A down payment savings calculator answers the specific question first-time buyers need: given my deposit target and my timeline, what do I need to set aside each month? The default is pre-filled with a $60,000 down payment goal over 36 months — adjust it to your own numbers.
This calculator handles the savings side of home buying. It shows the exact monthly contribution, the interest your account earns along the way, and a month-by-month breakdown. It does not model the mortgage — that is a separate calculation for when you are closer to purchase.
Choosing your down payment target
Down payment requirements vary by loan type. A conventional loan can accept as little as 3–5% down, though under 20% typically adds private mortgage insurance (PMI). FHA loans require 3.5% with a credit score of 580+. A 20% down payment eliminates PMI and reduces monthly mortgage payments — which is why many buyers target exactly that amount.
Enter your target home price and multiply by your intended down payment percentage to get your savings goal. If you are saving toward $400,000 at 15%, your goal is $60,000. The calculator above is pre-filled with that example.
Choosing the right savings vehicle
Down payment funds need to be safe, liquid, and growing. A high-yield savings account (HYSA) hits all three: currently paying 4–5% APY with full FDIC insurance and no restriction on when you can access the money. CDs can lock in slightly higher rates if you have a firm purchase timeline and will not need early access.
Most mortgage lenders require that down payment funds have been sitting in your account for 60–90 days (the "seasoning" requirement) before closing. Keep this in mind as your purchase date approaches — moving money around too close to closing can complicate the approval.
What to do if the monthly number is too high
If the required monthly is above what your budget allows, you have two levers: extend the timeline or reduce the target. Extending from 36 to 48 months on a $60,000 goal drops the monthly requirement by about $360 — a significant relief. Reducing your down payment target from 20% to 10% cuts the goal in half, though it changes your mortgage terms.
Enter your actual comfortable monthly saving amount in Mode A to see how long that pace takes to reach $60,000. The difference between the two timelines often clarifies which lever to pull.
Frequently asked questions
How much should I save for a down payment each month?
It depends on your goal amount and timeline. For a $60,000 down payment in 3 years at 4% APY, you need about $1,590/month. In 4 years, about $1,160/month. Enter your specific numbers above for the exact figure.
How long does it take to save a 20% down payment?
It depends on the home price and what you can save monthly. On a $300,000 home (20% = $60,000), saving $1,000/month takes about 57 months; $1,500/month takes about 37 months. Use the calculator above with your target home price.
Can I use a 401(k) or Roth IRA for a down payment?
First-time buyers can withdraw up to $10,000 from a Roth IRA penalty-free for a home purchase. 401(k) withdrawals typically trigger taxes and a 10% penalty unless you qualify for an exception. These are options to discuss with a tax advisor — not the first choice for most buyers.
Should I stop investing while saving for a down payment?
Generally: keep contributing enough to capture any employer 401(k) match (that is free money), but you may choose to pause or reduce above-match investing while in the savings sprint. Run the numbers on both paths — a mortgage calculator (coming soon) can show whether the home purchase creates enough net wealth to justify temporarily slower retirement savings.
Worked examples
Each scenario below is computed by the same engine that powers the calculator above — not hand-estimated. Change the inputs above to see how your own numbers compare.
$60,000 down in 3 years
Targeting a $60,000 down payment on a $300,000 home in 36 months at 4% APY.
- Goal amount
- $60,000
- Deadline
- 3 yr
- Annual rate
- 4%
- Total contributed
- $56,572
- Interest earned
- $3,428
Over 3 years at 4%, interest contributes about $1,380 — meaningful, but your monthly discipline does the heavy lifting. The HYSA earns you roughly one extra month.
$25,000 starter down payment in 2 years
Saving $25,000 for a 10% down payment on a $250,000 starter home, with $3,000 already set aside.
- Goal amount
- $25,000
- Deadline
- 2 yr
- Starting balance
- $3,000
- Annual rate
- 4%
- Total contributed
- $23,928
- Interest earned
- $1,072
The $3,000 head start reduces the required monthly and earns 24 months of interest — each dollar already saved is worth more than a dollar contributed later.
Monthly savings required for common down payment goals
Monthly savings required (rows = goal amounts, columns = deadline months) at a fixed 4% APY with no starting balance.
| Down payment goal | 1 yr 6 mo | 2 yr | 3 yr | 4 yr | 5 yr |
|---|---|---|---|---|---|
| $20,000 | $1,080 | $802 | $524 | $385 | $302 |
| $40,000 | $2,160 | $1,604 | $1,048 | $770 | $603 |
| $60,000 | $3,240 | $2,405 | $1,571 | $1,155 | $905 |
| $80,000 | $4,320 | $3,207 | $2,095 | $1,540 | $1,207 |
| $100,000 | $5,400 | $4,009 | $2,619 | $1,925 | $1,508 |
Rate: 4% APY (current HYSA rate range). Add closing costs (2–5% of loan) to your savings target to avoid arrival short.
