How this calculation works
Plan a savings balance that combines money already invested with equal future additions. Use total invested to see how much of the result comes from your budget and growth to see how much comes from the assumed rate. This uses the same mathematics as the compound-interest calculator; the focus here is testing contribution amounts against a savings plan.
Worked example
This example uses illustrative inputs. Your current result is shown above.
Start with ₹1,00,000 and add ₹10,000 at the end of each year for 2 years at 10% annual interest, compounded annually. The initial balance becomes ₹1,21,000; the additions become ₹21,000. Final balance is ₹1,42,000, comprising ₹1,20,000 invested and ₹22,000 growth.
Assumptions and limits
- The contribution repeats at the selected compounding frequency, not necessarily monthly.
- The annual rate is nominal and divided by periods per year; additions are made at period-end.
- There are no skipped contributions, withdrawals, investment fees or taxes in this scenario.
Questions people ask
Where do I enter savings I already have?
Enter the current balance as principal. The regular contribution field is only for new money added each period, so entering the same existing savings there would double count them.
Can this test an increasing monthly budget?
The contribution is fixed here. Use the step-up SIP calculator to model a monthly contribution that rises by a chosen percentage each year.
Will this differ from the compound-interest calculator?
Not with identical inputs: both use the same engine. Use this page for contribution planning or the compound-interest page to study crediting frequency; they are not independent return forecasts.