finance calculator
Forecast savings growth and monthly deposits needed to reach a goal.
Return when your deposit amount, rate, or target date changes so your savings plan stays current.
Projected savings balance
$25,995
Formula
Balance after each month = previous balance × (1 + monthly rate) + monthly depositThe savings calculator compounds the current balance monthly and adds the planned deposit at the end of each month. Total deposits and interest earned are separated for clarity.
Step by step
Example
With $5,000 saved, $300 added monthly, and a 4% annual rate for 5 years, the calculator shows the projected ending balance plus how much came from deposits versus interest.
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Summary
Future balance
$25,995
Projected ending savings balance.
Total deposits
$23,000
Starting balance plus monthly deposits.
Interest earned
$2,995
Estimated growth from interest.
Savings period
60 months
5 year horizon.
D3 visualization
Separate the money you add from the interest earned over time.
D3 visualization
A sampled monthly projection shows how the balance builds over the selected horizon.
Guide
The savings calculator projects how a starting balance and recurring monthly deposits may grow over time with monthly compounding. It separates total deposits from earned interest so the final balance is easier to understand.
Use it for emergency funds, home savings, vacation funds, education savings, or any goal where regular deposits matter more than a one-time lump sum.
Enter your current savings, planned monthly deposit, annual interest rate, and time horizon. Review the projected balance, total deposits, and interest earned.
If the projected balance is too low, test a higher deposit, longer timeline, or better rate. The line chart helps show whether progress is mostly from deposits or compounding.
The calculator converts the annual rate to a monthly rate, compounds the current balance each month, and then adds the monthly deposit. This repeats for the full number of months.
The output is an estimate. Real savings accounts can have changing rates, fees, withdrawal activity, and deposit timing differences.
Monthly deposit
The recurring amount added to savings each month.
Compounding
Interest earning interest as the balance grows.
Future value
The projected ending balance after deposits and interest.
Yes. The calculator compounds the balance monthly and adds the planned deposit each month.
Yes. It works well for estimating how regular deposits build toward a cash reserve goal.
Compounding starts slowly because the balance is smaller early in the timeline.