A large down payment can lower your monthly bill and cut years of interest. It can also leave you cash-poor the moment you get the keys. Neither outcome is automatic — the right number depends on your savings cushion, your goals, and how much risk you're comfortable carrying.
This article breaks down what actually happens on both sides of that decision, using real numbers, so you can figure out what fits your situation.
Key Takeaways
- A 20%+ down payment can lower your monthly payment, cut total interest, and eliminate PMI
- Ties up cash you may need for emergencies, moving costs, or other investments
- There's no universal "right" percentage; it depends on your budget and savings cushion
- Loans with 3-10% down are common and can still get you approved, depending on the program
What Counts as a "Large" Down Payment
20% of the purchase price is the widely used benchmark for "large." It's the threshold that eliminates private mortgage insurance on a conventional loan, and it's meaningfully above what most buyers actually put down.
How that stacks up against real minimums and typical buyers:
- Minimums are much lower than most people assume — 3.5% for FHA loans, and as low as 3% for conventional programs like Fannie Mae's HomeReady or Freddie Mac's Home Possible
- Anything above those minimums can count as "larger than average," even if it isn't a full 20%
- According to the National Association of Realtors' 2025 Profile of Home Buyers and Sellers, the median down payment for first-time buyers is just 10%. Repeat buyers put down closer to 23%.
20% isn't the norm. It's the goal for buyers who want to skip PMI and shrink their loan as much as possible.
Advantages of a Large Down Payment
The upside of a bigger down payment isn't abstract. It shows up directly in your monthly payment, your total interest cost, and sometimes your loan eligibility.
Lower Monthly Mortgage Payments
A bigger down payment means a smaller loan, which means less principal and interest due each month. On a $400,000 home at 6.66% over 30 years, the difference between 10% down and 20% down looks like this:
| Down payment | Loan amount | Monthly P&I | Total interest (30 yrs) |
|---|---|---|---|
| 10% ($40,000) | $360,000 | $2,313.46 | $472,844.50 |
| 20% ($80,000) | $320,000 | $2,056.41 | $420,306.22 |
That's $257 less per month with 20% down, and this comparison excludes PMI, which the 10%-down loan would likely carry on top. A smaller monthly obligation also improves your debt-to-income ratio, giving you more breathing room against rising grocery, utility, and insurance bills.
Avoiding Private Mortgage Insurance (PMI)
PMI protects the lender, not you. It's required on most conventional loans once you're below 20% down, and it disappears the moment you cross that line.
According to Freddie Mac, PMI costs $30 to $70 per month for every $100,000 borrowed, or roughly 0.36% to 0.84% of the loan balance annually. On a $360,000 loan, that could mean $108 to $252 a month in pure added cost, on top of principal and interest.
This matters most for buyers using conventional financing in pricier markets, where a bigger loan balance means bigger PMI premiums.
Reduced Total Interest Paid Over the Loan Term
Borrow less, pay less interest. Over 30 years, that adds up fast. In the example above, the $40,000 difference in loan size saves $52,538 in interest across the full loan term.
That's money that stays in your pocket instead of going to the lender, and it directly speeds up how quickly you build real equity in the home.
Potential for Better Loan Terms and Competitive Offers
A larger down payment lowers your loan-to-value ratio: 20% down puts you at 80% LTV instead of 90%. Fannie Mae's pricing structure is organized around LTV and credit score bands, so a lower LTV can sometimes land you in a more favorable pricing tier.
That said, it's not a guarantee of a lower rate. Credit score, loan type, and market conditions still carry significant weight. In competitive markets, sellers may also view a larger down payment as a signal of a stronger, less risky buyer, which can help an offer stand out.
Drawbacks of a Large Down Payment
Tying up more cash upfront isn't free. It carries real opportunity costs and liquidity risks that get glossed over in "just put 20% down" advice.
Reduced Cash Reserves and Liquidity
Every dollar that goes toward a down payment is a dollar that's no longer available for emergencies. The Consumer Financial Protection Bureau recommends keeping 3-6 months of expenses in reserve, separate from your down payment (CFPB).
Don't forget the costs that hit right after closing:
- Moving expenses
- New furniture and appliances
- Immediate repairs or maintenance
- Closing costs themselves, typically 2-5% of the purchase price
Draining your savings to hit 20% can leave you exposed in the first year, when unexpected costs are most likely.
Opportunity Cost of Tied-Up Capital
Money in a down payment isn't earning anything elsewhere. Fidelity reports the S&P 500 has averaged roughly 10% annually since 1957, versus recent average mortgage rates around 6.66% (Fidelity).
Put side by side:
- Historical equity returns near 10% annually
- Mortgage interest often near 6–7% in recent markets
- Guaranteed loan-balance reduction only if you put more cash into the house
That gap raises a fair question: would extra cash work harder in a retirement account than in home equity? It depends on your risk tolerance and timeline. Market returns aren't guaranteed the way a smaller loan balance is, so some buyers put less down and invest the difference, while others prefer the certainty of a smaller loan.
Delayed Homeownership Timeline
Saving an extra 10% on a $400,000 home means finding another $40,000. That can take years — years during which home prices and rents often keep climbing. If prices rise faster than your savings, waiting for a bigger down payment can end up costing you more than the interest you'd save.
How Much Should You Actually Put Down
The right down payment depends on your full financial picture—not a fixed percentage.
Consider:
- Emergency savings — do you still have 3-6 months of expenses left after the down payment?
- Monthly budget comfort — does the resulting payment leave room for other goals?
- Loan program eligibility — 20% isn't required for approval
Minimum down payments vary widely by loan type:
- Conventional (HomeReady/Home Possible): as low as 3%
- FHA: 3.5%
- VA: 0% for eligible veterans and service members
- USDA: 0% in eligible rural areas
- Jumbo loans: typically 10-20%, with stricter credit requirements
If you're self-employed or have non-traditional income, bank-statement or 1099-income programs may change how much you need upfront. A mortgage advisor at ClearPoint Mortgage Advisors can walk you through different down payment scenarios before you commit.
Frequently Asked Questions
How much of a down payment do I need for a $1,000,000 house?
It depends on your loan type. A conventional loan at 20% down ($800,000) stays under the 2026 baseline conforming limit of $832,750. Ten percent down creates a $900,000 loan that may require jumbo financing, depending on your county's limit.
Is $20,000 a good down payment on a $400,000 house?
$20,000 is 5% of $400,000, which meets the minimum for some conventional programs. It's below the 20% threshold, though, so you'd likely still pay PMI.
Is 20% considered a large down payment?
Yes. It's well above the typical first-time buyer average of 10% and is the standard threshold for avoiding PMI on a conventional loan.
Can you get a lower mortgage rate with a larger down payment?
Sometimes. A larger down payment lowers your loan-to-value ratio, which can help with rate pricing, but credit score and loan type also play a major role. It's not a guarantee.
Is a large down payment a good idea?
It depends on your liquidity and goals. Weigh the lower monthly payment and interest savings against having less cash on hand for emergencies and other priorities.
What salary do I need to afford a $400,000 house?
With 20% down, the principal and interest payment is about $2,056/month. At standard debt-to-income limits, that translates to roughly $49,000-$69,000 in annual income, though taxes and insurance will raise the required income further.
