UK businesses can now claim cloud computing costs under the RDEC scheme, covering expenses directly linked to R&D activities for tax relief.

From 1 April 2023, UK businesses can claim cloud computing costs as part of the R&D Expenditure Credit (RDEC) scheme. This means costs like data storage, cloud platforms, and processing services tied to R&D projects are now eligible for tax relief. Here's what you need to know:
Proper documentation and compliance with HMRC guidelines are critical for successful claims. Working with experts can help ensure accuracy and maximise relief.
Understanding which cloud computing costs qualify under the Research and Development Expenditure Credit (RDEC) scheme is essential to ensure your claim is accurate and maximised. To be eligible, these costs must directly relate to specific R&D activities and be considered routine operational expenses (revenue expenditure), rather than long-term investments (capital expenditure). Here's a breakdown of what qualifies and what doesn't.
To qualify, cloud computing costs must be directly tied to your R&D projects and categorised as day-to-day operating expenses. Eligible costs include:
Certain cloud-related expenses fall outside the scope of RDEC. These include:
| Cloud Computing Cost | Qualifies under RDEC? | Key Requirements |
|---|---|---|
| Data storage for R&D project datasets | Yes | Must be directly linked to R&D activity |
| Licence for datasets used in R&D | Yes | Only if used specifically for R&D purposes |
| Cloud platforms for R&D computation | Yes | Must directly support an R&D project |
| Processing power for R&D simulations | Yes | Requires clear documentation of R&D usage |
| Private cloud infrastructure setup | No | Recognised as capital expenditure |
| General business file storage | No | Not directly related to R&D activities |
| Email hosting and communication tools | No | Primarily administrative functions |
| Mixed-use services without apportionment | No | Costs not segregated between R&D and non-R&D uses |
To ensure your claim is successful, focus on costs that are directly linked to R&D activities and maintain clear documentation to support your expenses. This clarity is key to distinguishing qualifying costs from those that don't meet the criteria.
Claiming RDEC for cloud computing expenses requires careful preparation, accurate documentation, and adherence to HMRC's guidelines. The process involves three key stages, each crucial to ensuring your claim is both maximised and compliant.
The first step in a successful RDEC claim is pinpointing and documenting all cloud computing costs that are directly tied to your R&D projects. This means reviewing invoices to identify expenses like data storage, cloud-based hardware, operating systems, and software platforms used specifically for research purposes.
It's essential to maintain clear evidence linking each cloud service to your R&D activities. HMRC may request proof during compliance checks, so your records must clearly separate R&D-related costs from those incurred for general business operations.
Keep a well-organised archive of invoices, usage logs, project documentation, contracts, and technical reports that demonstrate how cloud services support your R&D. Companies with thorough records tend to find the claims process far smoother compared to those trying to assemble evidence after the fact.
"When we started talking to Zest about R&D Tax it was clear they understood how to put in an effective claim. In the past we have used a third party company to handle our R&D Claims but it was so much easier … with their structured approach to deciding what is eligible, how to break down the costs of the work that would make up the claim, and present the claim in a clear and unambiguous way." - George Smith MD, Walford Timber Ltd
If your cloud services are used for both R&D and other business functions, you'll need to apportion the costs. This can be done using measurable metrics like server time, storage usage, or user access logs to determine the division.
For instance, if your logs reveal that 70% of cloud server time is spent developing a new software algorithm (a qualifying R&D activity), and 30% is used for customer support (non-R&D), then only 70% of the server costs can be included in your RDEC claim. The key is to back up your allocation with solid evidence, such as usage reports and project records.
Your allocation method must be logical, consistent, and supported by clear documentation. HMRC requires businesses to use reasonable and verifiable methods that accurately reflect actual usage. Whether you allocate costs based on time, data usage, or processing power, ensure your approach is applied consistently and backed by robust records.
Properly apportioning costs is critical not only for compliance but also for ensuring the accuracy of your claim. Incorrectly claiming all cloud costs without proper allocation is a common mistake that could lead to HMRC reviewing your claim and potentially imposing penalties of up to 100% of the overclaimed amount.
Once you've allocated costs appropriately, you can move forward with compiling and submitting your claim.
The final step is to prepare your claim by calculating the eligible cloud computing costs based on your allocation method. Ensure all figures are accurate and supported by the required evidence.
Your submission should include detailed breakdowns of cloud-related invoices, usage logs that demonstrate how the services were allocated to R&D projects, and documentation linking specific cloud services to R&D activities. You’ll also need to outline your cost allocation methods. Additionally, complete the relevant sections of your Company Tax Return (CT600) and the R&D Expenditure Credit claim form.
The Additional Information Form (AIF) must also be submitted digitally to HMRC before filing your company’s tax return. If your company hasn’t submitted an R&D claim in the last three years, you’ll need to complete a Claim Notification Form as well.
