What is Rupee Cost Averaging?

Rupee Cost Averaging (RCA) helps investors lower their average cost per unit by investing consistently across market cycles. Learn how it works and why it’s core to SIP success.

17/06/2025

Introduction

 One of the greatest secrets behind SIP success is Rupee Cost Averaging (RCA) — a strategy where you invest a fixed amount at regular intervals, no matter where the market is. 

 This results in buying more when prices are low, and less when prices are high — automatically averaging your cost over time.

How Does Rupee Cost Averaging Work?

Let’s say you invest ₹5,000 every month in a mutual fund. Here's what might happen:

Month NAV (₹) Units Bought
Jan 50 100
Feb 40 125
Mar 60 83.3
Your average cost = ₹5,000 × 3 / (100 + 125 + 83.3) = ₹46.29 per unit, even though the price ranged between ₹40–₹60.

 ðŸ“‰ Outcome: Lower average purchase price, reducing market timing risk.

  Real-Life Example: Deepak’s Goal Planning Deepak started a SIP in 2020 for his daughter’s education goal in 2035.

  • Over 5 years, markets fluctuated wildly — COVID crash, recovery, inflation.
  • But his consistent ₹6,000/month investment averaged his entry cost to ₹52/unit, despite the NAV ranging from ₹40 to ₹75.
Thanks to RCA, Deepak's CAGR stood at 12.2%, and he never had to time the market. Why RCA Works So Well

✅ Helps avoid emotional investing

✅ Works in volatile and uncertain markets
✅ Creates a disciplined long-term approach

Conclusion 

 You don’t need to time the market if you master Rupee Cost Averaging. It’s how smart investors build wealth — automatically.

Stick to your SIPs. Let RCA silently reduce your cost and increase your returns over time. Summary Table: Rupee Cost Averaging Explained

Scenario Market Trend Average NAV Paid Outcome
Volatile Market Up and Down Lower than average price More units, better returns
Constant SIP Investment Any condition Auto-adjusted Reduces timing risk
Lump Sum vs RCA Uncertain times Lump sum at one NAV SIP with RCA fares better in volatile markets

Dr. Satish Vadapalli
Research Analyst