Direct answer
To estimate how much SIP you need for a goal, define three inputs honestly: the future corpus required, the months left until you need the money, and an assumed annual return that matches the risk of the portfolio you will actually hold. Then solve for the monthly contribution — Findost's free SIP calculator does the compounding maths illustratively.
Calculators assume smooth returns; markets do not. Treat every output as a planning aid, not a guarantee. PaisaGuru by Findost can walk through the framing in plain language; scheme selection for your situation is escalated to a human NISM-certified advisor. Findost is not Findoc or FinDost.
A simple SIP planning checklist
- Name the goal — retirement top-up, home down-payment, education, sabbatical.
- Price it in today's rupees, then inflate if the goal is years away (education and property costs often rise faster than general CPI).
- Fix the time horizon — money needed within a few years generally should not sit in high-equity risk.
- Choose a return assumption carefully — lower for debt-heavy sleeves; higher only if you accept equity drawdowns. Do not invent “assured” equity returns.
- Run the SIP calculator — then stress-test with a lower return and a shorter horizon.
- Sequence cash first — keep a workable emergency fund so SIPs are not broken in a crisis.
Worked intuition (illustrative only)
Suppose you need about ₹50 lakh in 15 years for a goal. Under a constant assumed return of 12% p.a., a SIP calculator will show a monthly amount in a particular range — change the rate to 8% or 10% and the required SIP rises. Those percentages are assumptions for maths, not Findost forecasts, past performance claims, or product promises.
Open the tool with your own numbers: SIP calculator → Also compare a one-time amount on the lumpsum calculator.
Step-up SIPs and discipline
Increasing the SIP with income (a step-up) can raise the terminal corpus versus a flat SIP under the same assumed return curve — again, illustrative. The harder part is behavioural: continuing SIPs through market falls is often when more units are purchased. Pausing only because headlines are scary usually hurts the plan more than a slightly imperfect amount.
When the goal arrives: from SIP to SWP
A SIP plan should also say how the money comes out. For a lumpy goal such as a house down-payment you redeem once. For retirement or a stream of fees you usually switch to a systematic withdrawal plan (SWP), which pays a fixed amount every month while the rest stays invested. Test the withdrawal side with the SIP withdrawal calculator before you commit to a monthly amount: if the corpus only lasts at a high assumed return, the withdrawal is too large. Only the gain inside each withdrawal is taxed, so an SWP from the growth option is usually lighter on tax than an IDCW payout.
Tie planning to portfolio hygiene
After you know the SIP size, review whether existing funds still fit — portfolio review, overlap, rebalancing, and direct vs regular. Tax on redemptions later: LTCG guide.
How many SIPs do Indians actually run?
AMFI's September 2026 data shows 10.06 crore contributing SIP accounts putting in a record ₹32,490 crore a month, spread across 28.62 crore folios. Before adding another SIP, read how many mutual funds Indians hold (AMFI data) and check whether your existing funds already overlap.