How to Choose a Conventional Loan or FHA by Credit, DTI and Time Owned

The Quick Read: Your credit score, your debt load and how long you’ll keep the loan all push the decision, and they push in different directions. FHA tends to fit lower credit or a heavier debt load. Conventional tends to fit stronger credit with room in your budget. The deciding factor is often how long the mortgage insurance lasts versus how long you’ll own the home.

Who This Is For

You’re buying a home you’ll live in, one to four units, as your principal residence. That’s the lane here. FHA is owner-occupied only, and occupancy is what sets your leverage.

The Three Variables, Plainly

Credit is the score a lender uses to decide. On FHA that’s the middle of your three bureau scores.

DTI is your monthly debts divided by your monthly gross income. Lenders look at it twice: housing payment alone, and housing plus every other debt.

Time owned means two things people mix up. One is how long you’ll keep this particular loan. The other is how long you’ve lived in the home if you refinance later. Both change the answer.

How Credit Changes the Choice

Credit drives eligibility first and cost second. Lower credit usually points toward FHA. Strong credit usually points toward conventional. The middle is where you have to run the comparison.

On eligibility, across the wholesale programs Lendmire places FHA files with, maximum financing is 96.5% of value. That means a 3.5% minimum investment, starting at a decision score of 580. HUD’s own policy goes lower: scores of 500 to 579 can be financed but are capped at 90% LTV. The brokerage’s network doesn’t reach below 580, so treat 580 as the working floor. Some lenders set their own floor even higher. That’s why two lenders can give you different answers on the same file.

HUD also uses the median of three scores when three are reported. If only a non-occupying co-borrower has a score, the file has to be manually underwritten. That’s a stricter review.

Conventional works differently. Fannie Mae has removed the fixed minimum score from its automated system for new files, so the system now weighs a wider mix of risk factors. That doesn’t mean low scores sail through. Manually underwritten loans still follow a matrix of score and reserve requirements, and lenders can set their own minimums. Final terms depend on the lender’s guidelines, the property type, and the borrower’s complete credit picture.

On cost, the gap is about how insurance is priced. The CFPB explains that FHA mortgage insurance is required on every FHA loan and costs the same regardless of credit score. Conventional private mortgage insurance (PMI) is risk-priced, so your score and down payment move it a lot.

Here’s the practical read:

A weaker-credit borrower may find FHA’s flat schedule cheaper. A strong-credit borrower with a solid down payment often finds conventional cheaper. That pattern holds as a tendency, not a promise. Your actual quotes decide it.

How DTI Changes the Choice

FHA is built to stretch further on debt. Conventional rewards low debt and strong reserves. If your DTI is high and your credit is middling, FHA usually gives you the path.

Here’s the math with no dollars. Say your new housing payment takes 28% of your gross income. Car loan, student loans and card minimums take another 12%. Your total is 40%. That’s your back-end ratio. Your front-end ratio is the 28%.

FHA’s base pair is 31/43: housing no more than 31% of income, total debts no more than 43%. That works with no compensating factors. With documented strengths like reserves or a long, stable job history, limits can reach 40/50 at the top tier. Most files go through an automated finding, and that finding governs. Automated approval can allow noticeably higher DTI than the manual limits. The exact ceiling depends on the file and the lender.

Conventional has its own structure. Fannie Mae’s Selling Guide sets a 50% maximum DTI for loans run through its automated system. For manually underwritten loans, the general limit is 36%, with up to 45% for borrowers who meet the matrix’s credit score and reserve requirements. Government loans follow their own agency’s rules. Each figure is subject to lender guidelines and a complete review of property type, leverage, and credit.

Two notes on what counts as debt. The new mortgage payment counts in full, including insurance, taxes and the mortgage insurance premium. Other long-term debts count too, along with significant short-term ones. So a car payment that ends in eight months can still matter.

Cash-out refinances can face tighter DTI limits on the conventional side. That’s an edge case, but it matters if you refinance later. Lendmire’s piece Conventional vs FHA Cash-Out for a Homeowner Based on Credit and DTI walks through that choice.

The Mortgage Insurance Gap

This is where most of the real money sits. Both loans charge for insurance when you put down little. They end very differently.

FHA. Across the wholesale programs Lendmire works with, there’s an upfront premium of 1.75% of the base loan. Most borrowers finance it, which raises the loan amount. Then there’s an annual premium between 0.15% and 0.75% of the balance, depending on term, loan amount and LTV. On a thirty-year loan above 90% LTV, that annual premium lasts the full term. At or below 90% LTV, it ends after eleven years. HUD has lowered the annual premium for most new borrowers in recent years, so the schedule is a moving target. Quotes show the current numbers.

Conventional. PMI is typically required with less than 20% down. It can be paid monthly, upfront, or as a mix. The CFPB says you have the right to remove PMI on many mortgages. Under federal law, you can request cancellation when your balance reaches 80% of the original value, if you’re current and your payment record is good. It terminates automatically at 78% if you’re current. Here’s the catch. The timing test uses original value, not what an appraiser says today, per the CFPB’s procedures. A hot market doesn’t shorten the clock.

Conventional insurance can come off. FHA insurance often can’t, short of refinancing or paying off the loan. If you plan to keep the loan a long time, that difference grows every year.

How Time Owned Changes the Choice

Time owned works as a break-even test. Ask how many years you’ll hold this loan, then compare total insurance cost across that window.

