House Deposit Savings Plan
Calculator

Inputs

Months to the target
46 mo

Results

Months to the target
46 mo
Years to the target
3.833333 yr
Deposit needed
$89,598.21
Total contributed
$84,000.00

Portfolio value over time

022,72045,43968,15990,878112.323.534.846.0
  • Portfolio balance
  • Deposit needed

Projection schedule

116,543.7580,197.3016,500.0043.75
218,092.0080,395.0918,000.0092.00
319,644.7780,593.3719,500.00144.77
421,202.0780,792.1321,000.00202.07
522,763.9180,991.3922,500.00263.91
624,330.3081,191.1324,000.00330.30
725,901.2781,391.3725,500.00401.27
827,476.8181,592.1027,000.00476.81
929,056.9581,793.3328,500.00556.95
1030,641.7081,995.0630,000.00641.70
1132,231.0782,197.2831,500.00731.07
1233,825.0882,400.0033,000.00825.08
1335,423.7482,603.2234,500.00923.74
1437,027.0682,806.9436,000.001,027.06
1538,635.0583,011.1737,500.001,135.05
1640,247.7483,215.8939,000.001,247.74
1741,865.1383,421.1340,500.001,365.13
1843,487.2383,626.8742,000.001,487.23
1945,114.0783,833.1143,500.001,614.07
2046,745.6584,039.8745,000.001,745.65
2148,381.9984,247.1346,500.001,881.99
2250,023.1184,454.9148,000.002,023.11
2351,669.0184,663.2049,500.002,169.01
2453,319.7184,872.0051,000.002,319.71
2554,975.2385,081.3252,500.002,475.23
2656,635.5785,291.1554,000.002,635.57
2758,300.7685,501.5055,500.002,800.76
2859,970.8085,712.3757,000.002,970.80
2961,645.7285,923.7658,500.003,145.72
3063,325.5286,135.6760,000.003,325.52
3165,010.2286,348.1161,500.003,510.22
3266,699.8386,561.0663,000.003,699.83
3368,394.3786,774.5564,500.003,894.37
3470,093.8586,988.5666,000.004,093.85
3571,798.2987,203.0967,500.004,298.29
3673,507.7187,418.1669,000.004,507.71
3775,222.1087,633.7670,500.004,722.10
3876,941.5087,849.8972,000.004,941.50
3978,665.9188,066.5573,500.005,165.91
4080,395.3688,283.7475,000.005,395.36
4182,129.8488,501.4776,500.005,629.84
4283,869.3988,719.7478,000.005,869.39
4385,614.0188,938.5579,500.006,114.01
4487,363.7289,157.9081,000.006,363.72
4589,118.5389,377.7882,500.006,618.53
4690,878.4589,598.2184,000.006,878.45

Comparison

ScenarioMonths to the targetDeposit needed
Doing nothing40.0080,000.00
Your plan46.0089,598.21

Formula

save until B(n) ≥ price·d·(1+p)^(n/12)

= 46.00

Note

Returns are not guaranteed and this is not investment advice. This projection applies the displayed standard formula to the rates you entered and assumes they repeat, unchanged, every single period. Real markets do not behave that way: returns vary year to year, can be negative, and past or projected performance never guarantees future results. The model ignores taxes, trading costs, currency effects and any fee you did not enter. Treat the figures as an illustration of the arithmetic, not a forecast, and consult a licensed adviser before acting on any of them.

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Frequently asked questions

How does the calculator determine my required monthly savings amount?+

It works backward from your target deposit amount and target date, factoring in your current savings and an assumed return rate, to solve for the level monthly contribution needed to close the gap by the deadline — essentially the reverse of a standard compound growth projection.

Why might the required deposit target itself keep changing if I delay?+

If property prices are rising in your target market, waiting longer to buy generally means the deposit amount (typically a percentage of the purchase price) also rises, so a longer savings timeline can partially or fully offset itself if house prices are appreciating faster than your savings rate.

Should I use an aggressive investment return assumption for a house deposit?+

Most guidance leans conservative here, since a deposit fund is usually needed at a fairly fixed near-term date and can't easily absorb a market downturn right before you need to withdraw it — many people keep this money in cash or low-risk vehicles rather than in volatile investments, even at the cost of a lower expected return.

Does the target deposit amount typically include closing costs, or just the down payment itself?+

Check what you entered — a deposit target limited to the down payment percentage alone will understate what's actually needed, since closing costs, legal fees, and moving costs are real upfront cash requirements on top of the down payment itself.

What happens to the plan if I receive a windfall, like a gift or bonus?+

A lump-sum addition partway through the plan reduces the remaining gap and can shorten the timeline or lower the required ongoing monthly contribution — it's worth re-running the projection with the updated current balance whenever a significant one-time addition occurs, rather than just mentally adjusting the original plan.