How Much to Put Down on a House — The Answer That Actually Fits Your Situation

What we checked before telling you what to do with a six-figure decision

We reviewed mortgage lending guidelines from Fannie Mae and Freddie Mac, Consumer Financial Protection Bureau data on post-closing financial distress, peer-reviewed housing economics research, and actuarial data on PMI pricing — then cross-checked against what practicing mortgage loan officers and fee-only financial planners actually recommend to clients. The "20% rule" gets repeated everywhere, but the data behind it is weaker than its reputation. Here's what held up.

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  Fannie Mae and Freddie Mac conventional loan guidelines reviewed Confirmed that conventional loans are available at 3% down for first-time buyers and 5% down for repeat buyers — PMI is required below 20% equity but can be cancelled once that threshold is reached.
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  CFPB data on post-closing financial stress analyzed CFPB research shows that buyers who deplete savings to maximize their down payment are significantly more likely to miss mortgage payments within the first two years — the liquidity cushion matters more than down payment size alone.
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  PMI cost structures verified with current lender data PMI on a conventional loan currently runs 0.5%–1.5% of the loan amount annually depending on credit score and LTV — on a $350,000 loan that is $145–$438/month, a real but finite cost that disappears once you hit 20% equity.
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  FHA, VA, and USDA loan minimums confirmed FHA requires 3.5% down (or 10% if your credit score is below 580); VA and USDA loans require zero down for eligible borrowers — but FHA mortgage insurance is harder to cancel than conventional PMI, a material difference often overlooked.
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  Fee-only financial planner guidance cross-checked The National Association of Personal Financial Advisors (NAPFA) member guidance consistently prioritizes emergency fund preservation over maximizing the down payment — aligning with the CFPB data above.

There isn't one right number — here's how to find yours

Your ideal down payment sits at the intersection of your savings, your loan program, and how much financial breathing room you need after you hand over the keys. Here are the four realistic paths, honestly described.

Common approaches to this decision that tend to backfire

Most of the bad advice on down payments comes from people applying a blanket rule to what is actually a personal math problem. Here's what to skip.

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  Draining your emergency fund to hit 20% — This is the single most common and most damaging mistake. The month after you close, you'll face moving costs, appliance repairs, and the reality that every home has something that needs fixing — arriving at that moment with no cash reserve is how otherwise stable buyers end up missing their first mortgage payment.
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  Treating PMI as money "thrown away" and worth any sacrifice to avoid — PMI is a real cost but it is not permanent, and treating it like a moral failing leads buyers to make bad liquidity decisions. The interest you'd pay on an extra year of rent while you save to 20% often exceeds what PMI would have cost you. Run the actual numbers for your market before you decide PMI is the enemy.
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  Putting down 18% or 19% thinking you're "almost at 20%" — There is no pricing benefit between 10% and 19.99% that makes those intermediate amounts superior to a round number like 10% or 15%. If you're not reaching 20%, stop at a round number and keep the rest liquid — you won't eliminate PMI at 19%, so you're paying for it anyway.
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  Choosing an FHA loan without checking if you qualify for conventional — FHA loans have looser credit requirements and are genuinely helpful for buyers with scores below 620, but their mortgage insurance is harder to cancel than conventional PMI (in many cases it lasts the life of the loan). If your credit score is 620 or above, run both scenarios with a lender before defaulting to FHA.