Project investment growth from a starting balance plus regular monthly contributions. Enter your starting investment and get ending balance and contributions total instantly — no spreadsheet required.
Step 1. Enter your starting investment in the first field.
Step 2. Fill in monthly contribution, rate to complete the required inputs.
Step 3. The calculator instantly shows Ending Balance, Contributions Total, Investment Gain based on the formula: Growth = starting value compounded plus recurring contributions over time.
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 Investment Growth Calculator works by applying the formula: Growth = starting value compounded plus recurring contributions over time. Each input plays a distinct role — small changes to starting investment can shift ending balance significantly, which is why running multiple scenarios before making a decision is valuable.
To use this calculator effectively, gather accurate values for Starting Investment, Monthly Contribution, Rate, Years. Estimates are fine for exploration, but the more precise your inputs, the more actionable the output. The calculator instantly returns Ending Balance, Contributions Total, Investment Gain, giving you a clear picture of where you stand.
This type of investment 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 Investment Growth Calculator gives you a reliable number to work from. Always revisit the calculation if any input changes significantly.
It calculates ending balance, contributions total, investment gain using the formula Growth = starting value compounded plus recurring contributions over time. The inputs required are starting investment, monthly contribution, rate, years.
You need: Starting Investment; Monthly Contribution; Rate; Years. 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: Growth = starting value compounded plus recurring contributions over time. 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.
