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Council Tax base calculation

Forms and guidance notes for the calculation of Council Tax base (CTB).

Updates to this page

From:
Ministry of Housing, Communities and Local Government, Department for Levelling Up, Housing and Communities and Ministry of Housing, Communities & Local Government (2018 to 2021)
Published:
26 September 2013
Last updated:
5 October 2026
Show all updates

  1. Updated form, guidance notes, and letter to authorities with extended deadline for submission.

  2. Added form and guidance notes, October 2026.

  3. Added forms and guidance notes, October 2025.

  4. Added forms and guidance notes, October 2024.

  5. The attached form has been updated to fix issues with rounding in the family annex section.

  6. Added forms and guidance notes, October 2023.

  7. Added forms and guidance notes, October 2022.

  8. Added forms and guidance notes, October 2021.

  9. Added forms and guidance notes, October 2020.

  10. Updated form, guidance notes, validation notes and supplementary form notes.

  11. Updated the form, guidance notes, notice and validation notes.

  12. Updated the form, guidance notes, notice and validation notes.

  13. Updated the form, guidance notes, notice and validation notes.

  14. Updated the form, guidance notes, notice and validation notes

  15. First published.

Applies to England

Documents

Council Tax Base (CTB): Form and supplementary form (October 2026)

MS Excel Spreadsheet, 354 KB

This file may not be suitable for users of assistive technology.

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Council Tax Base (CTB): Notes for completion

HTML

Council Tax Base (CTB): Validation checks

HTML

Council Tax Base (CTB): Letter to authorities

PDF, 245 KB, 3 pages

This file may not be suitable for users of assistive technology.

Request an accessible format
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email alternativeformats@communities.gov.uk. Please tell us what format you need. It will help us if you say what assistive technology you use.

Details

Council Tax base (CTB) forms to be completed by local authorities, along with accompanying guidance notes.

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