ETF Tracking Error: Are You Losing 1.5% Yearly?

Not all ETFs perfectly copy their index. The gap between what the index earns and what your ETF actually delivers is called tracking error — and it quietly eats your returns every year without you noticing.

Here's what happened: Tracking error measures how closely an ETF follows its benchmark index — lower is better for passive investors.. Some Indian ETFs show tracking differences of 0.5% to over 2% annually, meaning your actual returns lag the index.. Factors like fund expenses, cash drag, dividend reinvestment delays, and liquidity all cause this performance gap..

What you should do: Compare tracking error data for your ETF on AMFI or fund house websites before investing or adding more units.. Prefer ETFs with tracking error below 0.5% — especially for Nifty 50, Sensex, and gold ETFs you hold long term.. Check both tracking error AND tracking difference — tracking difference shows the actual yearly return gap from the index..

Tracking difference (ETF return minus index return over 1 year) is more useful than tracking error alone — it tells you exactly how much you underperformed the benchmark in rupee terms.