For first-time homebuyers, deciding on the right mortgage structure often comes down to two primary programs: Federal Housing Administration (FHA) loans and conventional conforming loans. Both offer viable paths to homeownership, but they serve different financial profiles—particularly when it comes to credit scores, down payment flexibility, and mortgage insurance costs.

Choosing between an FHA loan and a conventional loan is not just about getting approved; it is about choosing the loan that minimizes your total cost of borrowing over time.

The Core Differences: At a Glance

While conventional loans are backed by private lenders and purchased by government-sponsored enterprises like Fannie Mae and Freddie Mac, FHA loans are insured directly by the federal government through the Department of Housing and Urban Development (HUD). This government backing allows lenders to extend financing to buyers who carry higher credit risk.

Minimum Credit Score Guidelines by Program
0.0178.3356.5534.8713.0500.00ScoreFHA (10% Down)580.00ScoreFHA (3.5% Down)620.00ScoreConventional Conforming
HUD Handbook 4000.1 & Fannie Mae Selling Guide baseline underwriting rules.

1. Credit Score Requirements

Credit score requirements represent the clearest dividing line between the two programs:

  • FHA Loans: HUD Handbook 4000.1 establishes a minimum credit score threshold of 580 to qualify for the standard 3.5% down payment. Buyers with scores between 500 and 579 can still qualify for an FHA loan, but must supply a minimum down payment of 10%.
  • Conventional Loans: Under Fannie Mae and Freddie Mac underwriting standards, the baseline minimum credit score for a conforming mortgage is 620. Borrowers with scores below 620 generally cannot qualify for standard conforming conventional products regardless of down payment size.

If your credit score sits between 580 and 619, an FHA loan is frequently your only accessible conforming financing route.

2. Down Payment Comparison

A persistent myth in real estate is that conventional loans always require a 20% down payment. In reality:

  • Conventional: Qualifying first-time buyers can put down as little as 3.0% through programs like Fannie Mae HomeReady or Freddie Mac Home Possible. For standard conventional purchases outside these programs, minimum down payments typically start at 5.0%.
  • FHA: The minimum down payment is fixed at 3.5% for any borrower with a credit score of 580 or higher.

While conventional loans can technically offer a slightly lower minimum entry point (3.0% vs. 3.5%), conventional underwriting is noticeably stricter on debt ratios and credit profiles at lower down payment levels.

3. The Mortgage Insurance Divide

Mortgage insurance protects the lender if a borrower defaults, but how it is calculated and canceled varies significantly between programs.

FHA Mortgage Insurance (MIP)

FHA loans carry two mandatory insurance charges:

  1. Upfront MIP: A one-time fee equal to 1.75% of the base loan amount, which is typically rolled directly into the principal balance.
  2. Annual MIP: Paid monthly. On March 20, 2023, HUD lowered the annual MIP rate by 30 basis points to 0.55% of the loan balance for most 30-year mortgages with 3.5% down.

Critical caveat: If you put down less than 10% on an FHA loan, you must pay annual MIP for the entire life of the loan. The only way to remove it is to refinance into a conventional loan once you build sufficient equity.

Conventional Private Mortgage Insurance (PMI)

Conventional loans do not charge an upfront mortgage insurance fee. If you put down less than 20%, you will pay monthly Private Mortgage Insurance (PMI).

Unlike FHA loans, conventional PMI is temporary. Under the federal Homeowners Protection Act of 1998, your lender must automatically terminate PMI once your principal balance reaches 78% of the original home value (assuming you are current on payments). Furthermore, you can proactively request PMI removal once your loan balance reaches 80% of original value.

Which Loan Should You Choose?

Choose an FHA Loan If:

  • Your credit score is between 580 and 659.
  • Your debt-to-income (DTI) ratio exceeds 45% (FHA automated underwriting often permits DTIs up to 50% or higher with compensating factors).
  • You have recent derogatory credit marks, such as a bankruptcy or foreclosure, which have shorter seasoning requirements under FHA guidelines.

Choose a Conventional Loan If:

  • Your credit score is 680 or higher (where private mortgage insurance rates become significantly cheaper than FHA MIP).
  • You want the ability to eliminate mortgage insurance without needing to pay refinancing closing costs down the road.
  • You are purchasing a property (such as certain condominiums or fixer-uppers) that might not satisfy strict FHA property safety guidelines.

By matching your credit profile and long-term financial plans to the right program, you can save thousands of dollars over the duration of your mortgage.