How SIP Returns Are Calculated — Formula, Examples, and What to Expect
Understand the math behind SIP (Systematic Investment Plan) returns, with the exact formula, a worked example, and realistic return expectations across fund types.
SIP (Systematic Investment Plan) is the most popular way Indians invest in mutual funds — a fixed amount every month, automatically invested regardless of market conditions. Calculating how much your SIP will grow to is straightforward once you understand the compounding math behind it.
The SIP Return Formula
SIP returns use compound interest calculated monthly:
M = P × [(1 + r)^n − 1] / r × (1 + r)
- M = Maturity amount
- P = Monthly investment amount
- r = Monthly return rate (annual rate ÷ 12 ÷ 100)
- n = Number of months
Example: ₹5,000/month for 10 Years
At 12% annual return (a common benchmark for equity mutual funds):
- Monthly investment: ₹5,000
- Total invested: ₹6,00,000 (₹5K × 120 months)
- Maturity value: ~₹11.6 lakhs
- Wealth gained: ~₹5.6 lakhs
Use our SIP Calculator to explore different scenarios instantly.
Why SIP Beats Lumpsum for Most Investors
- Rupee-cost averaging: You buy more units when markets are down and fewer when up — averaging out your cost over time
- Discipline: Regular automatic investment removes the temptation to time the market
- No large upfront capital needed: Start with ₹500/month in most funds
- Compounding works over time: The longer you stay invested, the more dramatic the compounding effect
Realistic Return Expectations
- Large-cap equity funds: 10–12% CAGR historically
- Mid/small-cap funds: 12–15% CAGR (higher risk)
- Debt funds: 6–8% (lower risk, near FD rates)
- ELSS (tax-saving funds): 12%+ historically, with 80C deduction
Past returns are not guaranteed. Always check the fund's actual historical performance before investing.