SIP (Systematic Investment Plan) and lump sum are the two primary ways to invest in Indian mutual funds. Both have legitimate use cases, and the "right" answer depends on your financial situation, market conditions, and investing temperament.
How SIP works
A SIP invests a fixed amount every month regardless of market conditions. When markets fall, your fixed amount buys more units. When markets rise, you buy fewer units. Over time, this averages your purchase cost — known as rupee cost averaging.
Example: ₹10,000/month in a Nifty 50 index fund for 20 years at 12% CAGR = approximately ₹99.9 lakh corpus. Total invested = ₹24 lakh. Wealth created = ₹75.9 lakh.
How lump sum works
A lump sum investment puts all your money to work immediately. This is mathematically superior when markets are rising (you benefit from the full corpus growing). But if markets fall after you invest, recovery can take years.
Example: ₹24 lakh invested as a lump sum at 12% CAGR for 20 years = approximately ₹2.32 crore — significantly more than the SIP example above, but only if the 12% CAGR holds from day 1.
The honest answer for most Indian investors
If you receive a regular salary: SIP. It aligns with when you receive money, removes timing decisions, and builds financial discipline. If you receive a windfall (bonus, inheritance, property sale): split it — invest 40% as lump sum immediately, deploy the rest in a 6-month STP (Systematic Transfer Plan) from a liquid fund.
Use our SIP Calculator to estimate your corpus, then compare different scenarios.