- Starting amount
- 10000
- Annual return rate
- 7%
- For how many years?
- 10
- Deposit each period
- 200
- How many periods a year?
- 12
54,713.58
Open with these values54,713.58
Result: 54,713.58Two things grow at once: the amount you start with, and the deposits you keep adding. Deposits are counted at the END of each period, and the annual rate is split across the periods — 7 % over twelve periods is twelve times 0.583 %, not one times 7 %.
Held fixed: Starting amount 10,000.00, Annual return rate 7.000 %, For how many years? 10, Deposit each period 200.00.
| How many periods a year? | Result |
|---|---|
| 5 | 34,382.86 |
| 10 | 48,912.70 |
| 12Your value | 54,713.58 |
| 15 | 63,410.90 |
| 20 | 77,901.11 |
54,713.58
Open with these values205,516.83
Open with these values1,331.00
Open with these valuesFV = PV × (1 + r)^n + PMT × ((1 + r)^n − 1) ÷ r
This is an ordinary annuity, the convention of the source formula. A deposit made at the start of each period earns one period more interest and would raise the ten-year projection from 54713.58 to 54915.51.
7 % at twelve periods a year is twelve times 0.583 %, not a single 7 %. The number of periods also sets how often you deposit.
With no deposit only the starting amount grows: 1000 at 10 % over three years is 1331. Set the starting amount to 0 instead to project a savings plan that begins from nothing.
It adjusts for neither inflation nor taxes nor fees. Enter a real, inflation-adjusted rate to read the result in today's money.
The rate I enter is what each period earns.
It is the nominal annual rate, which the calculator divides by the periods per year. At 7 % over twelve periods each month earns 0.583 %.
My plan pays at the start of the month, so this figure fits.
The formula counts deposits at the end, so the number here is the conservative one. A start-of-period plan reaching 54915.51 shows here as 54713.58.
The result tells me what the money will buy.
Only in today's money, and only if you entered a real rate. A nominal rate gives a nominal balance, with inflation, taxes and fees still ahead of it.
| Start, rate, years, deposit, periods | Total paid in | Future value |
|---|---|---|
| 1000, 10, 3, 0, 1 | 1000 | 1331.00 |
| 10000, 7, 10, 200, 12 | 34000 | 54713.58 |
| 0, 5, 20, 500, 12 | 120000 | 205516.83 |
| 5000, 6, 15, 100, 12 | 23000 | 41352.34 |
| 10000, 0, 10, 100, 12 | 22000 | 22000.00 |
| 8000, 7, 0, 200, 12 | 8000 | 8000.00 |
Future value is what a sum of money will be worth at a later date, given a rate of return and how often it compounds. A sum invested today grows because it earns a return on both the principal and the interest already added. This calculator also includes regular contributions, so it projects a starting amount and ongoing deposits together.
Use FV = PV × (1 + r)^n + PMT × ((1 + r)^n − 1) ÷ r, where PV is the starting amount, PMT each deposit, r the periodic rate (annual rate ÷ periods per year) and n the number of periods. The first term grows the lump sum, the second grows the stream of deposits. For 10000 plus 200 a month at 7 % over ten years, that is 54713.58.
At the end — this is an ordinary annuity, the convention the source formula uses. A deposit made at the start of each period earns one extra period of interest, which raises the same ten-year projection from 54713.58 to 54915.51, about 0.4 % more. If your plan really pays at the start of the month, treat the figure here as the conservative one.
Yes. More frequent compounding adds interest sooner, so twelve periods a year produce a slightly higher future value than one, at the same nominal rate. The frequency also sets how often you deposit, so 12 means twelve deposits a year rather than one.
Use a rate that reflects your investment. Cash savings might earn a few percent, while a diversified long-term stock portfolio has historically averaged around 6–8 % before inflation, with large year-to-year swings. Because a long horizon is very sensitive to the rate, run a conservative rate as well.
No — the result is a nominal figure and adjusts for neither inflation nor taxes nor fees. To approximate purchasing power, enter a real, inflation-adjusted rate of return instead of a nominal one. The result is then in today's money.
Information, not financial advice.
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