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XBRL Validations Module

H M Revenue & Customs

This public procurement record has 3 releases in its history.

Award

15 Oct 2026 at 14:47

UK7 - Contract Details Notice
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 for Corporation Tax computations. The service validates tax computation formats and gives customers, agents and software providers feedback before submission. Its purpose is to improve the quality of submitted data, support compliance risk profiling and validate newly mandated formats. The work is information technology services, covering software development and related technical support (CPV 72000000). Delivery is specified for the United Kingdom. The requirement concerns modifications to an existing validation engine rather than a general tax software purchase: HMRC sought capability to validate the relevant computations and formats ahead of submission.

The procurement is complete and the contract has been awarded to CoreFiling Limited. HMRC used a direct award, stating that CoreFiling was the only supplier with the proven capability and technical expertise needed to make the required modifications. The award was dated 14 August 2026 and valued at £705,000 excluding VAT (£846,000 including VAT). The contract was signed on 1 October 2026 and runs from 1 October 2026 to 31 January 2027. There was one lot, and the process identified it as suitable for SMEs. The stated evaluation basis was the supplier’s unique proven technical capability; no separate scored award criteria are provided. The contract is active.

For suppliers considering similar HMRC work, this award indicates demand for specialist software engineering on XBRL validation within Corporation Tax computations. A credible competitor would need demonstrable experience modifying validation engines and strong technical expertise in XBRL and tax computation formats, including formats newly required for submission. The solution must provide clear validation feedback usable by taxpayers, agents and software providers before filing, while supporting HMRC’s data-quality and compliance-risk objectives. The stated rationale makes proven capability central: a general software development offer alone would be unlikely to match the case HMRC gave for selecting its supplier. The single lot was marked suitable for SMEs, suggesting the requirement was not restricted to large suppliers, although delivery still depends on having the relevant specialist skills and capacity.

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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/097549-2026
Current Stage
Award
All Stages
Award

Procurement Classification

Notice Type
UK7 - Contract Details 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
£705,000 £500K-£1M

Notice Dates

Publication Date
15 Oct 20261 weeks ago
Submission Deadline
Not specified
Future Notice Date
Not specified
Award Date
14 Aug 20262 months ago
Contract Period
1 Oct 2026 - 31 Jan 2027 1-6 months
Recurrence
Not specified

Notice Status

Tender Status
Complete
Lots Status
Complete
Awards Status
Active
Contracts Status
Active

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
H M 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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