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XBRL Validations Module

HM Revenue & Customs

This public procurement record has 2 releases in its history.

Award

14 Aug 2026 at 15:26

UK6 - Contract Award Notice
Award

12 Aug 2026 at 15:16

UK5 - Transparency Notice
Summary of the contracting process

HM Revenue & Customs procured an XBRL validation module as an IT service for Corporation Tax computations. The service is intended to improve the quality of submitted data, support compliance risk profiling and validate newly mandated tax computation formats. The validation engine provides feedback to customers, tax agents and software providers before submissions are made. The work covers the technical capability and modifications needed to support this validation function, with delivery in the United Kingdom. The procurement is a central government requirement from HMRC, relevant to suppliers providing tax technology, XBRL software, validation engines, software development, technical consultancy or related IT support. The requirement was structured as one lot and was considered suitable for small and medium-sized enterprises.

The procurement has reached the award stage, with CoreFiling Limited selected under a direct award procedure. HMRC stated that CoreFiling was the only supplier with the proven capability and technical expertise required to make the necessary modifications. The award date was 14 August 2026. The awarded value is £705,000 excluding VAT, or £846,000 including VAT. The award period runs from 1 September 2026 to 31 December 2026. A contract signature was scheduled for 1 September 2026, and the standstill period ended on 25 August 2026. The procurement was above the relevant threshold and was evaluated through the direct-award justification based on exclusive technical capability and expertise. The award covers the single XBRL validation module lot; no separate lot awards were made.

This outcome demonstrates demand for specialist tax-compliance technology that can validate XBRL-based Corporation Tax computations before submission. A credible competitor for a future requirement from HMRC would need demonstrable expertise in XBRL validation, tax computation formats and the integration of validation tools into public-facing submission processes. It would also need to show that its software can provide clear, timely feedback to customers, agents and software providers, while improving data quality and supporting compliance risk analysis. Relevant strengths include proven software development and modification capability, technical consultancy, secure operation of services handling tax-related information, and experience delivering dependable validation or rules-engine technology for government or regulated users. The requirement was treated as suitable for an SME, indicating that specialist smaller technology firms may be able to compete where they can evidence comparable capability and delivery experience.

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Notice Information

Notice Title

XBRL Validations Module

Notice Description

XBRL validation capability used for Corporation Tax computations. The objective is to improve data quality, support compliance risk profiling, and enable validation of newly mandated tax computation formats. The validation engine provides feedback to customers, agents and software providers before submission.

Procurement Information

HMRC identified CoreFiling as the only supplier with the proven capability and technical expertise necessary to deliver the required modifications

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-06e2da
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/077785-2026
Current Stage
Award
All Stages
Award

Procurement Classification

Notice Type
UK6 - Contract Award Notice
Procurement Type
Standard
Procurement Category
Services
Procurement Method
Direct
Procurement Method Details
Direct award
Tender Suitability
SME
Awardee Scale
SME

Common Procurement Vocabulary (CPV)

CPV Divisions

72 - IT services: consulting, software development, Internet and support

CPV Codes

72000000 - IT services: consulting, software development, Internet and support

Notice Value(s)

Tender Value
Not specified
Lots Value
Not specified
Awards Value
£705,000 £500K-£1M
Contracts Value
Not specified

Notice Dates

Publication Date
14 Aug 20261 weeks ago
Submission Deadline
Not specified
Future Notice Date
Not specified
Award Date
12 Aug 20262 weeks ago
Contract Period
1 Sep 2026 - 31 Dec 2026 1-6 months
Recurrence
Not specified

Notice Status

Tender Status
Complete
Lots Status
Complete
Awards Status
Pending
Contracts Status
Not Specified

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
HM Revenue & Customs
Contact Name
Available with D3 Tenders Premium →
Contact Email
Available with D3 Tenders Premium →
Contact Phone
Available with D3 Tenders Premium →

Buyer Location

Locality
LONDON
Postcode
SW1A 2BQ
Postcode Area
South West London
Country
England
Major Region (ITL 1)
TLI London
Basic Region (ITL 2)
TLI3 Inner London - West
Small Region (ITL 3)
TLI35 Westminster and City of London
Delivery Location
Not specified
Local Authority
Westminster
Electoral Ward
St James's
Westminster Constituency
Cities of London and Westminster

Supplier Information

Number of Suppliers
1
Supplier Name

COREFILING LIMITED

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

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The Open Contracting Data Standard (OCDS) is a framework designed to increase transparency and access to public procurement data in the public sector. It is widely used by governments and organisations worldwide to report on procurement processes and contracts.

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