Your claim should clearly state which R&D tax scheme your company qualifies for, explain why your R&D activities meet the criteria for relief, and detail the costs being claimed. Given the complexity of the process and the risk of retrospective reviews, many businesses choose to work with specialists who can navigate HMRC's requirements and help ensure compliance while maximising the relief available.
Even with thorough planning, businesses often face challenges when claiming RDEC (Research and Development Expenditure Credit) for cloud computing costs. These hurdles highlight the importance of maintaining clear documentation and accurately allocating costs, as discussed earlier. Anticipating these issues and preparing effective solutions can save time and reduce the risk of compliance problems.
One major challenge lies in distinguishing between qualifying and non-qualifying cloud computing costs. Only expenses directly related to R&D activities are eligible for claims, while general business costs must be excluded. This distinction can be tricky, especially since modern cloud services often support both research-related and routine operations.
Another common issue arises with mixed-use services. When cloud resources are used for both R&D and non-R&D purposes, businesses must allocate costs appropriately between these activities. This process can be particularly difficult without detailed usage data to support fair allocation methods.
Insufficient documentation is another stumbling block for many businesses. Failing to maintain adequate records can weaken RDEC claims. HMRC requires detailed evidence linking cloud services to specific R&D projects, such as invoices, usage logs, and project documentation. Attempting to reconstruct this evidence after the fact often results in gaps that undermine the claim's credibility.
Recent updates to eligibility criteria also add complexity. While cloud computing costs are now explicitly eligible, some businesses misunderstand the scope of these changes or mistakenly assume that all cloud-related expenses qualify automatically.
There’s also the risk of including ineligible costs. For instance, claiming the full cost of a cloud service without proper apportionment or including capital expenses that don’t qualify under RDEC can lead to HMRC enquiries.
To make successful claims, businesses must maintain robust and clear documentation that directly links cloud services to R&D activities. This includes keeping invoices, contracts, and usage reports up to date. Contemporary records are far more reliable than trying to reconstruct evidence later.
For mixed-use services, adopt measurable allocation methods based on actual usage data. Clearly document the rationale behind your allocation, as HMRC may require justification during a review. Whether you track time, data usage, or processing power, ensure your method is logical, consistent, and supported by verifiable evidence.
Regular training for your team is crucial to stay aligned with evolving eligibility criteria and HMRC guidance. If you’re uncertain about specific costs or complex scenarios, seeking professional advice can help you avoid costly mistakes.
Conducting internal claim audits is another effective approach. Systematically reviewing claims ensures only directly attributable R&D costs are included and that allocation methods are consistently applied and well-documented.
Setting up dedicated cost centres or project codes for R&D activities can also simplify the process. This practice makes it easier to track and separate qualifying costs from general business expenses, improving both accuracy and efficiency.
The table below outlines frequent errors and practical ways to address them:
| Common Mistake | Recommended Solution |
|---|---|
| Claiming all cloud costs without proper apportionment | Apportion costs based on actual R&D and non-R&D usage, supported by evidence. |
| Insufficient documentation to support claims | Keep detailed records like invoices, usage logs, and project documentation. |
| Misunderstanding current eligibility criteria | Regularly review HMRC guidance and consult experts when needed. |
| Including indirect or general business costs | Only claim expenses directly tied to qualifying R&D activities. |
| Failing to adjust processes for legislative changes | Ensure claims reflect post-April 2023 updates and current guidance. |
| Reconstructing evidence retroactively | Use real-time record-keeping systems from the start of the project. |
| Applying inconsistent allocation methods | Use logical and consistent allocation methods backed by verifiable data. |
It’s worth noting that HMRC can review claims up to four years after submission - or even up to 20 years if dishonesty is suspected. Establishing proper systems and processes not only minimises compliance risks but also ensures you maximise the relief available for your R&D efforts.
Handling RDEC claims for cloud computing costs can be tricky, especially with recent changes in legislation and HMRC guidance. Bringing in specialists can not only help you maximise your claim but also ensure it meets all compliance standards. Below, we’ll explore how expert advisors simplify the process and why teaming up with Zest can make a real difference.
Accurately tracking costs is at the heart of any successful RDEC claim. Expert advisors are skilled at identifying all eligible cloud computing expenses, ensuring nothing is overlooked. They also help allocate costs between R&D and non-R&D activities with precision, while maintaining detailed records to satisfy HMRC requirements.
"Due to their in-depth understanding of R&D claims, they ensured that only eligible costs were submitted as part of the claim, but also made us aware of other costs that could be included that we were previously unaware of in order to maximise the value of the claim."
– George Smith MD, Walford Timber Ltd
Specialists use clear and defensible methods to apportion cloud costs, a crucial step given HMRC's emphasis on "just and reasonable" allocation. Whether through usage logs or project-specific allocations, they create documentation that supports your decisions, reducing the risk of disputes.
Compliance is another key area where experts shine. HMRC can review claims up to four years after submission - or even up to 20 years if dishonesty is suspected - and impose penalties of up to 100% of the relief claimed. Advisors ensure your claims are well-documented and fully compliant, minimising these risks.
