Start with the return question
An investment return is the change in the value of money over a chosen period. If ₹50,000 becomes ₹58,000, the gain is ₹8,000, or 16% before timing, costs, or taxes. The right measure depends on cash flows: a one-time holding may use CAGR; a SIP or withdrawals needs a cash-flow-aware measure. A calculation is an estimate, not a promise.
Absolute return, annualised return and CAGR
Absolute return measures the change between the starting and ending values. It is easy to read but can mislead across different holding periods. Annualised return puts growth on a yearly scale; CAGR is the smoothed compounded rate connecting two endpoints. It hides the path taken and does not show volatility. For recurring contributions or withdrawals, use a cash-flow-aware measure rather than forcing a single CAGR onto them.
How compounding changes the picture
Compounding means returns left invested can earn later returns. At an assumed 8% annually, ₹1,00,000 becomes ₹1,08,000 after one year and about ₹1,16,640 after two if the full balance stays invested. The second increase is calculated on the larger amount. Actual products differ in crediting, fees, taxes, prices, and cash flows, so state the assumptions and treat projections as planning illustrations.
Use returns for goals, not just rankings
Connect returns to a goal such as education, a house deposit, or retirement. Start with the future amount, time available, and sustainable contributions; test more than one return assumption. A higher assumption may lower the required saving today but increases shortfall risk. Keep the goal amount separate from the assumed return and account for inflation, which can make nominal growth look stronger than its real purchasing-power increase.
Volatility, timing and withdrawals
Two portfolios can finish at the same value but feel very different along the way. Volatility matters because a fall near a goal date may force a change in plans. A longer horizon does not eliminate loss. Withdrawals during a weak market can also leave fewer units to participate in a recovery, so test corpus, amount, frequency, duration, and return. A scenario is not a safe-income certification; keep near-term cash needs separate.
A practical workflow with PaisaCalc
Use the CAGR Calculator for a one-time holding’s start value, end value, and period. Use the Compound Interest Calculator to test an assumed rate and reinvestment. The Education Goal Calculator connects a future cost to time and saving; the SWP Calculator models periodic withdrawals. Run conservative and optimistic scenarios, note costs and timing, and review the plan when income, timeline, or goal changes. If the required contribution is unsustainable, adjust the goal or date rather than simply increasing the assumed return.
Questions to ask before trusting a result
Check whether an input is a current value, original contribution, or future target. Confirm years, contribution timing, withdrawal pattern, and whether the model lets a balance reach zero. Then ask what is excluded: fees, taxes, inflation, market losses, irregular deposits, and liquidity constraints. Keep a dated record and revisit it after a major life change. Planning is about plausible outcomes, not finding one perfect percentage.
SIP investing versus a bank fixed deposit (FD)
SIP in a mutual-fund scheme
- What it is
- A method for investing a chosen amount periodically in a selected mutual-fund scheme; it is not itself a separate investment product.
- Cash-flow pattern
- Regular contributions buy scheme units at the applicable NAV on each investment date.
- Return and risk
- Value is market-linked and can rise or fall. A SIP does not remove market risk or guarantee a gain.
- How to compare
- Use a cash-flow-aware return measure for periodic contributions and read the scheme’s current risk disclosures.
- Before choosing
- Check whether the goal horizon and ability to tolerate fluctuations fit the selected scheme; test lower-return scenarios.
Bank fixed deposit (FD)
- What it is
- A bank term deposit placed under the bank’s stated product and tenure terms.
- Cash-flow pattern
- Usually a lump sum is committed for a chosen tenure; payout and reinvestment options depend on the deposit selected.
- Return and risk
- The rate and terms are stated by the bank for the deposit; renewal, early withdrawal, tax, and inflation still affect the outcome.
- How to compare
- Compare the current quoted rate, tenure, interest-crediting or payout method, maturity terms, and applicable tax.
- Before choosing
- Check the bank’s current deposit schedule and early-closure terms; do not assume a future renewal rate will be unchanged.
| Question | SIP in a mutual-fund scheme | Bank fixed deposit (FD) |
|---|---|---|
| What it is | A method for investing a chosen amount periodically in a selected mutual-fund scheme; it is not itself a separate investment product. | A bank term deposit placed under the bank’s stated product and tenure terms. |
| Cash-flow pattern | Regular contributions buy scheme units at the applicable NAV on each investment date. | Usually a lump sum is committed for a chosen tenure; payout and reinvestment options depend on the deposit selected. |
| Return and risk | Value is market-linked and can rise or fall. A SIP does not remove market risk or guarantee a gain. | The rate and terms are stated by the bank for the deposit; renewal, early withdrawal, tax, and inflation still affect the outcome. |
| How to compare | Use a cash-flow-aware return measure for periodic contributions and read the scheme’s current risk disclosures. | Compare the current quoted rate, tenure, interest-crediting or payout method, maturity terms, and applicable tax. |
| Before choosing | Check whether the goal horizon and ability to tolerate fluctuations fit the selected scheme; test lower-return scenarios. | Check the bank’s current deposit schedule and early-closure terms; do not assume a future renewal rate will be unchanged. |
A SIP is a contribution method into a market-linked mutual-fund scheme, not a guaranteed-return product or a bank deposit. This general comparison is not a recommendation; verify current scheme and bank terms.
Sources and further reading
Use primary and provider references to confirm current rules, rates, and product terms.
- Investor Education resources — Securities and Exchange Board of India
Accessed 7 October 2026; supports the general investor-education and risk-awareness framing.
- Circular on Product Labelling in Mutual Fund Schemes: Risk-o-meter — Securities and Exchange Board of India
SEBI’s circular establishes standardized risk-o-meter disclosure for mutual-fund schemes; it supports the statement that scheme risk must be considered, not a promise of return.
- Mutual Funds — Association of Mutual Funds in India
AMFI explains systematic investment plans as a way to invest regular amounts in mutual-fund schemes, supporting the distinction between an investment method and a bank deposit.
- Reserve Bank of India (Commercial Banks – Interest Rate on Deposits) Directions, 2025 (updated 1 October 2026) — Reserve Bank of India
The current RBI direction concerns commercial-bank deposit interest rates; verify the bank’s current schedule and product-specific term-deposit disclosures rather than assuming one rate or renewal term.