The standard advice for saving a down payment is to “just save 20 percent.” People repeat it like a rule of law. But it’s not a law. It’s a threshold, and understanding what actually happens above and below it changes the entire calculation.
Most first-time buyers don’t put down anywhere close to 20 percent. And the ones who do often wait longer than they need to, sometimes pricing themselves out of a market that keeps moving while they save.
Here’s what the data actually says, and how to build a realistic plan from there.
Where the 20 percent number comes from
The 20 percent threshold exists for one reason: Private Mortgage Insurance, or PMI. If you put down less than 20 percent on a conventional loan, lenders require PMI to protect themselves in case you default. It typically costs 0.5 to 1.5 percent of the loan amount per year, added to your monthly payment.
The important detail that most people miss: PMI is temporary. On a conventional loan, you can request it be removed once you reach 20 percent equity, and it’s automatically cancelled at 22 percent. It’s not a permanent cost. It’s a bridge.
If you go with an FHA loan, the minimum down payment drops to 3.5 percent (with a credit score of 580+), but FHA mortgage insurance works differently. It lasts the life of the loan if you put down less than 10 percent, and for 11 years if you put down 10 percent or more. To remove it, you’d need to refinance into a conventional loan.
There are also conventional loan programs that allow as little as 3 percent down, like Fannie Mae’s HomeReady and Freddie Mac’s Home Possible. These are designed for lower-income borrowers and come with their own PMI structures, but they exist. The floor is not 20 percent. It’s not even close.
What first-time buyers actually put down
The National Association of Realtors tracks this every year in their Profile of Home Buyers and Sellers. The 2025 report, covering transactions from July 2024 through June 2025, shows that most first-time buyers aren’t putting down anywhere near 20 percent.
The median down payment for first-time home buyers in the U.S. was 10% in 2025. For repeat buyers, it was 23%. The overall median across all buyers was 19%.
Ten percent, not twenty. The 20 percent figure you see everywhere is skewed by repeat buyers who roll equity from a previous home into their next purchase. For people buying their first home, the actual number is half that.
The real cost of waiting for 20 percent
The calculation isn’t just “PMI costs money, so avoid it.” You have to weigh the cost of PMI against the cost of continuing to rent while you save.
Consider a $360,000 home with 10 percent down. That gives you a $324,000 loan. PMI at 1 percent runs about $270 per month. If it takes you an extra two years of renting at $1,800 per month to get from 10 to 20 percent saved, you’ve spent $43,200 in rent that builds zero equity. PMI over those same two years would total about $6,500, and you can cancel it once you reach 20 percent equity through payments and appreciation.
$6,500 in PMI versus $43,200 in rent. The math doesn’t always favor waiting.
Running your actual numbers
This is where most guides get vague. Not this one.
The typical home value in the U.S. is around $360,000 according to Zillow’s Home Value Index for 2025. Obviously your local market may be very different, but we need a starting point.
At a median home value of roughly $360,000, a 10% down payment is $36,000. At FHA's 3.5% minimum, it's $12,600. At the often-cited 20%, it's $72,000.
The gap between $12,600 and $72,000 is enormous. It’s the difference between a realistic two-year goal and something that feels out of reach at a median household income of $83,730, per the Census Bureau’s 2024 data.
Let’s say you’re targeting 10 percent on a $360,000 home, which comes to $36,000. You’ll also want roughly $5,000 to $10,000 for closing costs (typically 2-5 percent of the loan amount), plus a small buffer. Call it $45,000 total.
At $1,250 per month, you’d hit $45,000 in 36 months (three years). At $1,875 per month, you’re there in two years. At $750 per month (roughly $175 per week), you’re looking at five years.
Those are real timelines with a real finish line. And that’s the point. Once you can see a specific date on the horizon, “someday I’ll buy a house” turns into an actual plan.
Where first-time buyers find the money
The NAR data breaks this down too. Among first-time buyers in 2025, 59 percent used personal savings as their primary source. Twenty-six percent tapped financial assets like 401(k)s, IRAs, or stocks. And 22 percent received help from family or friends through a gift or loan.
Nearly one in four first-time buyers got financial help from someone else. There’s no shame in that, and it’s just the reality of today’s housing market. But it also means that if you’re doing it entirely on your own savings, you’re already playing a harder game. Knowing that should inform your timeline expectations, not your self-worth.
The step-by-step approach
Here’s how to turn the math into a plan that actually works.
Step 1: Pick your target price and percentage. Look at what homes actually cost in the area where you want to buy. Use Zillow, Redfin, or Realtor.com to filter by your criteria. Then choose your down payment percentage: 3.5 percent if you’re going FHA, 3-5 percent for certain conventional programs, 10 percent as a middle ground, or higher if you want to avoid PMI. Write down the exact dollar amount.
Step 2: Add closing costs and a buffer. Take your down payment number and add 2-5 percent of the expected loan amount for closing costs, plus $2,000-3,000 as a cushion. This is your total savings target.
Step 3: Check for assistance programs. Many states, counties, and cities offer first-time buyer programs with down payment assistance grants or forgivable loans. The U.S. Department of Housing and Urban Development maintains a list by state. These programs have income limits, but they’re worth checking before you assume you need to save everything yourself.
Step 4: Set a monthly savings amount based on your timeline. Divide your total target by the number of months until you want to buy. If the monthly number is too high, extend the timeline. If it’s surprisingly manageable, consider whether you could accelerate it.
Step 5: Automate the transfer. Set up an automatic transfer to a dedicated high-yield savings account on the day after each paycheck. Not the day before bills are due. Not “whatever’s left over.” The transfer goes first. This is the pay yourself first principle in action.
Step 6: Track progress against your specific number, not a vague percentage. “I’ve saved $14,200 of $45,000” is motivating in a way that “I’m 31 percent of the way there” isn’t. You can see the gap closing in real dollars. Research on the goal gradient effect shows you’ll naturally push harder as that remaining gap shrinks.
The real obstacle isn’t knowledge
Most people who want to buy a home understand the basics. They know they need a down payment. They have a rough sense of what homes cost. What they lack isn’t information. It’s a specific, dollar-denominated goal with a realistic timeline attached to it. Structuring it as a SMART savings goal with a concrete target, a monthly amount, and a deadline is what turns aspiration into execution.
“Save for a house” is a wish. “$45,000 by March 2029 at $1,250 per month” is a plan. The difference between those two things is the difference between thinking about buying a home and actually doing it.
First-time buyer share dropped to 21 percent in the 2025 NAR report, and the median age of a first-time buyer has risen to 38. None of that changes by waiting. But it does change by starting, even if starting means $200 a month into a high-yield savings account while you figure out the rest. And before you start stacking a down payment, make sure you have a basic emergency fund in place — even $500 can keep an unexpected expense from derailing your plan.