What affects your results
These are the real inputs that move the needle — ranked by how much each one changes your outcome. All rates in this calculator are user-supplied; this tool does not access live market data.
Your down payment target sets the entire savings plan. A 10% vs. 20% down payment on the same home doubles the goal — but 10% gets you into the market sooner and eliminates the wait.
Extending your timeline from 24 to 36 months on a $60,000 goal cuts the required monthly by about $555. Timeline flexibility is the most powerful lever for making the monthly number feasible.
Any funds already earmarked for the down payment should be entered as the starting balance — they earn interest across the full timeline and reduce the required monthly.
On a 3-year, $60,000 goal, the gap between a 0.5% standard account and a 4.5% HYSA is about $1,200 in interest — worth the 10 minutes to open a HYSA.
Common mistakes to avoid
- ✕
Saving only the down payment and ignoring closing costs (2–5% of the loan amount). Arrive at a $300,000 home with a $60,000 down payment and you may still need $6,000–$15,000 more at closing.
- ✕
Using a regular savings account when HYSAs are available. On a 3-year, $60,000 goal, you give up over $1,000 in interest.
- ✕
Not accounting for the lender's 60–90 day seasoning requirement. Down payment funds usually need to be in your account for at least 60 days before closing — do not shift money the week before.
Key takeaways
- ✓
Add 5% of the purchase price to your savings goal to cover closing costs and a move-in buffer. Enter this higher target in the calculator to avoid arriving short.
- ✓
Keep your down payment savings in a dedicated, named HYSA that is separate from your emergency fund. Mixing them makes it too easy to borrow from the house fund during a tough month.
- ✓
Review the plan quarterly and enter your current balance as the starting balance each time you update. This recalibrates the required monthly to reflect actual progress.
More questions answered
How much do I need for a down payment?
Conventional loans: 3–20% of the purchase price. FHA loans: 3.5%. VA/USDA loans: 0% for qualifying buyers. In addition to the down payment, budget 2–5% of the loan for closing costs and $5,000–$15,000 for a move-in reserve.
How long does it take to save a 20% down payment?
It depends on the home price and your monthly savings rate. On a $400,000 home (20% = $80,000), saving $1,500/month at 4% APY takes about 50 months. At $2,000/month: about 37 months. Use Mode B above with your specific numbers.
Should I save for a down payment or invest?
Down payment funds earmarked for use within 5 years belong in a HYSA, not the stock market. A market correction the year you planned to buy could set you back years. After your down payment is funded, resume investing for long-term goals.
What is the best account for a down payment fund?
A high-yield savings account (HYSA) — FDIC-insured, fully liquid, and currently paying 4–5% APY. For funds you are confident you will not need for at least 12 months, a CD can lock in a slightly higher rate.
Method and assumptions
This calculator projects a savings balance from the numbers you enter. It is an arithmetic model, not a forecast, and not financial advice — a real account’s rate moves over time while this projection holds it constant.
- Month by month, not a single formula
- For “How long?” and “Will I make it?” the balance is stepped forward one month at a time — each month it earns interest, then your contribution is added — until it reaches your goal or the deadline arrives. That is why the month-by-month breakdown is the same run you see at the top, not a separate approximation.
- How the monthly rate is derived
- Your annual rate is divided by twelve to get the monthly rate — a 4% annual rate applies about 0.333% each month. This is a plain division, not a compounding -equivalent rate, so an account’s advertised APY — which already folds in that month-on-month compounding — runs slightly above the rate you type here.
- When contributions land
- Each contribution is added at the end of its month, after that month’s interest has accrued — the end-of-period (ordinary-annuity) convention. Depositing at the start of each month instead would earn one extra month of interest per contribution, so treat this projection as the conservative side of that choice; the tool does not claim the earlier-deposit upside.
- How interest builds up
- Interest each month is figured on the running balance — your starting balance plus every contribution and every prior month’s interest so far — never on the goal amount. Early on the balance is small, so the interest is modest; it grows more than proportionally as the balance fills in, which is why a longer timeline earns disproportionately more. Over the whole plan the interest shown is simply your goal minus what you actually paid in (contribution × number of months).
- The required monthly amount
- For “How much per month?” the calculator applies the closed-form annuity payment formula directly — from your goal, deadline, rate, and starting balance — then verifies the answer by stepping through the deadline month by month, adding that contribution and one month’s interest on the running balance to confirm it lands on your goal.
- Inflation adjustment
- With the inflation toggle on, the goal itself is grown by your inflation rate, compounded once a year over the length of the plan, so the target you solve for is what the goal will cost in future dollars. See nominal vs. real figures for the distinction.
- What is not modelled
- Taxes on interest, account fees, and any early-withdrawal penalty are excluded. The rate is held constant, so a mid-plan rate change and sequence-of-returns risk are not captured, and nothing about where you keep the money is modelled beyond the rate you enter — a taxable account will trail these figures, while a high-yield savings account at a steady advertised rate tracks them most closely.