The SEC has officially rolled out the 2026 XBRL taxonomies with the latest upgrade to the EDGAR system (Release 26.1) on March 16, 2026.
At a glance, this may look like a routine annual update. In reality, it reflects a steady shift toward more structured, consistent, and usable data across financial and regulatory reporting.
If you’re preparing for upcoming filings, here’s what you need to know.
A Quick Overview
The 2026 taxonomies are based on draft versions released in September 2025, followed by a feedback period that closed in November.
These final updates introduce targeted changes across multiple taxonomies. The focus is not on large-scale redesign, but on improving clarity, fixing inconsistencies, and reducing manual effort in tagging.
One important point to note: 2026 taxonomies are only compatible with other 2026 versions.
Key Updates Across Taxonomies
Instead of sweeping changes, this year’s update focuses on refinement across specific areas.
Document and Entity Information (DEI)
A small but notable update. The DEI taxonomy now supports a new exchange code value NYSETX, representing NYSE Texas.
This ensures filings can accurately reflect newer exchange identifiers without custom extensions.
Filing Fee Disclosure (FFD)
The FFD taxonomy introduces a structural change by moving four concepts into a more relevant section within the taxonomy.
While this does not change the data itself, it improves how filing fee information is organized and presented.
Open-End Fund (OEF)
The OEF taxonomy includes a technical adjustment to how extensible enumeration lists are referenced.
If you are using custom definitions, this is something you will need to review to ensure alignment with the updated structure.
Resource Extraction Payments (RXP)
An unused data type has been removed from the taxonomy.
This does not impact validation or reporting, but it helps clean up unnecessary elements and simplifies the taxonomy.
Self-Regulatory Organizations (SRO)
The SRO taxonomy now includes predefined labels for certain DEI elements.
This removes the need for custom labels in specific filing scenarios, making implementation slightly more straightforward.
Special Purpose Acquisition Companies (SPAC)
A new link role has been added to improve how compensation-related disclosures are structured within the taxonomy.
This enhances clarity in reporting rather than introducing new disclosure requirements.
Changes at a Glance
| Taxonomy | Area | What Changed |
| DEI | Document & Entity Information | Added NYSETX as a new exchange code value. |
| FFD | Filing Fee Disclosure | Moved 4 concepts to Fees Summary (Role 995215). |
| OEF | Open-End Fund | Updated target role for extensible enumeration lists. |
| RXP | Resource Extraction Payments | Removed unused data type (no impact). |
| SRO | Self-Regulatory Organizations | Added labels to DEI elements, no custom labels needed. |
| SPAC | Special Purpose Acquisition Company | Added new link role (1603a) for Compensation Axis. |
Alignment with FASB Taxonomies
The 2026 U.S. GAAP Financial Reporting Taxonomy and the SEC Reporting Taxonomy are aligned with the versions published by the Financial Accounting Standards Board (FASB) in December 2025.
This alignment helps maintain consistency between accounting standards and regulatory reporting requirements.
Other Finalized Taxonomies
In addition to the updates above, several taxonomies have been finalized without major structural changes, including:
- Cybersecurity Disclosure (CYD)
- Executive Compensation Disclosure (ECD)
- Security-Based Swaps (SBS)
- NAICS and SIC classifications
- Country, currency, and jurisdiction-related taxonomies
- Funds and insurance product taxonomies
For most filers, these will not require immediate changes but should still be reviewed as part of the transition.
What Filers Should Do Now
The SEC is allowing flexibility, but the direction is clear.
- EDGAR currently accepts both 2025 and 2026 taxonomies.
- Companies are encouraged to adopt the 2026 versions early.
- Use 2026 taxonomies for reporting periods ending on or after March 16, 2026.
- Do not apply them to earlier periods.
- Be aware that older taxonomies are not compatible with 2026 versions (except IFRS).
Also, support for 2024 taxonomies is not expected to continue beyond June 2026, which limits how long companies can delay the transition.
Why This Update Matters
This year’s update may seem incremental, but it continues a clear trend.
Regulators are pushing toward:
- Better structured disclosures.
- Less reliance on custom tagging.
- More consistency across filings.
- Data that can be easily used in automated systems.
For companies, this means one thing.
Taxonomy updates are no longer just compliance tasks. They directly impact data quality and reporting efficiency.
Making the Transition Easier
Taxonomy updates are becoming more frequent and more detailed. Handling them manually each year is not sustainable.
A more structured setup helps.
With platforms like IRIS CARBON®, teams can:
- Stay aligned with the latest taxonomies automatically.
- Reduce dependency on manual tagging updates.
- Maintain consistency across filings.
- Avoid last-minute corrections during submission.
The goal is simple. Spend less time fixing structure and more time focusing on the actual disclosures.
Final Takeaway
The 2026 XBRL taxonomy update is less about major changes and more about tightening the system.
If you treat it as a routine update, you may miss opportunities to simplify your tagging, reduce errors, and improve reporting quality. Planning your transition early will help you stay ahead, especially as reporting continues to move toward more automated and data-driven workflows.
