SEC Lifts Data-Tagging Rules That No Firm Had Yet Had to Follow

On 11 September 2026 the Securities and Exchange Commission exempted registrants from filing five things in Inline XBRL, the structured data language whose tags make a document machine-readable. Announcing it three days later, the Commission said it "will reduce compliance costs."

Not one of the five requirements had taken effect. Under a compliance-date extension adopted on 10 September 2025 without notice and comment, the earliest applied to submissions due on or after 1 January 2027, the latest to filings due on or after 30 June 2029. The nearest was three and a half months off when the order was signed. Neither the order, Release No. 34-106339, nor the press release announcing it mentions that extension, or that no firm had yet had to comply with any of it.

The five are Form CA-1, the clearing agency registration application, except Exhibit H; Form 1, the exchange registration application, except Exhibit I; Form X-17A-5 Part III, the annual report; Form 17-H, the risk assessment report from certain larger broker-dealers; and a security-based swap entity's annual compliance report.

What the order does not touch

Filers gain nothing else: the same forms go to EDGAR without the tags, and no format replaces them. Footnote 8 is explicit.

"This order does not provide any exemption from the requirement to file or submit these forms and reports electronically on EDGAR."

The audited numbers stay tagged. Exhibit H to Form CA-1, a balance sheet and income and expenses statement certified by an independent accountant, and Exhibit I to Form 1, the audited financial statements, are carved out.

The order addresses Inline XBRL only, and is silent on the custom XML structuring requirements adopted in the same December 2024 release for Form CA-1 schedules, Form 1 disclosures and Rule 19b-4(e) information. It carries no sunset, no conditions and no review date. As an exemptive order rather than a rulemaking, it leaves the rule text on the books, and it is signed "By the Commission. Sherry R. Haywood, Assistant Secretary," with no attached statement and no recorded vote.

The estimate and the counter-estimate

The reasoning rests on cost. Inline XBRL, the order says, "primarily helps financial institutions and regulators analyze data" and is less useful for these five, which the Commission uses mainly to check whether a market intermediary meets Exchange Act standards. Much of what they carry is individually tailored, and for Form X-17A-5 Part III the tagging would "duplicate existing processes." Form 17-H, the compliance report and the vast majority of Form X-17A-5 Part III are not public.

Since the rules were adopted, the order says, the Commission "has received information from industry participants stating that the cost of complying with the Inline XBRL requirement is higher than the Commission previously estimated." One document is cited: a letter of 13 March 2026 from SIFMA, a trade association, to the director of the Commission's Division of Trading and Markets.

The two sets of figures sit far apart. The December 2024 adopting release put the median per-filing cost of structuring financial statements at $310 to $940 for smaller Form X-17A-5 Part III filers, $940 to $2,820 for larger broker-dealers affiliated with public reporting companies and $3,750 to $11,250 for larger unaffiliated ones. Form 17-H came to $100 to $300 per filing for affiliated filers, $350 to $1,050 for unaffiliated. Form 1 was a median $1,410 to $4,230 per filing for affiliated exchanges, against an industry-wide external total of $125,000 a year. Form CA-1 structuring, Inline XBRL and custom XML together, was $6,430 to $19,270 per filing.

SIFMA's figures are per entity, not per filing. Kyle Brandon, its head of derivative policy, wrote:

"However, from the limited preliminary feedback received the estimated direct cost of initial XBRL per report per filing entity is in the range of $7,500 - $50,000, depending on, for example, the firm's experience with XBRL and the complexity of the organization and therefore the amount of work needed to set up the report."

It put the annual cost per filing entity at $7,500 to $32,000 for each audited annual report and $7,500 to $15,000 for risk reports, or $15,000 to $47,000 for a firm subject to both. On the low end of its own ranges it reached industry totals of $26,000,000 to set the reports up and $26,000,000 a year to produce them, across approximately 3,200 registered broker-dealers.

The taxonomies were never published

A taxonomy is the tag set a filer applies, and its absence was a stated reason for the 2025 delay.

"These twelve-month extensions will give firms more time to develop compliant systems and will give Commission staff more time to build and finalize taxonomies with respect to structured data requirements, as well as work with FINRA to update the eFOCUS systems with respect to FOCUS Report amendments."

The extension followed a SIFMA letter of 13 May 2025 arguing that no taxonomies existed and that filers and their vendors could not build until the Commission finalised them. Ten months later the association wrote that staff had still "not yet produced a draft taxonomy." The 2026 order does not mention taxonomies at all, and nothing on the record shows they were completed. The Commission has retired a requirement whose plumbing it never built.

The dissenters are still on the Commission

The requirements were adopted on 16 December 2024 over a dissent from Commissioners Hester Peirce and Mark Uyeda. "While we generally support the transition from paper filings to electronic filings, we object to the manner in which the Commission is imposing structured data requirements. Accordingly, we are unable to support today's amendments," they wrote. They argued the format might not last.

"Like any technology, specific structured data languages can become obsolete—similar to how the 'write once, read many' technological storage format (i.e., CD-ROM) for broker-dealer books and records remained a rule requirement far beyond its useful life."

Both now sit on the Commission that has exempted the requirement they opposed. SIFMA's letter describes the 2024 rule as approved "three votes to two"; the dissents are documented in the commissioners' own statement, but that tally appears in no primary document.

Chairman Paul Atkins framed it in the announcement, his second sentence reaching past this requirement.

"This exemptive order – which provides commonsense relief without sacrificing investor protection – will reduce compliance costs and enable market participants to more efficiently allocate resources, including to support or enhance their operations and existing compliance obligations. This action furthers the Commission's efforts to transform our rulebook by trimming immaterial requirements that burden the market without materially benefitting investors."

Much is left open. The order counts no entities relieved. It does not say by how much costs exceed its earlier estimate, does not restate that estimate and adopts no revised one. It promises no amendment or rescission of the rule text the exemption sits on. Nothing quantifies what firms had already spent on requirements that never arrived.