Down Payment Savings Calculator: Monthly Amount to Save
Work out how much to save each month to have a home down payment ready by the date you plan to buy.
Adjust the inputs and select Calculate for a full breakdown.
Compare Common Scenarios
How the numbers shift across typical situations for this calculator:
| Scenario | Monthly contribution | Total contributed | Growth toward goal |
|---|---|---|---|
| $60k · 3% · 5yr | $928.12 | $55,687.29 | $4,312.71 |
| $30k · 2.5% · 3yr | $803.34 | $28,920.29 | $1,079.71 |
| $80k · 4% · 7yr | $826.84 | $69,454.38 | $10,545.62 |
| $45k · 3.5% · 4yr | $874.77 | $41,988.96 | $3,011.04 |
How This Calculator Works
Enter the down payment you are aiming for, the rate your savings earn, and the years until you want to buy. The calculator solves for the monthly contribution that reaches the goal, and splits the target into your deposits and investment growth.
The Formula
Required Monthly Saving (Sinking Fund)
FV = goal amount, r = monthly rate (annual ÷ 12), n = number of months
Worked Example
Saving toward a $60,000 down payment over 5 years at a 3% return takes about $928 a month. Your deposits make up roughly $55,700, and growth adds the remaining $4,300 of the goal.
Key Insight
Money you will need within a few years is best kept safe rather than invested, because a market dip just before you buy could shrink the down payment. A short horizon means the monthly contribution, not the rate, does the work.
The 20% myth and what down payment you actually need
The '20% down payment' standard is more flexible than buyers think. Conventional loans require 5-20% down (3% for some first-time buyer programs). FHA loans: 3.5% down with credit score 580+. VA loans (veterans): 0% down. USDA loans (rural): 0% down. With FHA and 3.5% down, a $400k home requires just $14,000 — not $80,000.
Why 20% is still the target: avoids PMI (Private Mortgage Insurance, costs $200-400/month on a $400k loan, paid until equity reaches 20%), gives better interest rates, lower monthly payment, and stronger negotiating position with sellers. PMI is essentially a wealth tax on having low equity.
Strategic implication: aim for 10-20% down on conventional loans. If you can only manage 3-5%, FHA loans work but cost more long-term (PMI is permanent on FHA — never goes away without refinancing). The 'rent until you save 20%' advice often wastes years for buyers in stable income situations who could responsibly buy at 10% down. Run the numbers for both scenarios — 'PMI for 5 years' vs '5 more years of rising rent + delayed equity building' usually favors the earlier purchase with PMI.
Down payment + closing costs + reserves: the true upfront cash
Down payment is just one component of cash-to-close. Closing costs add 2-5% of purchase price: loan origination fees, appraisal ($500-800), inspection ($400-600), title insurance ($1,000-3,000), prepaid taxes/insurance escrow (2-3 months reserve), recording fees, etc. On a $400k home: $8,000-20,000 of closing costs.
Lender 'reserves' requirement: most conventional lenders require 2 months of PITI in savings AFTER closing (3-6 months for investment properties). On a $3,500/month PITI: $7,000-21,000 of additional liquid reserves needed in the bank account at closing.
Total upfront cash for a $400k home with 20% down: $80,000 (down) + $14,000 (closing costs at 3.5%) + $7,000 (2-month reserve) = $101,000 minimum. With 10% down + PMI: $40,000 + $14,000 + $7,000 = $61,000 + the ongoing PMI burden. Most first-time buyers underestimate by 30-50% — leading to scrambling at closing or having to bring less than planned.
Where to save the down payment: HYSA vs invest
Down payment savings should be in safe, liquid accounts because the time horizon is short and price stability matters more than return. NEVER in stocks or volatile assets — a 30% market drop the month before closing could derail your purchase entirely.
Right places, by horizon: (1) Closing within 12 months: high-yield savings account (4-5% APY) or money market fund. Treasury bills for any portion you're sure won't be touched in the next 4 weeks. (2) Closing in 1-3 years: same as above, plus consider 6-12 month CDs (slightly higher rates with hard lockup acceptable for the deeper tranche).
(3) Closing in 3-5 years: more flexibility, but still mostly cash equivalents. Some buyers use a conservative 30/70 stocks-bonds portfolio for the 'deep' tranche, accepting some volatility for higher expected returns over 3+ years. (4) Closing 5+ years away: this isn't really a 'down payment' yet — it's long-horizon savings. Treat as part of broader investment portfolio. The exact balance shifts based on visibility into when you'll buy.
Total cash-to-close requirements by down payment percentage ($400k home)
Full upfront cash needed including down payment, closing costs, and lender-required reserves.
| Down payment | Down payment $ | Closing costs (3.5%) | Reserves (2 mo PITI) | Total cash needed |
|---|---|---|---|---|
| 3.5% (FHA) | $14,000 | $14,000 | $7,500 | $35,500 |
| 5% | $20,000 | $14,000 | $7,200 | $41,200 |
| 10% | $40,000 | $14,000 | $6,900 | $60,900 |
| 15% | $60,000 | $14,000 | $6,600 | $80,600 |
| 20% (avoids PMI) | $80,000 | $14,000 | $6,300 | $100,300 |
PITI assumed ~$3,500/month with PMI (higher for lower down payments), $3,150 without PMI (20% down). For VA loans, 0% down + reduced closing costs (no funding fee for disabled veterans). Closing cost estimates assume conventional loan with $400k purchase price.
Frequently Asked Questions
How big a down payment do I need?
A 20% down payment avoids private mortgage insurance on most loans, but many programs accept far less. Set the goal to the figure your loan type and budget require.
Where should I keep down payment savings?
For a purchase within a few years, a safe account such as a high-yield savings account or short-term CD protects the money from a market drop right before you buy.
Should I invest the down payment savings?
For a near-term purchase, generally no — a downturn could cut the fund just when you need it. A longer horizon allows more room for investment.
What if home prices rise while I save?
A rising market raises the down payment you need. Revisit the goal periodically and compare it against the cited median home price benchmark.
Does this include closing costs?
No. Closing costs are separate and typically add a few percent of the price. Consider raising the goal to cover them alongside the down payment.
References & Authoritative Sources
- CFPB — Consumer Financial Protection Bureau — Mortgage cash-to-close and closing costs explained · consulted May 31, 2026 · Federal consumer protection — closing cost disclosure rules, Loan Estimate, Closing Disclosure
- FHA — Federal Housing Administration — FHA loan limits and down payment requirements · consulted May 31, 2026 · Federal mortgage insurer — 3.5% down requirements, MIP rates, FHA loan limits
- Fannie Mae and Freddie Mac — Conventional loan guidelines and PMI removal · consulted May 31, 2026 · Conventional loan investors — guidelines for 5/10/15/20% down, PMI automatic termination at 78% LTV
Related Calculators
Data Sources & Benchmarks
This calculator draws on 3 independent, dated sources. The starting values for savings return rate are taken from the benchmarks below and refresh whenever the snapshots are updated.
Methodology & Review
The required monthly contribution solves the future-value-of-an-annuity formula for the payment that reaches the down payment target. The model compounds monthly at a steady rate.
Updated