Down Payment Guide · 2026

How Much Down Payment for a $400K House?

You have options — from 3% FHA to 20% conventional. A 23-year banking veteran breaks down what each choice really costs you.

Minimum (FHA)
$12K
3% down — highest monthly cost
Recommended
$80K
20% down — no PMI

Down Payment Options for a $400K Home

The size of your down payment dramatically affects your monthly payment, whether you pay PMI, and how much cash you need on day one. Here's the full comparison:

Down PaymentAmountMonthly PaymentPMITotal Cash Needed
3% (FHA)$12,000$2,748Yes (~$167/mo)$29,000
5% Conventional$20,000$2,695Yes (~$167/mo)$37,000
10% Conventional$40,000$2,478Reduced$57,000
20% Conventional$80,000$2,129None$97,000
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Licensed Banking Professional
23 Years · Mortgage Specialist
The difference between 3% and 20% down on a $400K home is $619/month. Over 5 years, that's $37,144 extra — plus PMI. If you can wait and save to 20%, it's almost always worth it.

What Is PMI and How Do You Avoid It?

Private Mortgage Insurance (PMI) protects the lender — not you — if you default. It typically costs 0.5-1% of the loan amount annually. On a $400K home with 3% down, that's approximately $2,000/year in PMI alone.

You can request PMI removal once you reach 20% equity in the home (through payments + appreciation). But the fastest way to avoid it is to put 20% down from the start.

FHA vs Conventional: Which Is Better?

→ Calculate Your Exact Payment

Use our mortgage calculator to compare exact monthly payments at different down payment amounts for your specific situation.