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Horizon Shortfall Scheme Appeals (HSSA) process

Information on the independent Horizon Shortfall Scheme Appeals (HSSA) process for postmasters affected by shortfalls related to previous versions of Horizon.

The independent Horizon Shortfall Scheme Appeals process is open to applications from all eligible postmasters. For information about the deadlines for submitting your full application, see the eligibility section of the guidance and principles.

The Post Office established the Horizon Shortfall Scheme (HSS) in 2020 to address past issues regarding its point-of-sale accounting software system, Horizon.  

The Horizon Shortfall Scheme Appeals (HSSA) process, delivered by the Department for Business and Trade (DBT), seeks to ensure that HSS claimants have the full opportunity to receive fair redress and reflects a recommendation from the Horizon Compensation Advisory Board.  

The central goal of the process is to deliver compensation to eligible postmasters that is full and fair. It aims to restore them to the position they would have been in had it not been for the Horizon-related actions of the Post Office, applying established legal principles and the principle of fairness.

Applicant information

Guidance on how to apply to the Horizon Shortfall Scheme Appeals (HSSA) process.

Guidance and principles

Guidance and principles on how HSSA cases are assessed.

Your data

Updates to this page

Published 8 April 2025
Last updated 28 May 2025 show all updates
  1. Information added to page to highlight that the Horizon Shortfall Scheme Appeals process is open to applications from all eligible postmasters.

  2. 'Horizon Shortfall Scheme Appeals (HSSA): registration form', 'Horizon Shortfall Scheme Appeals: proving your identity', 'Horizon Shortfall Scheme Appeals (HSSA): tariff of reasonable legal costs', 'Horizon Shortfall Scheme Appeals (HSSA): privacy notice' added to collection.

  3. First published.