This calculator simulates month-by-month investing where your SIP can change across phases (for example, ₹13,000 for 12 months, then ₹14,300 for the next 12) and where you add lumpsums in specific months (such as a bonus in month 9).
About this calculator
This calculator simulates month-by-month investing where your SIP can change across phases (for example, ₹13,000 for 12 months, then ₹14,300 for the next 12) and where you add lumpsums in specific months (such as a bonus in month 9). Each month, your contribution plus any lumpsum is compounded at the monthly rate derived from your annual return.
Use it when a flat SIP or a single global annual step-up does not match how you actually invest.
Common uses
- Model a salary hike as a new SIP phase instead of a fixed yearly percentage
- Add a bonus or windfall in a chosen month and see the impact on the final corpus
- Compare schedules with different phase lengths before committing in your investment app
- Validate that phase durations match your full investment horizon in months
- Build a step-up SIP schedule with a constant annual hike using yearly phases in detailed view
- Compare flexible SIP vs lump sum or flat SIP scenarios for retirement or education goals
Frequently asked questions
Why must phase durations add up to my full tenure?
Each month must have exactly one SIP amount in the schedule. The sum of phase lengths in months equals your total horizon so there are no gaps or overlaps. If the numbers do not match, the calculator asks you to fix the schedule instead of guessing.
Can I put two lumpsums in the same month?
Yes. Enter two rows with the same month number and they are added together before compounding for that month.
Why can I not enter more than 60 months of SIP phases when tenure is five years?
Five years × 12 equals 60 months—that is your full horizon. Increase tenure (years) to allow longer schedules; phase months cannot exceed the total months for the plan.
Is this an ELSS SIP calculator or only equity?
The math works for any mutual fund category. ELSS has tax lock-in rules per instalment—this tool estimates growth from your inputs; verify lock-in and taxation separately.