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This is a scenario tool for educational purposes only and does not constitute an official pre-approval or a rate quote. It starts with the published sample rate and uses whatever rate you leave in the field. Calculations use a 43% back-end DTI cap and monthly principal & interest only — actual approval amounts also depend on credit, property taxes, insurance, PMI, loan program, lender underwriting, and other factors. Contact a licensed loan officer for an official pre-approval letter.
Calculator results are estimates for planning, not a loan approval, commitment, rate lock, or Loan Estimate.
What the pre-approval estimator calculates
This tool estimates the maximum loan amount you might be pre-approved for, based on your annual household income, monthly debt payments, the down payment you have saved, and a loan term and interest rate you enter to test.
It's built to give you a realistic number to walk into house-hunting with — before you go through a formal pre-approval, which requires document verification, a credit pull, and underwriting review.
The output is an estimate, not a commitment. A real pre-approval letter comes from a licensed lender after reviewing your actual income documentation, credit report, assets, and the specific loan program you qualify for.
How to use it, step by step
- 1Enter your annual household income — combine both incomes if you're applying with a co-borrower.
- 2Enter your current monthly debt payments, the same way you would for a DTI calculation: loans, minimum card payments, and other recurring obligations.
- 3Enter the down payment you have saved and ready to use.
- 4Enter a loan term and an interest rate to test — the calculator will not estimate without a rate entered, since payment size depends directly on it.
- 5Review the estimated maximum loan amount and maximum home price, then rerun with a different rate or term to see the range.
A worked example
Example inputs
- Annual household income
- $120,000
- Monthly debt payments
- $500
- Down payment saved
- $60,000
- Interest rate (example only)
- 6.5%
Result
At $10,000 in monthly gross income, guideline debt ratios leave roughly $2,600–$2,850 available for a total housing payment after the existing $500 in debt.
At the illustrative 6.5% rate on a 30-year term, that payment range supports a loan in the neighborhood of $340,000 once estimated tax and insurance are backed out — plus the $60,000 down payment, for an estimated maximum home price near $400,000.
The 6.5% rate above is an illustrative example input only, not a current quote or pre-approval offer.
How to read the result
Use this number as a planning range, not a number to spend to the dollar. Leave room between your estimated maximum and your actual offer price for negotiating leverage and monthly comfort.
The estimate is sensitive to the rate you enter — run it at a couple of different rates to understand the range rather than anchoring on one number.
A formal pre-approval can come back higher or lower than this estimate depending on your actual credit score, verified income, debt, and the specific loan program's guidelines.
Common mistakes
- Treating the estimated maximum as your offer price. Sellers and agents generally expect some negotiating room, and a maxed-out offer leaves no cushion if costs come in higher than planned.
- Skipping the interest rate field or guessing wildly — since payment size is directly tied to rate, an unrealistic rate produces a meaningless loan estimate.
- Forgetting that a formal pre-approval also checks credit score and verified documentation, both of which can move the real number up or down from this estimate.
- Not re-running the estimate after a major change — a new car loan, a job change, or a larger down payment can shift the result meaningfully.
Related guides
Frequently asked questions
No. This is a planning estimate based on the numbers you enter. A real pre-approval comes from a licensed lender after verifying your income, assets, and credit, and results in a formal pre-approval letter you can use when making offers.
Pre-qualification is typically a quick, self-reported estimate with no document verification — similar to what this calculator gives you. Pre-approval involves a credit pull and document review by a lender, and carries more weight with sellers.
Your monthly payment — and therefore the loan size a given payment can support — moves directly with the interest rate. A higher rate means a smaller loan supports the same payment; a lower rate supports a larger one.
It may be close, but it can also differ. A real pre-approval also weighs your credit score, employment history, verified assets, and the underwriting rules of the specific loan program, none of which this simplified calculator models in full.
It depends on the loan program. Conventional loans can go as low as 3% down for qualified buyers, FHA as low as 3.5%, and VA and USDA loans can offer 0% down for eligible borrowers. Enter the amount you actually have saved to get the most useful estimate.