Mortgage Down Payment Guide: How Much Do You Really Need?
The down payment is often the biggest barrier standing between a renter and a homeowner. How much you actually need — and whether the often-cited "20% rule" is real or myth — is one of the most misunderstood aspects of buying a home. This guide covers every down payment option available, what each one costs long-term, and strategies to buy sooner with less cash upfront.
Key insight: 20% down is a threshold that eliminates PMI on conventional loans — not a requirement to buy. Millions of Americans buy homes every year with 3–10% down.
Minimum Down Payment by Loan Type
The Real Cost of Each Down Payment Level
On a $380,000 home purchase:
*Estimated total PMI cost assumes home appreciates ~3.5%/yr to 20% equity. Actual varies. Use our Mortgage Calculator for your specific numbers.
The 20% Myth: When It Makes Sense and When It Doesn't
There's an old rule that says you should always put 20% down. The logic is sound — you eliminate PMI, get a lower monthly payment, and start with meaningful equity. But it's not the right answer for everyone.
When 20% down makes sense:
- You have the cash without depleting emergency reserves
- Your down payment savings are earning less than your mortgage rate
- You want the lowest possible monthly payment from day one
- You're in a stable job and financial position
When putting less than 20% down makes sense:
- Waiting to save 20% means renting for several more years during which home prices may rise
- You'd deplete all cash reserves — homeownership requires emergency funds
- The opportunity cost of tying up that cash (e.g., 401k match you'd miss, high-return investments)
- PMI costs are modest and you'll reach 20% equity relatively quickly
PMI on a $350,000 conventional loan typically costs $150–$250/month and cancels automatically once you hit 78% LTV. That's real money, but it's not a reason to delay buying for years if you're financially ready. See our PMI guide for cancellation strategies.
Down Payment Assistance Programs
Down payment assistance (DPA) programs are one of the most underutilized resources in homebuying. Offered by state housing finance agencies, local governments, and nonprofits, they provide:
- Grants: Free money that never needs to be repaid — typically $2,500–$10,000
- Forgivable loans: A second mortgage forgiven after you stay in the home for a set period (usually 5–10 years)
- Deferred payment loans: Second mortgage with no payments until you sell, refinance, or pay off the first mortgage
- Low-interest second mortgages: Help cover the down payment gap with affordable terms
Eligibility usually requires being a first-time buyer (defined as no ownership in the past 3 years), income below a threshold (typically 80–120% of area median income), and purchasing a home below a price cap. Many programs can be combined with FHA, VA, or USDA loans. Ask your lender or contact your state's housing finance agency directly.
Where Down Payment Money Can Come From
Lenders carefully scrutinize the source of your down payment funds:
- Personal savings: Easiest to document — just show bank statements
- Gift funds: Allowed on most loan types with a gift letter. FHA allows 100% gift; conventional may require a minimum from your own funds
- Retirement accounts: Some 401k and IRA programs allow first-time buyer withdrawals with reduced penalties — consult a tax advisor
- Proceeds from asset sale: Documenting the sale and transfer is required
- Down payment assistance programs: Documented by the agency providing the funds
Large deposits in your bank account will be questioned by underwriters. All unusual deposits need a "paper trail" — document everything well before applying. Avoid moving money between accounts unnecessarily in the months before applying.
How to Save for a Down Payment Faster
- Open a dedicated HYSA — High-yield savings accounts currently pay 4–5% APY, meaningfully accelerating savings
- Automate transfers — Set up automatic transfers on payday so you never see the money
- Cut major expenses — Housing and transportation are the biggest levers; downsizing either accelerates savings dramatically
- Target windfalls — Commit tax refunds, bonuses, and gifts directly to your down payment fund
- Check DPA programs first — You may need far less than you think
- Consider smaller first home — Buying a starter home builds equity you can use as down payment on a larger home later
The Optimal Down Payment Strategy
There's no single right answer — it depends on your cash position, local market, and financial goals. But a practical framework:
- Never deplete your emergency fund for a down payment — keep 3–6 months of expenses separate
- Budget for closing costs (2–5% of loan amount) on top of down payment — see our closing costs guide
- Check DPA programs before assuming you need 20%
- Use our Affordability Calculator to model different down payment scenarios
- Calculate the break-even between PMI costs and investing the extra cash