Guidance

TAG unit A1-1 cost-benefit analysis

Transport analysis guidance (TAG) on the principles of cost-benefit analysis and how they should be applied in the context of transport appraisals.

From:
Department for Transport
Published
31 May 2018
Last updated
3028 November 20232024 — See all updates

Documents

TAG unit A1-1 cost-benefit analysis

PDF, 442713 KB, 31 pages

TAG unit A1-1 cost-benefit analysis, including forthcoming changes for May 2025

PDF, 479 KB, 31 pages

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Forthcoming change: base year update

https://www.gov.uk/government/publications/tag-forthcoming-changes/forthcoming-change-base-year-update

Details

Assessment and evaluation of transport investments guidance including cost-benefit analysis:

  • principles
  • reporting

The previous version of this guidance was released in May 2023.2023.

TAG provides information on the role of transport modelling and appraisal, and how the transport appraisal process supports the development of investment decisions to support a business case.

Updates to this page

Published 31 May 2018
Last updated 3028 November 20232024 + show all updates

  1. Updated with forthcoming changes for May 2025.

  2. TAG unit A1-1 updated.

  3. TAG unit A1-1 updated.

  4. Added forthcoming change: spring 2023 data book and guidance updates.

  5. TAG unit A1-1 updated.

  6. Forthcoming changes for November 2022.

  7. Updated with new version of unit A1-1 guidance.

  8. First published.

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