How down payments work on conventional home loans
A down payment is the initial upfront cash contribution a homebuyer pays towards the purchase price of a home, with the remaining balance financed through a mortgage loan. On conventional home loans backed by Fannie Mae and Freddie Mac, minimum down payment rules depend on your homeownership history, property type, and income tier.
First-time homebuyers can secure conventional financing with as little as 3% down through programmes such as Fannie Mae HomeReady or Freddie Mac Home Possible. For repeat buyers or standard conventional financing, the minimum down payment is typically 5%.
Putting down 20% or more eliminates private mortgage insurance (PMI) entirely, saving hundreds of dollars every month and reducing your overall lifetime borrowing costs.
Worked example: Purchasing a $400,000 home with 20% down
Consider a homebuyer in the United States purchasing a single-family house for $400,000 with a 20% cash down payment financed on a 30-year fixed conventional mortgage at a 6.75% interest rate.
A 20% down payment requires a required down payment of $80,000.00 in cash at closing, leaving an initial mortgage loan amount of $320,000.00.
Because the borrower reaches the full 20% equity threshold, monthly private mortgage insurance (PMI) is $0.00 and extra cash to reach 20% down (no PMI) is $0.00.
At a 6.75% interest rate, the monthly principal and interest (P&I) equals $2,075.51, bringing the total monthly payment (P&I + PMI) to $2,075.51 before local property taxes and hazard insurance.
Over the complete 30-year loan term, total principal and interest repaid equals $747,183.60, representing the $320,000 principal plus $427,183.60 in total interest over loan term.
Comparing low down payment options versus 20% down
Putting down less than 20% allows buyers to purchase a home years earlier without exhausting emergency savings. For example, a 5% down payment on a $400,000 purchase requires only $20,000 in upfront cash, but results in a larger $380,000 loan balance and monthly PMI premiums.
Homeowners who opt for a low down payment can cancel PMI once their mortgage principal balance amortises down to 80% of the home's original appraised value under the federal Homeowners Protection Act.
Inputs for the Conventional loan down payment calculator
Home purchase price
The contract purchase price or appraised value of the property.
Down payment percentage
The percentage of the purchase price you contribute in cash (typical tiers are 3%, 5%, 10%, and 20%).
Mortgage interest rate
The annual fixed interest rate (nominal, not APR) offered by your mortgage lender.
Loan term
The duration of your conventional mortgage in years (standardly 30 or 15 years).
CALCULATOR QUESTIONS
Conventional mortgage down payment questions
Can I put down less than 20% on a conventional loan?
Yes. Qualified first-time buyers can purchase a single-family home with as little as 3% down through programmes like Conventional 97 or Fannie Mae HomeReady. Most repeat buyers require a minimum of 5% down payment.
Why is 20% down payment recommended?
Putting down 20% eliminates private mortgage insurance (PMI), lowers your monthly mortgage payment, secures more competitive interest rates from lenders, and builds immediate equity to protect against market fluctuations.
Can gift funds be used for a conventional loan down payment?
Yes. Conventional loan guidelines permit gift funds from immediate family members, domestic partners, or eligible relatives to cover all or part of your down payment, provided a formal gift letter and documentation of fund transfer are submitted.
What is the difference between down payment and closing costs?
Your down payment is paid directly toward the home's purchase price to create initial equity. Closing costs are the administrative, appraisal, lender, and title fees (typically 2% to 5% of the loan amount) needed to process and finalize the mortgage.