Posted on: August 20, 2026
Preparing for SDDT and Basel 3.1 Regulatory Reporting: What Firms Need for January 2027
Basel 3.1 and the Small Domestic Deposit Takers (SDDT) simplified capital regime take effect from 1 January 2027, introduced through the Bank of England’s Banking Taxonomy 4.0.0 and carried forward unchanged into Taxonomy 4.1.0, published in June 2026. Firms need to make sure their reporting systems, data and implementation plans are ready well ahead of the deadline.
SDDT and Basel 3.1 Regulatory Reporting with WIRES
You have probably already chosen your RegTech partner for your SDDT or Basel 3.1 reporting. However, if anything changes, Whistlebrook would be pleased to help you meet the 1st Jan 2027 deadline.
The spreadsheet data load version of Whistlebrook’s WIRES Regulatory Reporting product can be implemented rapidly in a matter of days.
Plus, in consultation with our customers, Whistlebrook has ensured that WIRES already fully supports both frameworks. This includes:
| Basel 3.1 | SDDT |
| All regulatory reporting templates (with system to system direct transmission*) in accordance with Bank of England Taxonomy 4.0.0:
• Credit Risk inc. Output Floor • FINREP Forecast Capital • Plus Large Exposures • Leverage • Liquidity – Net Stable Funding, Additional Liquidity Monitoring Metrics and Liquidity Coverage • Market Risk • Operational Risk • Own Funds |
All regulatory reporting templates (with system to system direct transmission where possible) in accordance with Bank of England Taxonomy 4.0.0. Includes:
• Credit Risk • FINREP Forecast Capital • Plus Large Exposures • Leverage (LV 47) • Liquidity – Net Stable Funding, Additional Liquidity Monitoring Metrics (C68), and Liquidity Coverage • Market Risk (SC 22.00) • Operational Risk • Own Funds |
| Other Reporting:
• ICAAP related including PRA119 and Off Cycle Review • Bank of England Statistical Returns • MREL • Other FCA submissions |
Other Reporting:
• ICAAP related including PRA119 and Off Cycle Review • Bank of England Statistical Returns • Other FCA submissions |
| — | Ability to move to Basel 3.1 should that become a business need over time. |
Pillar 3 Disclosures
In addition to the above, we will be adding the Pillar 3 Disclosure forms. These (where possible) automatically link to the regulatory templates (e.g. COREP, FINREP, etc.) and therefore are pre-populated as part of the Custom Reports area.
There are 4 disclosure forms for SDDT firms with listed debt or equity. Basel 3.1 institutions will have access to 96 disclosure reports.
The Pillar 3 Disclosures will be available in the next release of WIRES (7.4.0 in October).
Other Standard WIRES Features
In-house regulation monitoring to ensure that WIRES is continually in line with the regulator’s rules.
All regulatory reporting templates include regulator specified validation rules. In addition, users can specify their own validations.
The WIRES product supports, in house, hosted or Cloud implementations.
If you would like to talk with us about your requirements then please contact Jon Sayer (Business Development Director) on:
Further reading
For more on Basel 3.1 and regulatory reporting, see our Considerations on Basel 3.1 White Paper and our other Basel 3.1 resources.
Whistlebrook provides integrated software supporting treasury, asset and liability management, risk management, finance, planning, performance and regulatory reporting — all powered by a single, trusted source of data.