Section 508 for federal agencies, the ADA Title II rule for state and local governments and the HHS Section 504 rule for recipients of HHS funding, each with the WCAG version it names.
On request, an Accessibility Conformance Report in the VPAT® 2.5Rev format for each user-facing deliverable.
How we write it: the same method as this site's report.
U.S. federal (agency ICT)Key date: January 18, 2018
Section 508: Revised 508 Standards (36 CFR 1194), E205.4
In force: final rule effective March 21, 2017, with compliance required from January 18, 2018; incorporates WCAG 2.0 (W3C Recommendation, December 11, 2008).
“Electronic content shall conform to Level A and Level AA Success Criteria and Conformance Requirements in WCAG 2.0”
What we do: Every user-facing screen we build for a federal agency is designed and tested to WCAG 2.0 Level AA, the version the Revised 508 Standards incorporate, or to a later version your contract names, with the test results handed over with the deliverable.
Source: Section 508 (access-board.gov) (opens in a new tab) · Checked November 10, 2026
International standard (W3C / ISO)Key date: September 24, 2025
WCAG 2.2 approved as ISO/IEC 40500:2025
ISO/IEC 40500:2025 (WCAG 2.2) published September 24, 2025; W3C announced the approval October 21, 2025. WCAG 2.2 is the most recent WCAG version; Section 508 incorporates WCAG 2.0, and the ADA Title II and HHS Section 504 rules incorporate WCAG 2.1.
“is now an approved International Organization for Standardization (ISO) standard: ISO/IEC 40500:2025.”
What we do: We name the WCAG version each deliverable is tested to: WCAG 2.0 Level AA for Section 508 work and WCAG 2.1 Level AA for ADA Title II and HHS Section 504 work, unless your contract names another.
Source: WCAG 2.2 approved as ISO/IEC 40500:2025 (w3.org) (opens in a new tab) · Checked November 10, 2026
U.S. (state and local governments)Key date: April 20, 2026
ADA Title II web and mobile accessibility rule: compliance dates extended (DOJ interim final rule)
IFR (91 FR 20902) effective April 20, 2026: 50,000 or more → April 26, 2027; under 50,000 and special districts → April 26, 2028; WCAG 2.1 AA stands as adopted in 2024. DOJ plans future rulemaking on the substance, and NFB v. DOJ, No. 1:26-cv-02007 (D. Md., filed May 21, 2026), which asks the court to vacate the extension, is pending.
“The compliance date for public entities with a total population of less than 50,000, or any special district government, is extended from April 26, 2027, to April 26, 2028.”
What we do: Public-facing apps, agents and dashboards we build for state and local governments are built and tested to WCAG 2.1 Level AA, and remediation against your compliance date becomes a costed line in the business case.
Source: ADA Title II web and mobile accessibility rule (govinfo.gov) (opens in a new tab) · Checked November 12, 2026
U.S. (recipients of HHS financial assistance)Key date: May 7, 2026
HHS Section 504 web and mobile accessibility rule: compliance dates extended (HHS interim final rule)
IFR (91 FR 25496, published May 11, 2026) effective May 7, 2026: 15 or more employees → May 11, 2027; fewer than 15 → May 10, 2028; WCAG 2.1 AA stands as adopted in 2024. HHS plans future rulemaking on the substance, and NFB v. DOJ, No. 1:26-cv-02007 (D. Md., filed May 21, 2026), which asks the court to vacate the extension, is pending.
“The compliance date for recipients with fifteen (15) or more employees is extended from May 11, 2026, to May 11, 2027.”
What we do: Patient- and client-facing screens we build for public health agencies are built and tested to WCAG 2.1 Level AA, with the test results handed over with the deliverable.
Source: HHS Section 504 web and mobile accessibility rule (federalregister.gov) (opens in a new tab) · Checked November 12, 2026