BoostCalc · US savings & investing

Free · No sign-up · Updated 2026 · Inflation-aware · Solve monthly or time

Savings Goal Calculator: how much to save each month.

Tell us your target, what you already have, and your timeline. We'll show the monthly amount to get there — or flip it around and see how long a fixed monthly deposit takes, with interest working for you the whole way.

Educational tool only. This calculator and everything on this site is for general information and education. It is not investment, financial, or tax advice, and no result is a recommendation. Returns are estimates — they are not guaranteed and your actual results will differ. Always consider the risks and consult a licensed professional before making financial decisions.

Your goal

Numbers update instantly as you type.

$
$
yr
%
Apply a typical US rate:
Show goal in today's money (inflation)

Save each month

$0
You contribute
$0
Interest earned
$0
Your browser does not support inline charts. Numerical results are shown above.
Contributions Interest

How the rate changes your monthly amount

Same goal, same starting balance, same deadline — only the rate changes. A higher return means a smaller monthly deposit does the job, because interest carries more of the load.

Where your money sitsRateMonthly neededInterest's share

How a savings goal calculator works

A savings goal calculator answers one of the most practical money questions there is: "How much do I need to set aside every month to reach a specific number by a specific date?" Instead of guessing, you give it the target, what you already have, your timeline, and a realistic interest rate. It then runs the math in reverse to find the contribution that lands you exactly on your goal.

The engine is the future-value formula. Each month your balance earns a slice of interest and then you add your contribution. Repeat that month after month and the balance climbs along a gently steepening curve, because the interest you earn starts earning interest of its own. To solve for the monthly amount, the calculator rearranges that formula so the contribution is the unknown — taking into account that your starting balance is also growing the entire time.

Two ways to use it. Switch the toggle to "Monthly needed" when you have a deadline and want to know the deposit. Switch to "Time needed" when you know what you can afford each month and want to see how long the goal takes. Both use the same underlying math — just solved for a different unknown.

Picking a realistic rate

The rate you choose has a real effect on the answer, so match it to your timeline and your tolerance for risk:

Because rates move with the Federal Reserve, test a higher and a lower rate rather than betting on a single number. The comparison table above does exactly that for your goal.

Why inflation matters for goals years away

A goal quoted in plain future dollars can mislead you. A $50,000 target a decade out will not buy what $50,000 buys today, because prices drift upward over time. Turning on the inflation toggle restates your goal in today's purchasing power, which is a useful reality check: if the goal is to fund something real — a down payment, a wedding, a year of tuition — you may need to aim a little higher than the sticker number to keep the same buying power.

How to actually hit the number

The math is the easy part; the habit is what gets you there. A few tactics that consistently help:

Frequently asked questions

How much should I save each month to reach my goal?
Enter your target amount, what you already have saved, your expected annual return, and your deadline in years. The calculator solves for the monthly contribution that, with interest, grows to the goal. As an illustrative example, reaching $20,000 in 5 years at 4.5% with nothing saved needs roughly $298 a month, of which about $2,100 comes from interest rather than your own deposits. Plug in your own numbers above.
What return rate should I assume?
For a short goal you plan to spend within a few years, a high-yield savings account or CD rate (recently around 4–5% APY) is a common, lower-risk choice. For goals more than a decade away, some savers use a long-run inflation-adjusted stock estimate near 7%, accepting higher risk and no guarantee. There is no guaranteed rate, so it's wise to test a range.
What if the monthly amount is more than I can afford?
You have three levers: extend the timeline, raise the rate by choosing a higher-yielding (and usually higher-risk) account, or lower the goal. Switch to "Time needed" mode, enter what you can realistically contribute, and the calculator will show you the honest date you'd reach the target.
Does it store my numbers anywhere?
No. The calculator runs entirely in your browser and never sends your figures to a server, and no account is required. The "copy link" button simply encodes your inputs into the web address so you can bookmark or share a scenario. This site does show third-party ads (Google AdSense), and those services may set cookies; see our Privacy Policy for details and your choices.
About the figures. Typical US savings, CD, and stock-market returns referenced here are drawn from widely reported public data including the Federal Reserve (interest rates), the FDIC (deposit insurance, up to $250,000 per depositor per institution), and long-run S&P 500 averages. Rates change frequently and individual results vary. This tool is for education only and is not financial, investment, or tax advice. Always consider risk before investing.