Readiness
Underwriting sees six of your obligations. Your life has forty.
Approval is calculated from the debts that appear on your credit report. It does not know about childcare, tuition, medical costs, the car you plan to replace, or the retirement contribution you refuse to reduce. That is not a flaw in underwriting — it is a boundary, and it is your job to apply the rest.
At a glance
The maximum loan a lender will extend based on verified income and the monthly obligations visible on your credit report.
The payment that fits your actual budget, including everything that never reaches a credit bureau, while preserving savings and reserves.
| Factor | What You're Approved For | What You Can Afford |
|---|---|---|
| Based on | Verified income and reported debts | Your complete monthly reality |
| Includes childcare | No | Yes |
| Includes retirement saving | No | Yes |
| Includes travel and lifestyle | No | Yes |
| Accounts for maintenance | No | Yes — budget 1%–2% of value |
| Who sets it | The lender | You |
The approval letter is a ceiling, not a target. Nobody at the closing table is responsible for the difference except you.
Plain English first, then the rule as it is published, then what it means for your file.
“The lender must include all monthly liabilities appearing on the credit report and any other recurring monthly debt obligations disclosed by the borrower.”
Daycare, tuition, and medical costs do not appear on your credit report and are therefore invisible to your approval — but very visible in your bank account.
“Fannie Mae's maximum total debt-to-income ratio is 50% for loans underwritten through Desktop Underwriter.”
Half of your gross income can legally go to debt. That is the outer limit of what is permitted, not a recommendation about what to do.
Use the approval amount to define what is possible and to satisfy sellers that you can perform.
Use your affordability number to decide what you will actually offer.
Set your own ceiling before you tour a single home. Buyers who shop to the approval letter are the ones who discover a year later that the house owns them.
Because they are measuring against documented obligations and program limits, not your household priorities. The rules are the same for everyone; your budget is not.
A common guideline is around 28% of gross income for total housing, though the right number depends on your other commitments.
Yes, and give them your number rather than the approval amount. Otherwise you will be shown homes above your comfort line.
Every rule stated on this page is traceable to the agency handbook that governs it. Guidelines change — confirm anything time-sensitive with a licensed loan officer before acting on it.
Reviewed by Brian Mix, licensed loan officer (NMLS #111175) · Last checked July 2026.
Ask RED. It can walk through your specific numbers, explain any term on this page, and point you to the guide that goes deeper — no credit pull, no sales pressure.
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