Staying on top of HMRC’s evolving guidelines is no easy task, especially with the inclusion of cloud computing costs as qualifying expenditure from April 2023. Many businesses find it challenging to understand how these changes apply to their specific situations [2]. Expert advisors bridge that gap, providing clarity and guidance tailored to your needs.
Zest R&D Tax Advisors stand out because of their focused expertise. Unlike general accountants, Zest specialises in R&D tax relief and Patent Box schemes, making them particularly well-suited for technology-driven businesses navigating the new eligibility rules for cloud computing costs.
Their support covers the entire claim process - from assessing eligibility to preparing and submitting the Additional Information Form (AIF) required by HMRC before the claim is included in your company’s tax return. They also represent clients during HMRC enquiries, ensuring you’re covered every step of the way.
"By developing an understanding of our business and working closely with our Project Manager, Zest Research & Development/Barrie was able to submit a complaint and successful R&D tax relief submission. A fantastic result, which, before their advice and helpful support, we would not have understood or qualified for."
– Joanna Edwards, Director of Edwards Diving Services Limited
Zest operates on a percentage-based fee structure, meaning their success is tied directly to yours. They charge a single fee based on the value of your successful claim, and they defend claims during HMRC enquiries at no extra cost - offering peace of mind and protecting your investment.
"When you work with Zest, our goal is to make the claims process as easy as possible for you. Some clients spend less than half a day on their claim, including time for meetings, information gathering, and reviewing their claim documents."
– Zest R&D Tax Advisors
Their process is designed for efficiency. In most cases, they complete the claim documentation within two weeks of the review meeting, allowing you to stay focused on running your business while they handle the complexities of your RDEC claim.
With HMRC’s increasing scrutiny and the challenges of allocating cloud computing costs, working with specialists like Zest can make all the difference. Their expertise helps you avoid common mistakes while ensuring you claim all the relief you’re entitled to for your R&D activities.
From 1 April 2023, UK businesses conducting R&D can now include cloud computing costs in their claims under the RDEC scheme. This update reflects the growing dependence on cloud infrastructure for tasks like data processing, storage, and analysis in modern research.
Eligible cloud computing costs cover a range of essentials, including data storage, hardware facilities, operating systems, and software platforms directly tied to R&D activities. The scheme offers a 20% credit on qualifying costs - for instance, £100,000 in eligible expenses would result in an additional £20,000 credit. After accounting for corporation tax, this provides a meaningful boost to help sustain R&D projects.
To maximise claims, businesses must carefully apportion cloud computing costs between R&D and non-R&D activities on a "just and reasonable" basis. This means maintaining detailed records to clearly show how cloud services are used for qualifying research versus general business operations.
Common errors to avoid include poor cost allocation, misclassifying expenses, and failing to distinguish between eligible and ineligible costs. These mistakes can be expensive, as HMRC may review claims up to four years after submission - or even up to 20 years in cases of suspected dishonesty.
To properly allocate cloud computing costs between R&D and non-R&D activities under the RDEC scheme, businesses need to evaluate how these expenses directly contribute to qualifying R&D projects. Only costs that are directly tied to eligible R&D work - such as running simulations, analysing data, or developing software - are typically claimable.
Keeping detailed records and documentation is crucial to show how cloud resources are utilised for R&D purposes. For additional clarity and to ensure compliance, seeking professional advice can be incredibly helpful. Zest R&D Tax Advisors offer expert support to guide businesses through this process effectively.
When preparing cloud computing costs for RDEC claims, there are a few common mistakes businesses should avoid. First, make sure to include only the costs directly tied to R&D activities. Expenses for general operations or unrelated cloud services are not eligible for claims.
Second, keep thorough and organised records of how cloud services are used in your R&D projects. This means holding onto invoices, usage logs, and explanations of how these services support your research efforts. Without proper documentation, you risk delays or even having your claim denied.
Finally, if cloud services are used across different business functions, be careful when dividing the costs. Only the portion directly linked to R&D work should be part of your claim. For personalised guidance, reaching out to experts like Zest R&D Tax Advisors can help you stay compliant and make the most of your claim.
Zest’s deep understanding of R&D tax relief ensures your RDEC claims for cloud computing costs are both precise and fully aligned with HMRC’s guidelines. Their expertise allows them to pinpoint qualifying expenses, helping you make the most of your claim.
Partnering with Zest means you’ll receive personalised guidance and support at every step of the claims process. This not only minimises mistakes but also saves your business valuable time, letting you concentrate on driving innovation while they manage the intricate details of your claim.

R&D tax relief for software & SaaS companies: what qualifies, what HMRC treats as routine, and which costs (including cloud) you can claim.

Since 18 May 2026 your R&D tax adviser must be registered with HMRC. Here’s what the rule means and what to check before you let anyone file your claim.

A guide to R&D tax relief for engineering firms: which projects and costs qualify, how the merged scheme and ERIS work, and how to make a claim that survives HMRC.