A 20% down payment avoids PMI and lowers your monthly payment — but it requires significant saving time. Here’s the full picture.
20% Down Payment Amounts by Home Price
| Home Price | 20% Down | Monthly Payment (7%, 30yr) Without PMI |
|---|---|---|
| $250,000 | $50,000 | $1,330 |
| $300,000 | $60,000 | $1,596 |
| $350,000 | $70,000 | $1,862 |
| $400,000 | $80,000 | $2,129 |
| $420,000 | $84,000 | $2,235 |
| $500,000 | $100,000 | $2,661 |
| $600,000 | $120,000 | $3,193 |
| $700,000 | $140,000 | $3,725 |
| $800,000 | $160,000 | $4,257 |
How Long to Save 20% Down: By Monthly Savings
Based on a $420,000 home (20% = $84,000):
| Monthly Savings | Time to 20% Down | With 4.5% HYSA |
|---|---|---|
| $500 | 14 years | 11.2 years |
| $750 | 9 years 4 months | 7.8 years |
| $1,000 | 7 years | 6.1 years |
| $1,250 | 5 years 7 months | 4.9 years |
| $1,500 | 4 years 8 months | 4.2 years |
| $2,000 | 3 years 6 months | 3.2 years |
| $2,500 | 2 years 10 months | 2.6 years |
| $3,000 | 2 years 4 months | 2.2 years |
| $3,500 | 2 years | 1.9 years |
| $4,000 | 1 year 9 months | 1.7 years |
| $5,000 | 1 year 5 months | 1.4 years |
Savings Timeline by Annual Income (Saving 20% of Income)
| Annual Income | Monthly Savings | Time to $84,000 |
|---|---|---|
| $50,000 | $833 | 8.4 years |
| $60,000 | $1,000 | 7 years |
| $70,000 | $1,167 | 6 years |
| $80,000 | $1,333 | 5.25 years |
| $90,000 | $1,500 | 4.7 years |
| $100,000 | $1,667 | 4.2 years |
| $120,000 | $2,000 | 3.5 years |
| $150,000 | $2,500 | 2.8 years |
| $200,000 | $3,333 | 2.1 years |
20% Down vs. 10% Down: The Real Math
Should you wait for 20% or buy now with 10% down?
| Scenario | 10% Down Now | Wait for 20% Down |
|---|---|---|
| Down payment | $42,000 | $84,000 |
| Wait time (saving $1,500/mo) | Already there | +2.3 years |
| PMI cost | ~$150/mo | $0/mo |
| 5-year PMI total | ~$9,000 | $0 |
| Home appreciation (5%, 2.3 yrs) | +$53,000 in equity missed | — |
| Net savings from waiting | ~$9,000 | Missed ~$53,000 appreciation |
In most markets, waiting for 20% down costs more in missed appreciation than it saves in PMI. The PMI breakeven point usually favors buying sooner.
How Much the 20% Down Payment Saves on Monthly Cost
Comparing 10% vs. 20% down on a $420,000 home at 7% interest:
| 10% Down | 20% Down | Difference | |
|---|---|---|---|
| Loan amount | $378,000 | $336,000 | — |
| Monthly P&I | $2,515 | $2,235 | $280 |
| PMI | $150 | $0 | $150 |
| Total monthly | $2,665 | $2,235 | $430 |
| 5-year extra cost | — | — | $25,800 |
| 10-year extra cost | — | — | $51,600 |
A 20% down payment saves about $430/month — $5,160 per year.
By Home Price: Time to 20% Down Saving $1,500/Month
| Home Price | 20% Down | Months to Save | Years |
|---|---|---|---|
| $200,000 | $40,000 | 27 | 2.2 |
| $300,000 | $60,000 | 40 | 3.3 |
| $350,000 | $70,000 | 47 | 3.9 |
| $400,000 | $80,000 | 53 | 4.4 |
| $420,000 | $84,000 | 56 | 4.7 |
| $500,000 | $100,000 | 67 | 5.6 |
| $600,000 | $120,000 | 80 | 6.7 |
| $700,000 | $140,000 | 93 | 7.8 |
| $800,000 | $160,000 | 107 | 8.9 |
Alternatives That Don’t Require 20% Down
If the 20% timeline is too long, these options let you close with less:
- FHA loan: 3.5% down with credit score 580+. Down payment on $420K = $14,700
- Conventional 97: 3% down for first-time buyers with good credit
- VA loan: 0% down for eligible veterans and active-duty service members
- USDA loan: 0% down in eligible rural/suburban areas
- State DPA programs: Down payment assistance grants and forgivable loans from state housing agencies
Related: How Long to Save for a House Down Payment | Income Needed to Afford a $420,000 House | How to Save $50,000
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