20% is a preference, not a rule. Here is what putting less down really costs — and what waiting costs instead.
20% down is not a rule; it is just the point where private mortgage insurance disappears. The actual minimums: 3% on several conventional first-time-buyer programs, 3.5% FHA, 0% VA and USDA for those who qualify. The real question is not "can I buy with less than 20%?" — it is "what does buying with less actually cost?"
Take a $400,000 home at 6.5%. With 3% down ($12,000), the loan is $388,000: about $2,452/month in principal & interest, plus PMI of roughly $259/month (at a typical 0.8%/year). With 20% down ($80,000), the loan is $320,000: about $2,023/month, no PMI. The small-down path costs about $688 more per month — but requires $68,000 less cash today.
Model your own version in the mortgage calculator, and remember PMI is not forever on conventional loans — it dies at 20% equity.
Saving from 3% to 20% on a $400,000 home means saving an extra $68,000. At $1,500/month, that is almost four years — during which rent gets paid, and if homes appreciate even 3%/year, that $400,000 house costs about $450,000 by the time you are "ready." The extra monthly cost of buying sooner is real, but so is the cost of waiting. The rent vs. buy calculator puts your actual numbers on both sides.
The classic first-time-buyer mistake is emptying every account for a rounder down payment, then meeting the first roof repair with a credit card. Keep 3–6 months of expenses untouched, and remember closing costs run 2–5% of the price on top of the down payment. A 10% down payment with a real emergency fund beats 15% down with nothing left — every time it rains.
Can my down payment be a gift?
Yes — major loan programs allow gift funds from family, documented with a signed gift letter stating no repayment is expected. Lenders trace large deposits, so move gift money into your account early and keep the paper trail clean.
Does a bigger down payment lower my interest rate?
Somewhat — conventional pricing improves at certain equity tiers — but the headline wins are the smaller balance and escaping PMI. Don't expect 20% down to transform the rate itself; run versions in the mortgage calculator and compare totals, not vibes.
Is the down payment the only cash I'll need?
No — closing costs run another 2–5% of the price, plus inspection, movers, and first repairs. The full day-one bill is itemized in our first-time buyer guide.
Do VA and USDA really mean zero down?
For eligible borrowers, yes — VA for service members and veterans, USDA for designated rural areas with income limits. Zero down still isn't zero cash: closing costs remain, though VA caps some fees and both allow seller concessions to cover part of the bill.
🤝 No signup. No spam. Nothing here tries to sell you a loan.