A viral claim stating that SIPs generated only 6.7% returns over 20 years uses incorrect math. Expert analysis confirms that using the correct XIRR method, SIPs typically deliver 10-13% annual returns. The confusion stems from a misunderstanding of how SIP calculations work versus actual investment performance.
A recent social media narrative has raised questions about the effectiveness of Systematic Investment Plans (SIPs) by claiming that investors earned only a 6.7% annual return over a 20-year period. This figure has caused confusion among many retail investors who often rely on long-term wealth creation projections of 12-15%. Financial analysts have clarified that these claims are based on a fundamental error in mathematical methodology rather than actual fund performance.
The Math Error Behind the 6.7% Figure
The viral claim stems from a calculation that treats every monthly contribution as if it were invested for the entire 20-year duration. This is inaccurate because a SIP involves staggered investments where only the very first installment stays invested for the full 20 years, while subsequent contributions have progressively shorter timeframes to grow. By annualizing the total corpus growth over the full two decades without accounting for the varying tenure of each installment, the calculation effectively cuts the actual annual return in half.
Why XIRR Provides the Real Picture
To accurately measure the performance of investments made at different intervals, financial professionals use the Extended Internal Rate of Return (XIRR). This metric accounts for the exact dates and amounts of every cash inflow, providing a single annual figure that reflects the true growth of the portfolio. When applying XIRR to data from diversified equity funds over the same 20-year window, the results consistently show returns in the range of 10% to 13%. This aligns with broader market trends and contradicts the suggestion that SIPs have failed to generate meaningful wealth.
Understanding the Behavior Gap
While the viral claim is mathematically flawed, it does highlight a legitimate challenge known as the behavior gap. Investors often struggle with emotional decision-making, such as increasing their investment amounts during market highs and stopping or withdrawing funds during market downturns. This behavior can significantly lower the actual returns an investor sees in their account compared to the fund's published performance. The primary advantage of a SIP is that it automates the investment process, helping investors remain disciplined through different market cycles.
The Role of Market Cycles
Market volatility is often misinterpreted as a negative for SIP returns, but it is actually a core component of the strategy's success. When markets remain flat or move downward, a SIP allows an investor to accumulate more units for the same monthly contribution. These additional units become the foundation for higher growth once the market eventually recovers. Investors should continue to monitor their portfolio's XIRR performance over the long term, rather than focusing on short-term market fluctuations or unverified claims that do not account for the timing of cash flows.