Choosing between an FHA 203(b) loan and a Conventional 97 loan is the single most consequential financing decision most first-time buyers make. Both allow down payments as low as 3-3.5%, but they treat mortgage insurance, credit scores, and multi-unit properties very differently — and those differences can swing your monthly payment by hundreds of dollars.
What Is the FHA 203(b) Loan?
The FHA 203(b) is the most commonly used FHA program. It is a government-insured loan designed for buyers with moderate credit and limited savings. Key features:
- Minimum down payment: 3.5% of the purchase price (with a 580+ credit score)
- Minimum credit score: 580 for the 3.5% option; 500-579 requires 10% down
- Upfront Mortgage Insurance Premium (UFMIP): 1.75% of the loan amount, added to the balance
- Annual MIP: roughly 0.45%-0.55% of the loan balance per year, paid monthly
- Debt-to-income flexibility: lenders often allow DTI ratios up to 45-50% with compensating factors
The defining trait of FHA financing is that annual MIP usually lasts for the life of the loan unless you put at least 10% down, in which case it ends after 11 years. The only way to remove it earlier is to refinance.
What Is the Conventional 97 Loan?
The Conventional 97 is a Fannie Mae-backed program that allows a 3% down payment on a conventional (non-government) mortgage. Key features:
- Minimum down payment: 3% for a primary residence (at least one borrower must be a first-time buyer)
- Minimum credit score: typically 620
- Private Mortgage Insurance (PMI): required below 20% down, but it is cancellable
- PMI removal: automatic at 78% LTV, and you can request removal at 80% LTV or once you hit the midpoint of your amortization schedule
Because PMI can be removed, the Conventional 97 is often cheaper over a 5-10 year holding period even when its starting rate is slightly higher.
Side-by-Side Comparison
| Feature | FHA 203(b) | Conventional 97 |
|---|---|---|
| Minimum down payment | 3.5% | 3% |
| Minimum credit score | 580 (3.5% down) | 620 |
| Upfront fee | 1.75% UFMIP (financed) | None |
| Monthly insurance | MIP, ~0.45-0.55%/yr | PMI, ~0.3-1.0%/yr |
| Insurance removable? | Only with 10%+ down (after 11 yrs) or refinance | Yes, at 20-22% equity |
| 2-4 unit eligibility | Yes, with self-sufficiency test on 3-4 units | Limited; stricter reserves and DTI |
| Seller concessions | Up to 6% | Up to 3-9% depending on down payment |
Worked Example: $350,000 Purchase
Assume a 30-year fixed rate of 6.5% and a $350,000 purchase price.
FHA 203(b) with 3.5% down ($12,250):
- Base loan: $337,750
- UFMIP (1.75%): $5,911 → total loan: $343,661
- Principal & interest: ~$2,172/month
- Annual MIP (0.55%): ~$157/month
- Total insurance-inclusive P&I + MIP: ~$2,329/month
Conventional 97 with 3% down ($10,500):
- Loan: $339,500
- Principal & interest: ~$2,146/month
- PMI (est. 0.6%/yr): ~$170/month
- Total P&I + PMI: ~$2,316/month
The monthly payments are nearly identical — but the conventional borrower's PMI disappears around year 8-10, while the FHA borrower keeps paying MIP forever (unless they refinance). Over a decade, that is roughly $15,000-$20,000 in extra insurance costs on the FHA loan in this scenario.
Which Loan Is Best for House Hackers?
If you are buying a duplex, triplex, or fourplex to house hack, FHA is usually the more accessible path:
- FHA allows 3.5% down on 2-4 unit properties you occupy, while most conventional low-down-payment programs cap out at 2 units or require much higher down payments on 3-4 units.
- FHA underwriting is more forgiving of the income complexity that comes with rental units.
- However, on 3-4 unit FHA purchases you must pass the self-sufficiency test: 75% of the appraiser's market rent estimate must cover the full PITI mortgage payment.
If you have a 640+ credit score, stable income, and are buying a single-family or small duplex, run the numbers on the Conventional 97 first — the cancellable PMI usually wins long-term.
The Bottom Line
Choose FHA 203(b) if your credit score is below 640, your savings are thin, or you are buying a 3-4 unit property with an FHA loan. Choose Conventional 97 if you qualify, because cancellable PMI and no upfront 1.75% fee make it cheaper over time.
Before you commit, model both scenarios with our First-Time Homebuyer Mortgage Calculator, which automatically applies FHA UFMIP, annual MIP, and conventional PMI drop-off so you can see the true lifetime cost of each option.