The method, with no invented numbers:

1. Get both quotes in writing, same price, same down payment.

2. For FHA, add the financed upfront premium to the annual premiums over your hold period.

3. For conventional, add the PMI payments until the point it would cancel or end.

4. Compare totals at three horizons: short stay, medium stay, long stay.

Short stays tend to favor whichever program has the lower payment now, because you won’t be around for the long tail. Long stays tend to favor conventional when your credit is strong, because the insurance falls away. Where you expect to cancel PMI soon, conventional probably costs less overall.

There’s a second meaning to “time owned,” and it matters for refinancing. If you start on FHA with a plan to refinance later, here’s what the programs ask:

• FHA Streamline. Refinances an existing FHA loan with no appraisal, a limited credit review and a net tangible benefit test. The insurance premium continues. It’s FHA to FHA, so it doesn’t remove the premium.
• FHA rate-and-term refinance. With an appraisal, it reaches 97.75% financing on a principal residence you’ve occupied for the previous twelve months.
• FHA cash-out. Reaches 80% LTV on a home you’ve owned and occupied for 12 months before the case number.
• Refinance into conventional. A new appraisal sets your new LTV. Get to 80% or lower and PMI isn’t needed. The refinance also resets the original-value baseline for any future PMI cancellation. Leverage, reserves, and pricing vary by lender and program; the final terms follow the full file review.

(Equity is the exit ticket. Appreciation helps you refinance out of FHA. It doesn’t help cancel conventional PMI on the original loan.)

For borrowers weighing FHA cash-out against a conventional cash-out, Lendmire has an article that covers the trade, titled Should You Choose FHA Cash-Out Over Conventional With Lower Credit?

The Decision Grid

Credit, DTI and hold time interact. Here’s how brokers weigh them together. Treat this as a starting lean, not a verdict.

When variables conflict, the one that sets eligibility wins first. If DTI blocks conventional, cost comparisons don’t matter yet. Once both programs are open to you, hold time and insurance cost decide.

Four Quick Scenarios

Strong credit, low DTI. A buyer putting down at least 5%. Conventional insurance is risk-priced, and strong credit makes it cheaper. FHA’s flat schedule doesn’t reward that score. Conventional usually wins.

Modest credit, high DTI. FHA’s wider ratio room and credit-independent insurance often make it the practical path. The plan might include refinancing later as credit improves.

Strong credit, high DTI. A common surprise. Conventional’s automated system can still approve a high-DTI file, but manual limits are tighter. Run both. Sometimes FHA opens the door and strong credit lets you refinance out sooner.

Short-stay buyer. If you expect to move in a few years, the long tail of insurance matters less. Lower cost at the start can matter more than cancellation rights you’ll never use.

What Can Override the Grid

Some factors sit outside the core variables:

• Credit events. HUD’s waiting periods are two years from a chapter 7 discharge and three years from a foreclosure. Those are HUD’s rules, and lenders may add their own.
• Property condition. FHA has its own property standards in HUD Handbook 4000.1. A home that needs work may fit one program better.
• Loan size. County loan limits apply to FHA, and they change every year. Check the limit for your county before you shop.
• Seller help. FHA allows seller or interested-party contributions up to 6% of the price.
• A co-borrower. FHA allows a non-occupant co-borrower. Conventional manual rules for the occupying borrower can be tighter.
• Lender overlays. HUD sets a floor. Lenders can set stricter ones. That’s why advertised minimums and real approvals differ.

Common Mistakes

• Choosing on the monthly payment alone and ignoring how long insurance lasts.
• Assuming FHA is “for bad credit” and skipping it with decent credit and a high DTI.
• Assuming conventional means no mortgage insurance.
• Expecting a higher appraisal to cancel PMI at 80%.
• Believing an FHA Streamline removes the premium. It doesn’t.
• Taking the first suggestion without comparing written quotes.

Five Questions to Pick Your Lean

1. What’s the middle of your three credit scores?

2. What’s your total DTI, counting every debt?

3. How much are you putting down, as a percentage of price?

4. How many years do you honestly expect to keep this loan?

5. If you chose FHA, would you refinance out once you build equity?

Strong scores, low DTI and a long hold point to conventional. Lower scores, higher DTI or a thin file point to FHA. Mixed answers mean run both quotes against your hold period. All of it is subject to lender guidelines and full file review.

If you’re buying a home and want to see whether FHA loan programs fit your file, Lendmire can help you compare the options and what each one asks of the file.

Key Terms Defined

MDCS (minimum decision credit score): the score FHA uses to decide eligibility, taken as the middle of three bureau scores.

DTI (debt-to-income ratio): your monthly debt payments divided by your gross monthly income.

PMI (private mortgage insurance): insurance on a conventional loan, typically required with less than 20% down.

Upfront premium: the one-time FHA mortgage insurance charge, usually financed into the loan.

Annual premium: the ongoing FHA mortgage insurance charge, paid monthly as part of the payment.

LTV (loan-to-value): the loan balance divided by the home’s value.

Seasoning: the time you’ve owned or occupied a home before certain refinances are allowed.

For your own numbers, request a scenario review with Lendmire.

About Lendmire

Lendmire (NMLS# 2371349) is a mortgage brokerage serving homeowners and home buyers in 16 states. FHA, VA, conventional and jumbo purchase and refinance loans are arranged through wholesale lending channels; Lendmire brokers the financing and the lender underwrites each application. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

1. HUD FHA Q&A: minimum credit score and how it is determined

2. CFPB: What is mortgage insurance and how does it work

3. Fannie Mae Selling Guide B3-6-02: Debt-to-Income Ratios

4. CFPB: PMI search-by-tag

5. CFPB: Homeowners Protection Act PMI cancellation procedures

6. HUD Handbook 4000.1 landing page