval mindset—“about how much could I borrow?”—not a mortgage payment-only calculator.

Educational estimate only. Lenders use verified income, credit reports, actual taxes/insurance quotes, and PMI provider grids. You may qualify for more or less than shown.

Your profile

Gross annual income

Monthly non-housing debt (cars, cards, student loans, etc.)

Front-end cap (%)

Back-end cap (%)

Loan assumptions

Note APR (%)

Term

Planned down payment (%)

Below 20% we add a simple PMI placeholder (~0.5% of loan per year) into the housing payment.

Housing cost placeholders

Annual property tax

Annual insurance

Monthly HOA

Estimated range

Pre-approval vs. payment calculators

A standard mortgage calculator starts from price and outputs payment. A home loan pre-approval calculator works backwards from what underwriters care about: stable income, minimum monthly obligations, and how much of your paycheck can safely go to housing. That is why this tool emphasizes debt-to-income and non-housing debts before it ever shows a loan size.

Front-end and back-end ratios

Defaults of 28% front and 36% back mirror common planning guidelines. Aggressive programs may permit higher back-end ratios with strong credit or compensating factors; conservative buyers may want to lower the sliders to leave margin for savings and repairs.

PMI placeholder

When the down payment is under 20%, private mortgage insurance often applies. We apply a flat annual rate against the loan for budgeting orientation only—your loan officer will quote exact PMI using insurer rate cards and your FICO score.