Project savings growth with compound interest and regular monthly deposits. Enter your starting balance and get future savings and total deposits instantly — no spreadsheet required.
Step 1. Enter your starting balance in the first field.
Step 2. Fill in regular contribution, monthly rate to complete the required inputs.
Step 3. The calculator instantly shows Future Savings, Total Deposits, Interest Earned based on the formula: FV = P×(1+r/n)^(n×t) + PMT×[((1+r/n)^(n×t)−1)/(r/n)]; P=starting balance, PMT=periodic contribution, r=annual rate, n=compounds/year, t=years [annuity-immediate — no trailing factor].
With the default inputs loaded in the form, the calculator produces a starting result you can use as a baseline. Change one field at a time to compare a new scenario.
The Compound Savings Calculator works by applying the formula: FV = P×(1+r/n)^(n×t) + PMT×[((1+r/n)^(n×t)−1)/(r/n)]; P=starting balance, PMT=periodic contribution, r=annual rate, n=compounds/year, t=years [annuity-immediate — no trailing factor]. Each input plays a distinct role — small changes to starting balance can shift future savings significantly, which is why running multiple scenarios before making a decision is valuable.
To use this calculator effectively, gather accurate values for Starting Balance, Regular Contribution, Monthly Rate, Years. Estimates are fine for exploration, but the more precise your inputs, the more actionable the output. The calculator instantly returns Future Savings, Total Deposits, Interest Earned, giving you a clear picture of where you stand.
This type of savings calculation is commonly used in real planning scenarios — not just academic exercises. Whether you are comparing options, setting a target, or checking your current position, the Compound Savings Calculator gives you a reliable number to work from. Always revisit the calculation if any input changes significantly.
It calculates future savings, total deposits, interest earned using the formula FV = P×(1+r/n)^(n×t) + PMT×[((1+r/n)^(n×t)−1)/(r/n)]; P=starting balance, PMT=periodic contribution, r=annual rate, n=compounds/year, t=years [annuity-immediate — no trailing factor]. The inputs required are starting balance, regular contribution, monthly rate, years.
You need: Starting Balance; Regular Contribution; Monthly Rate; Years; Compounding Frequency. Use accurate figures from your actual situation for the most useful result.
Results are mathematically precise given the inputs you provide. The formula used is: FV = P×(1+r/n)^(n×t) + PMT×[((1+r/n)^(n×t)−1)/(r/n)]; P=starting balance, PMT=periodic contribution, r=annual rate, n=compounds/year, t=years [annuity-immediate — no trailing factor]. Accuracy depends on how precise your input values are — estimates work for planning, but use exact figures for final decisions.
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Disclaimer: Results from this calculator are for informational and planning purposes only and do not constitute financial, legal, or professional advice. Always verify important calculations with a qualified professional.
