ZumaTools

Savings Goal Calculator

Enter your goal, current savings, monthly deposit and interest rate to see exactly when you’ll reach it.

Time to goal

2 yr 6 mo

Around Jan 2029 · 30 months of saving

MilestoneAmountInDate
25%2,5002 monthsSep 2026
50%5,0001 yearJul 2027
75%7,5001 yr 9 moApr 2028
100%10,0002 yr 6 moJan 2029

Hit the goal by a date instead

Required monthly deposit

202.86

per month for 3 years to reach 10,000 by Jul 2029

Estimates assume a constant rate with monthly compounding — not financial advice. Calculated on your device; nothing is sent anywhere.

How it works

  1. Enter your goal amount, what you have saved so far, your planned monthly contribution and the annual interest rate.
  2. Read the time to goal and the milestone table showing when you pass 25, 50, 75 and 100 percent.
  3. Pick a target month in the second panel to see the monthly deposit required to hit the goal by that date.

Frequently asked questions

How does the savings goal calculator work out the time to my goal?
It simulates your balance one month at a time: each month the balance earns one twelfth of the annual rate, then your contribution is added. The month your balance first crosses the goal is your answer, and the same simulation records when you pass 25, 50 and 75 percent for the milestone table.
How is the required monthly amount for a target date calculated?
It uses the standard future-value formula in reverse: your current savings are grown at the monthly rate until the target month, and the remaining gap is divided across the deposits using the annuity factor. If your existing savings alone would reach the goal by that date, the required deposit is zero.
What interest rate should I enter?
Use the annual rate of wherever the money actually sits. High-yield savings accounts typically pay a few percent, regular checking often close to zero, and invested money is more volatile — a conservative long-term estimate is safer than a recent good year. Enter 0 if the money earns nothing; the math still works.
Is my financial data private?
Yes. Everything is calculated locally in your browser with plain JavaScript — no figures are uploaded, stored or sent to any server. You can enter real balances from your own accounts without any of it leaving your device.
Does the calculator account for taxes or inflation?
No. Results are nominal amounts before any tax on interest and without inflation adjustment. For a goal several years away, a common approach is to increase the goal amount by expected inflation, or to subtract the inflation rate from your interest rate to work in today’s purchasing power.

About this tool

This savings goal calculator answers the two questions every saver actually asks: when will I get there, and how much do I need to put aside to get there by a specific date. Enter the goal amount, what you have saved so far, your monthly contribution and an annual interest rate, and the answer updates as you type — no submit button, no waiting.

Under the main result, a milestone table shows the calendar month you are projected to pass 25, 50, 75 and 100 percent of the goal. Milestones matter psychologically: the halfway date is usually much closer than half the total time, because interest does progressively more of the work as the balance grows. The second panel works in reverse — choose any future month and it computes the exact monthly deposit needed to land on the goal by then, using the standard future-value annuity formula.

Everything runs client-side in your browser. The month-by-month simulation applies one twelfth of the annual rate to the balance, adds your deposit, and repeats — the same way a savings account with monthly compounding behaves. None of the numbers you enter are transmitted anywhere, which makes the tool safe for real account balances and real goals: an emergency fund, a house down payment, a car, a wedding or a sabbatical.

Two practical tips. First, if your timeline looks too long, test a slightly higher monthly amount — because deposits dominate early growth, even a modest increase moves the goal date more than a higher interest rate does on short horizons. Second, for goals under two or three years, keep the rate conservative and the money somewhere stable; interest is a rounding error at that distance, and consistency of deposits is what actually decides the date.

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