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ToolMagik
2026-07-08

What is SIP? How Systematic Investment Plans Work

Learn what SIP is, how it works, the power of rupee cost averaging, how returns are calculated, and tips to maximize your SIP investments.

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What is SIP?

SIP stands for Systematic Investment Plan. It's a method of investing a fixed amount into mutual funds at regular intervals — typically monthly. Instead of investing a large lump sum, you spread your investment over time.

How SIP Works

  1. Choose a mutual fund and monthly amount (e.g., ₹5,000/month)
  2. Every month, that amount is automatically debited and invested
  3. You buy units at whatever the current price (NAV) is
  4. Over time, you accumulate units at various price points
  5. Your money grows through compounding returns

The SIP Formula

Future Value = P x [(1 + r)^n - 1] / r x (1 + r)

Where: P = Monthly amount, r = Monthly return rate, n = Total months

Example: ₹5,000/month for 10 years at 12%

  • Total invested: ₹6,00,000
  • Expected value: ₹11,61,695
  • Returns earned: ₹5,61,695
  • Your money almost doubled!

Rupee Cost Averaging

The biggest SIP advantage: when markets are high, you buy fewer units. When markets fall, you buy more units. Over time, your average cost is lower than the average market price. You never need to "time the market."

SIP vs Lump Sum

  • SIP: Lower risk, builds discipline, good for salaried people
  • Lump sum: Potentially higher returns but risky timing

Tips to Maximize Returns

  • Start early — ₹1,000/month at age 22 beats ₹5,000/month at age 32
  • Increase SIP by 10% every year (step-up SIP)
  • Never stop during market crashes — you buy cheap units then
  • Choose equity funds for 7+ year goals

SIP Wealth Table

  • ₹1,000/month for 20 years at 12% = ₹9.9 lakhs
  • ₹5,000/month for 20 years at 12% = ₹49.9 lakhs
  • ₹10,000/month for 20 years at 12% = ₹99.9 lakhs (~1 crore!)
  • ₹25,000/month for 20 years at 12% = ₹2.5 crores

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