Key takeaway640 clears GUS automated underwriting, faster approvals, higher DTI tolerance (up to ~41%+ with factors), minimal overlays.
What concretely changes at 640
- 640 clears GUS automated underwriting, faster approvals, higher DTI tolerance (up to ~41%+ with factors), minimal overlays.
- The full USDA value proposition is unlocked: 0% down, 1% upfront fee, 0.35% annual fee, the cheapest government financing for eligible areas.
- Files move at retail speed; the manual-underwriting ordeal is behind you.
- Remaining gates are income limits and area eligibility, pure logistics, not credit.
Requirements at this band
| GUS | Automated approval at 640 |
|---|---|
| Down payment | 0% |
| DTI | Up to ~41%+ with automated approval |
| Fees | 1% upfront + 0.35%/yr |
Figures are typical market ranges as of October 2026. Actual terms depend on the lender, your credit, the property and the program, and are confirmed on your Loan Estimate or term sheet.
Smart moves at 640
- At 640, USDA is often the best loan in lending for eligible buyers, verify eligibility before assuming FHA.
- New construction and manufactured homes (qualifying) work with USDA.
- Keep the score through closing; GUS findings assume the credit picture holds.
FAQ
Is USDA better than FHA at 640?
In eligible areas with income under 115% AMI: yes, 0% down and cheaper fees. Outside those boxes, FHA.
Can I refinance USDA later?
Yes, including USDA streamlined options; conventional refinance works once you have equity.
Does 640 help with the income limit?
No, the 115% AMI cap is independent of score.