Understand your SIP projection
Learn what drives the estimate and which real-world factors remain outside the calculation.
How to use the SIP calculator
- Enter the planned monthly contribution.
- Enter an expected annual return as an assumption, not a promise.
- Choose the duration and compare invested amount with estimated value.
How contribution, return, and duration affect results
Higher contributions increase the amount invested. A higher assumed return or longer duration raises the projection, but actual market outcomes may differ materially.
Compounding over longer durations
Projected returns can themselves generate later returns. Time therefore has a nonlinear effect, although market returns do not arrive smoothly or at a guaranteed rate.
Invested amount versus estimated returns
Invested amount is the sum of contributions. Estimated returns are the projected value minus those contributions and can be negative in real investments.
Beginning-of-month contribution assumption
Benefits of disciplined investing
- Creates a regular contribution habit.
- Spreads contributions across different market dates.
- Makes progress easier to review against a long-term plan.
Limitations and assumptions
The projection uses a constant assumed return. It does not model volatility, inflation, taxes, fees, missed contributions, or product-specific rules unless explicitly stated.
Common SIP calculation mistakes
- Treating the assumed return as guaranteed.
- Ignoring fees, taxes, inflation, or volatility.
- Confusing annual and monthly return rates.
- Assuming contributions always occur on the modeled date.
Practical tips
- Test a range of return assumptions.
- Review invested amount separately from projected gains.
- Use a duration that reflects the decision being explored.
- Revisit assumptions when circumstances change.
SIP versus lumpsum
| Factor | SIP | Lumpsum |
|---|---|---|
| Contribution pattern | Regular contributions | One-time contribution |
| Market timing exposure | Spread across contribution dates | Entire amount enters at one point |
| May suit users who | Prefer investing from periodic cash flow | Already have an amount available |
| Outcome depends on | Contribution consistency, market path, fees, and taxes | Market path, holding period, fees, and taxes |