Claimer

Claimer is a London-based software company whose platform automates the preparation and submission of UK research and development tax relief claims. The product covers claim notification deadlines and submission, AI-driven eligibility assessment, information gathering and drafting of technical narratives, collection and allocation of R&D financial and company data, one-click auto-population, validation and submission of HMRC Additional Information Forms (AIFs), and tracking of claim status through receipt, processing and payment by HMRC.

The eligibility and narrative tools draw on HMRC internal and external guidance together with an in-house training dataset described as 800+ claims and 70+ enquiries, and scan public-domain documents to identify and validate the baseline technologies in place at the time of a project. Outputs are structured to be AIF-compatible and the company describes anti-hallucination measures and risk analysis that highlights weak areas of a claim. Operationally, Claimer states it is ISO/IEC 27001:2022 certified, registered with the ICO, GDPR compliant with a Data Processing Agreement available, runs on Google Cloud, supports two-factor authentication, SSO and SAML 2.0, uses single-tenant data isolation and encryption, and does not use customer data for AI model training. An Enhanced Support tier carries an SLA with 24/7 priority support and a 99.50% uptime commitment.

In its earlier direct-to-claimant form, Claimer let companies upload a claim and pull figures from their accounting software, with in-house tax specialists checking and optimising the claim before it was filed. The company said this approach was roughly 10x faster and up to 6x cheaper than using a tax consultant, and reported processing claims from £1,000 to over £2 million with no rejections or reductions.

Founding story

Claimer was founded in January 2018 by Adam McCann and launched in April 2019. McCann described the R&D tax relief scheme as run by HMRC and allowing UK businesses to claim back up to 33% of research and development costs as a cash payment, and argued that most accountants lacked in-house expertise and referred clients to specialists whose process was slow, expensive and frustrating. Andrew Easter is named as co-founder and CTO alongside McCann as CEO.

Business model

Claimer sells software to R&D tax advisors and accountancy firms that prepare claims on behalf of their clients, positioning itself as a technology partner embedded in the advisor's existing claim process. Earlier in its history the company worked directly with claimant companies, combining a self-serve platform with in-house tax specialists who reviewed and optimised claims before submission to HMRC.

Historically Claimer charged claimant companies a success-based fee of 5% or less of the R&D tax saving or credit received, capped at £10,000. Its current advisor-facing offering includes tiered support, with an Enhanced Support option carrying a service-level agreement.

Traction

By September 2022 Claimer reported having filed over 700 claims successfully and having been used by hundreds of venture-scale companies. As of 2025 it states that 30% of advisor-submitted UK R&D claims involve its technology and that it serves top 20 accountancy firms and 50+ R&D tax credit consultancies. In 2020 it reported processing claims from £1,000 to over £2 million with a 100% success rate and five-star Trustpilot ratings.

Latest developments

As of 2025 the site states that 30% of advisor-submitted R&D claims in the UK involve Claimer's technology and that the company works with top 20 accountancy firms and more than 50 R&D tax credit consultancies. The platform's published feature set centres on claim notifications, AI-driven narrative preparation, R&D financials collection, one-click Additional Information Form submission and HMRC claim progress tracking, supported by ISO/IEC 27001:2022 certification.