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BidSonar is an independent index of public-sector opportunities. We aggregate data from official sources and are not affiliated with any procurement body. Data is licensed under the Open Government Licence v3.0 and the EU TED reuse notice.

    ContractsCorporation Tax System Modernisation and Support Services
    Awarded contract

    Corporation Tax System Modernisation and Support Services

    Awarded
    £29.8m
    Published 8 Jul 2026

    Modernise and provide ongoing technical support services for the Corporation Tax (COTAX) administration system.

    🇬🇧United KingdomPublished 8 Jul 2026· 1 months agoviaContracts Finder
    Awarded
    £29.8m
    Published 8 Jul 2026

    Decision brief

    4 fields
    • Contract value
      £29,800,000
      Pounds sterling
    • Tender closed
      3 May 2026
      3 months ago
    • Sector
      IT & Software
      Browse related listings
    • Location
      🇬🇧United Kingdom

    Suppliers

    1 supplier
    • CU
      CAPGEMINI UK PLC
    Lead contractor

    Lifecycle

    Awarded

    Contract awarded. Originally published 1 months ago.

    8 Jul 2026Today3 May 2026

    Brief

    This opportunity seeks support for the modernisation and ongoing technical services of the Corporation Tax (COTAX) system. The project aims to upgrade and maintain the technical infrastructure that manages corporation tax administration, including system modernisation, technical support, and service delivery to ensure efficient tax processing and compliance. Potential suppliers should have expertise in tax administration systems, technical service delivery, and government IT modernisation initiatives.

    Track record

    26 awards · 17 winners
    Open field

    No single supplier dominates the field.

    In it software, H M REVENUE CUSTOMS has awarded 26 contracts to 17 suppliers.

    Who wins here
    1. IBM UNITED KINGDOM LIMITED4× · 15%
    2. CAPGEMINI UK PLC4× · 15%
    3. SYNYEGA LIMITED2× · 8%
    4. Equal Experts2× · 8%
    5. Tecknuovo Ltd2× · 8%
    6. NTT DATA UK Ltd1× · 4%

    +11 more suppliers

    Across it software, the most active winners are SOFTCAT PLC, PHOENIX SOFTWARE LTD, SOFTCAT LTD - FCA — the field to beat, or your route in as a partner.

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    Take action
    View on sourceContracts Finder

    Award notice and full record on the publisher's site

    Publisher
    UK Cabinet Office
    Licence
    OGL v3.0
    Source
    contractsfinder.service.gov.uk
    Record ID
    84d1a4fb-3601-4017-a3b4-557376a0ca3c-905272
    HM
    Buyer
    H M REVENUE CUSTOMS
    Sector
    IT & Software