ESMA strengthens ETF cost transparency rules: what changes from July 1, 2026
The new directive requires issuers to disclose the actual TER (including transaction costs), not just the headline TER.
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The ESMA directive
ESMA published on February 28, 2026 new cost transparency rules for UCITS funds and ETFs, applicable from July 1, 2026. Issuers must now publish an all-in TER including internal transaction costs, not just management fees.
Actual vs headline TER
Until now, the headline TER didn't capture all real costs. Tracking difference (gap between fund return and index return) was a better real cost indicator, but hard to compare across issuers. The new rule imposes a standardised metric for apples-to-apples comparison.
Implementation timeline
Issuers have until July 1, 2026 to comply. Reformatted KIDs (Key Information Documents) will be available from that date. Data aggregators (justETF, Morningstar) will update their databases accordingly.
Written by
Quentin FosséFounder & Editor in Chief
Passive investor since 2019, passionate about UCITS ETFs and index investing. After spending too long searching for a simple tool to detect portfolio overlaps, I built etf-overlap.com. My goal: help European investors build coherent ETF portfolios without hidden concentration risks.
