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In forceSolvency UK: internal model firmsLast checked 11 November 2026

Annual analysis of change in internal model capital (AoC.01)

A regulatory return listed by the Bank of England (PRA), insurers, United Kingdom.

Breaks down how and why the SCR calculated by the firm's internal model moved over the year, with a narrative on governance, actions taken, diversification and model limitation adjustments. The PRA uses it to understand capital movements at internal model firms. Source

Official title: Template AoC.01 - Analysis of change in Solvency Capital Requirement

The facts

Who files
Firms using an internal model (Article 19), and firms or UK holding companies reporting on a group with more than one firm using an internal model (Article 35). Source
How often
Annual. Source
Deadline
No later than 70 business days after the firm's financial year end, or 100 business days after the group's financial year end for groups, starting with the first financial year end on or after 31 December 2025 (Reporting 2.5B(8) and (9)). Source
Format
Excel. The PRA publishes AoC.01 as an Excel template, to be sent with supporting narrative documentation. It is not an entry point in the Bank of England Insurance Taxonomy. The pages checked do not state the BEEDS return type used. Source
How it is filed
Filing routes recorded for the PRA: BEEDS (Bank of England Electronic Data Submission portal); Email to the Bank's insurance data mailbox. See how firms file with the PRA.
Status
In force
Legal basis
Group
Solvency UK: internal model firms

Templates (1)

The tables and forms inside the return. Plain name first, the PRA's code in brackets.

  • Analysis of change in Solvency Capital Requirement (AoC.01)

Where the list was read: Source

Validation rules

No published validation rules were found for this return. Source

Public data

No published data from this return was found. No published data from this return was found on the Bank of England statistics pages checked (insurance aggregate data, annual and quarterly). Source

Official documents (4)

The PRA's own files, with the size and SHA-256 fingerprint of each as downloaded on 11 November 2026, so anyone can tell whether a copy is the same version.

Sources

Every page and document this return's facts were read from.

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Last checked 11 November 2026.