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What is Rupee Cost Averaging in SIP?

An explanation of Rupee Cost Averaging and how it works to lower your average investment cost in volatile markets.

By Prasun Mukherjee Jul 11, 2026 Investing Basics
What is Rupee Cost Averaging in SIP?
Read Time6 minutes
Focusrupee cost averaging
Use This ForPlanning decisions, client education, and mutual fund research context.

What is Rupee Cost Averaging in SIP?

Rupee Cost Averaging is a powerful investment concept that automatically operates when you invest through a Systematic Investment Plan (SIP). It eliminates the need to time the stock market, making it an excellent strategy for retail investors.

How Rupee Cost Averaging Works

When you invest a fixed amount regularly, the number of mutual fund units you purchase depends on the current Net Asset Value (NAV). If the market drops, the NAV falls, and your fixed SIP installment buys more units. If the market rises, the NAV increases, and you buy fewer units. Over time, this averages out the cost of acquisition per unit.

An Illustrative Example

Imagine you invest Rs. 5,000 monthly. In Month 1, the NAV is Rs. 50 (you get 100 units). In Month 2, the market drops and NAV is Rs. 40 (you get 125 units). In Month 3, the market recovers and NAV is Rs. 50 (you get 100 units). Your average cost per unit is lower than the peak NAV, ensuring better returns when the market moves upwards.

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