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R&D Tax Relief Specialists

Over 70% of eligible UK businesses miss out on R&D tax relief. Don’t let complex rules or fear of HMRC scrutiny cost you. At Sigma, we specialise in maximising claims while ensuring full compliance, so you recover every penny you’re owed. Claim your free assessment today and turn your innovation into cash.
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Are You Missing Out on Valuable R&D Tax Relief?

We understand how easy it is to get caught up working in your business – managing operations, clients, and day-to-day challenges – that you simply don’t have time to look into valuable incentives like research & development tax relief. Yet this scheme exists specifically to reward businesses like yours for pushing boundaries, investing in innovation, and developing new products, services, or systems that advance your industry.
Many businesses face two key challenges: identifying eligible R&D activities and navigating HMRC’s complex claim process. Without expert guidance, you could miss out on thousands or even submit an incorrect claim. That’s where our R&D tax credit specialists step in. We handle the entire process from identifying qualifying projects to preparing watertight claims, ensuring you maximise your benefit while staying fully compliant. With our R&D tax credit services, you focus on innovation; we’ll secure the financial reward you deserve.

Ready to claim what’s yours?

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R&D Tax Relief

How We Maximise Your R&D Claims

At Sigma Chartered Accountants & Tax Advisors, we specialise in unlocking the full potential of R&D tax relief for innovative businesses. Our end-to-end service ensures you claim every penny you’re entitled to without the stress or complexity.

Eligibility Assessment

We conduct a thorough review of your projects to identify all qualifying R&D activities. Many businesses overlook eligible work; we ensure nothing is missed.

Maximised Claim Value

Our specialists dig into your costs—staff wages, subcontractor fees—to secure your maximum relief. Typical claims uncover 20–30% more than self-submitted ones.

Technical Report Writing

We craft compelling technical narratives that satisfy HMRC's stringent requirements. Our reports clearly demonstrate how your projects advance science or technology.

Financial Optimization

We precisely calculate qualifying expenditures, including often-missed items like software licenses or prototype materials. Every valid pound strengthens your claim.

HMRC Compliance

Our team ensures your claim meets requirements before submission. We anticipate and address potential scrutiny points proactively.

Claim Tracking

We handle the entire submission process and act as your liaison with HMRC. You'll receive regular updates until your funds are secured.

Enquiry & Defence

If HMRC questions your claim, our specialists provide robust support and documentation. We've successfully defended £millions in R&D claims.

R&D Strategy Advice

We help structure future projects to maximise relief potential. Our guidance turns tax planning into an innovation funding tool.

How Our R&D Tax Relief Services Work & What You Gain

Sigma Chartered Accountants & Tax Advisors simplify the R&D claims process to maximize your benefits—whether you’re a profitable firm or a loss-making SME—with minimal effort on your part.

Merged RDEC: We blend SME and RDEC schemes to optimise your claim value when you exceed thresholds.
Enhanced R&D Intensive Support (ERIS): Specialised assistance for R&D-intensive businesses to access enhanced benefits.
R&D Expenditure Credit (RDEC): Maximised claims for larger companies under the RDEC scheme.
Enquiry Support for R&D Claims: Full defence representation if HMRC questions your claim.

You'll get:

  • Higher claim values through expert identification of all eligible costs
  • Complete HMRC compliance with watertight documentation
  • Time savings with our end-to-end claim management
  • Risk reduction through our audit-protected approach
  • Ongoing strategic advice to maximise future claims
Tax Relief

Excellence in Claiming R&D Tax Relief

As leading R&D tax credit consultants, we don’t just help you claim R&D tax relief, we maximise it. Our proven track record comes from a meticulous approach that combines technical expertise with in-depth HMRC knowledge, ensuring every claim we submit is optimised, compliant, and defended. While others miss opportunities or trigger enquiries, we’ve successfully secured millions for clients from startups to multinationals by turning complex legislation into clear financial benefits. When you partner with us, you’re not just accessing a service; you’re gaining a competitive edge.
Start Your R&D Relief Claim

Your R&D Deserves Rewarding: Claim Your Tax Cash Today!

Get Your Free, No-Obligation Assessment >>> Speak Directly With Our R&D Tax Relief Specialist
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Industry-Specific R&D Tax Relief Expertise

We understand that innovation looks different across sectors. Our R&D tax credit specialists have deep experience tailoring claims to your industry’s unique challenges and opportunities, ensuring you maximise every eligible penny.

We Successfully Claim For

Manufacturing & Engineering

  • Product redesigns, process improvements, and development
  • Claimable costs: Materials, tooling, testing, automation systems

Software & Tech

  • AI development, bespoke systems, cybersecurity innovations
  • Qualifying activities: Architecture redesign, algorithm creation

Life Sciences & Pharma

  • Drug discovery, medical devices, and clinical trial methodologies
  • Often missed: Failed trials, regulatory compliance, R&D

Clean Energy & Sustainability

  • Renewable tech, carbon reduction systems, energy efficiency
  • Special schemes: Enhanced relief for green innovations

Construction & Architecture

  • Novel building techniques, sustainable materials, and BIM systems
  • Key focus: Overcoming technical uncertainties in projects

Food & Beverage

  • Recipe development, packaging innovations, safety processes
  • Hidden claims: Production line modifications, preservation tech

Automotive & Aerospace

  • EV components, fuel efficiency, and aerodynamic testing
  • RDEC focus: Large-scale R&D projects

Creative & Digital Media

  • Game engines, VFX pipelines, immersive tech development
  • Unique angle: Technological advancement in creative tools
Why Choose Us

Why Choose Sigma as Your R&D Tax Relief Specialists?

Not all R&D tax advisors are created equal. At Sigma Chartered Accountants & Tax Advisors, we combine technical expertise with commercial insight to deliver claims that are maximised, defensible, and strategically valuable to your business.

Deep HMRC Process Knowledge

Our team includes former HMRC inspectors who understand exactly how claims are assessed – we pre-empt scrutiny before it happens.

Average 27% Higher
Claims

Proprietary audit methodology uncovers often overlooked additional critical costs like subcontractor time, software licenses, and prototype materials.

Full Compliance Guarantee

Every claim undergoes a fully rigorous and comprehensive 4-stage technical review. We’ve maintained a 100% enquiry defence record since 2015.

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