Jacob Schroeder at Kiplinger dug into a PensionBee white paper on "zero-fee" IRAs and found that these accounts often charge savers in ways that never show up on a statement. He asked me where the money actually goes.
The most overlooked cost is the expense ratio buried inside the funds themselves. A platform can charge zero dollars to open an account and still bleed a client 0.5% to 1% a year through the funds it defaults them into. PensionBee's estimate is that a gap of about 0.87% a year, compounded over 30 years at a 7% return, can quietly cost a saver around $171,000 in lost growth. My rule: read the prospectus, not the landing page.
The second trap is idle cash. Money that lands in an IRA and never gets invested earns little or nothing, and that is a cost the platform never has to disclose. My fix is simple. Set a calendar reminder for 48 hours after funding an IRA and actually select an investment. A target-date fund is a reasonable default if you do not want to build a portfolio from scratch.
Zero-fee is a marketing claim. The fee is still there, it has just moved somewhere you are less likely to look.