Software R&D Tax Relief
Claims & Tax Credits for UK Software Firms
Professional R&D tax relief claims for software companies. SaaS, AI/ML, real-time systems, IoT platforms and developer infrastructure.
Qualifying Software R&D Activities
Software companies can claim R&D tax relief for engineering work that seeks an advance in computer science or software technology by resolving genuine technological uncertainty. If your software supports engineering projects, see our engineering R&D tax relief service.
Novel platform architectures, event-driven systems and scalable services that resolve genuine technical uncertainty.
Examples:
- Event-driven architectures
- Distributed systems design
- Microservices decomposition
- Real-time data pipelines
Algorithm development, model training and data engineering work where the technological outcome is not readily deducible.
Examples:
- Novel ML models & training pipelines
- Computer vision research
- NLP and LLM-integrated systems
- Predictive analytics development
Engineering work to overcome performance constraints, throughput limits, latency targets or resource ceilings.
Examples:
- High-throughput stream processing
- Database write performance tuning
- Concurrency & async modelling
- Caching strategy trials
Resolving uncertainty in connecting heterogeneous systems, protocols, devices or third-party platforms.
Examples:
- IoT device protocol integration
- Legacy system modernisation
- API gateway engineering
- Cross-platform synchronisation
Software Sectors We Support
We work with software businesses across product, infrastructure and data-led R&D, understanding the qualifying activity in each sector.
- Multi-tenant architectures
- Real-time collaboration engines
- Workflow automation R&D
- Plug-in & extensibility design
- Low-latency trading systems
- Risk modelling engines
- Open Banking integrations
- AML/KYC algorithm R&D
- Novel model training
- MLOps pipelines
- Computer vision R&D
- LLM-integrated products
- Device telemetry platforms
- Edge compute prototypes
- Protocol bridging
- Sensor data normalisation
- Clinical decision systems
- Medical imaging algorithms
- Genomic data tooling
- Compliance-grade platforms
- Build & deployment innovation
- Observability platforms
- Performance tooling
- Novel data stores & caches
Software Development R&D in Practice
A real-world example of how Lexmore translates technical uncertainty into a robust, HMRC-aligned R&D tax relief claim.
Event-driven platform built to synchronise high-volume IoT data at low latency across distributed factories.
The baseline
A software development company undertook a project to develop an enhanced real-time data processing platform capable of aggregating and synchronising high-volume data streams from multiple third-party industrial IoT devices operating across distributed manufacturing environments. Existing platforms were unable to reliably process and normalise the volume, frequency and variability of incoming machine data whilst maintaining the low-latency performance required for real-time operational decision-making.
The goal
The company sought to achieve an appreciable improvement through the development of a novel event-driven processing architecture capable of dynamically validating, transforming and synchronising inconsistent machine telemetry data across multiple hardware protocols and network conditions.
Technological uncertainties
Whether high-frequency data streams from incompatible hardware devices could be synchronised reliably within strict latency tolerances.
How the platform could dynamically recover from packet loss, malformed data and intermittent connectivity without compromising processing stability.
Whether distributed processing methodologies could maintain scalability whilst preserving real-time performance requirements.
How database write performance and asynchronous processing behaviour would interact under peak-load production environments.
Activities undertaken
- Software architecture design and prototyping
- Development and testing of novel data normalisation algorithms
- Stress testing under simulated high-volume device loads
- Comparative trials of distributed processing and caching methodologies
Software R&D Tax Relief Benefits
Meaningful Cash Benefit
Software companies can typically recover a meaningful percentage of qualifying R&D spend, whether claiming under the SME scheme or the merged RDEC-style scheme.
Loss-Making? Still Claimable
Loss-making software companies can still receive a cash benefit based on qualifying R&D costs.
Developer Time Qualifies
Software architects, engineers, QA and DevOps time on qualifying projects is eligible for relief.
Cloud & Tooling Costs
Cloud compute, licensed software and data costs used in qualifying R&D work can be included in claims.
R&D Tax Relief Calculator
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For financial periods starting on or after 1 April 2024
Tell us about your business
Total spend on qualifying R&D activities (staff, subcontractors, consumables, software, utilities).
Software R&D Key Facts
Essential information about R&D Tax Relief for software companies
Not All Software Qualifies
Routine application development does not qualify. The work must seek an advance in computer science or software technology, and resolve uncertainty a competent professional could not readily deduce.
Architecture & Performance Counts
Genuine work on scalability, latency, throughput and concurrency models is often qualifying R&D when the outcome is uncertain.
AI/ML & Data Engineering
Novel models, training pipelines, data normalisation algorithms and integration of advanced AI capabilities frequently qualify.
Failed Spikes Still Qualify
Prototypes and experiments that did not succeed remain eligible. The test is whether technological uncertainty was being resolved.
Cloud & Tooling Costs
Cloud compute, licensed software, data feeds and certain consumables used in qualifying R&D are eligible costs.
Subcontracted Development
Externally contracted developers can be eligible costs depending on the scheme and arrangement, and we'll guide you through the rules.
Ready to Claim Your Software R&D Tax Relief?
Let's work together. Call or message us today. No commitment, no pressure and no obligations. Just an honest, expert conversation regarding your eligibility for us to show you how Lexmore can make a difference for you.