How Much Down Payment Do You Actually Need?
The “20% down” rule is so widely repeated that most people assume it’s a law. It’s not. Here’s the complete, honest guide to down payments in 2026.
The Down Payment Options
| Down Payment | Loan Type | PMI Required? | Notes |
|---|---|---|---|
| 3% | Conventional (Fannie/Freddie) | Yes | First-time buyers only |
| 3.5% | FHA Loan | Yes (MIP) | Credit score 580+ |
| 5% | Conventional | Yes | Most buyers qualify |
| 10% | Conventional | Yes (lower rate) | Good middle ground |
| 20% | Conventional | No | The gold standard |
| 25%+ | Conventional | No | Best rates |
| 0% | VA Loan | No | Military veterans only |
| 0% | USDA Loan | No | Rural areas only |
What is PMI and What Does It Cost?
Private Mortgage Insurance protects the lender (not you) if you default. It’s required when you put less than 20% down on a conventional loan.
Cost: 0.5%–1.5% of loan amount per year
On a $320,000 loan (80% of $400K home) at 1%:
- $267/month extra — zero return, pure cost
- It cancels automatically when you reach 20% equity
- At normal appreciation, that takes about 7–8 years
The Real Cost of Putting 3% Down
On a $400,000 home:
| Down Payment | Amount | Loan | Monthly PMI | Monthly Mortgage | Total Monthly |
|---|---|---|---|---|---|
| 3% | $12,000 | $388,000 | $323 | $2,597 | $2,920 |
| 10% | $40,000 | $360,000 | $270 | $2,409 | $2,679 |
| 20% | $80,000 | $320,000 | $0 | $2,141 | $2,141 |
Putting 3% vs 20% down costs you $779 more per month — forever until you hit 20% equity.
When Less Than 20% Makes Sense
Put less down if:
- Rates are rising and you want to lock in now
- You’re in a fast-appreciating market (equity comes faster)
- You’d be draining your entire emergency fund to hit 20%
- You qualify for a first-time buyer program with better terms
- The home is significantly underpriced
Put 20%+ down if:
- You have the cash without depleting reserves
- You’re in a stable or slow-appreciating market
- Your monthly budget is tight
- You want the simplicity of no PMI
First-Time Buyer Programs
Many states offer down payment assistance:
- Down Payment Assistance Grants — free money, don’t repay
- Second mortgage programs — low/no interest second loan
- FHA loans — 3.5% down, easier qualification
Google: “[your state] first time home buyer down payment assistance” — real programs exist and are underused.
The Opportunity Cost Question
The other side of the 20% argument: that $80,000 invested in the S&P 500 at 7%/year grows to $160,000 in 10 years. Putting it into a house as a down payment “costs” you that growth.
But the home is also appreciating. And you’re building equity. The math gets complex — which is exactly why our calculator includes the opportunity cost of your down payment in the comparison.
The Bottom Line
20% is ideal if you can do it without financial stress. But 10% with PMI is reasonable in a rising market. 3% is a last resort — the monthly cost premium is real and significant.
Never drain your emergency fund to hit a down payment target. A $500 plumbing bill shouldn’t put you in a crisis the week after closing.