How much can a UK startup claim in R&D tax credits?

Under the merged scheme, UK startups claim a 20% credit on qualifying R&D expenditure. R&D-intensive SMEs — where qualifying R&D exceeds 30% of total expenditure — qualify for 27%. A loss-making startup spending £100,000 on qualifying R&D receives £20,000 as a cash payment from HMRC at the standard rate.

Does software development qualify for R&D tax credits?

Yes. Software development qualifies when it involves resolving scientific or technological uncertainty — meaning your engineers did not know the solution at the start and had to investigate or experiment to find it. Building novel algorithms, developing machine learning systems with uncertain performance characteristics, and creating new database architectures all commonly qualify. Configuring existing frameworks or building standard features does not.

How long does an R&D tax credit claim take?

HMRC's target processing time for straightforward R&D repayment claims is 28 days. Well-prepared claims submitted with a full technical narrative and accurate CT600L are typically processed within four to six weeks. Claims selected for compliance review take three to six months; formal enquiries can take 12 to 18 months.

Can a loss-making startup claim R&D tax credits?

Yes — under the merged scheme, loss-making companies receive the R&D credit as a direct cash payment from HMRC at 20% (or 27% for R&D-intensive SMEs) of qualifying expenditure. This payable credit is subject to a cap of £20,000 plus 300% of total PAYE and NIC liability for the period.

UK Startup Tax Relief: Complete 2025–26 Guide | SEIS, EIS, R&D Credits & EMI Schemes

Quick Answer

What tax reliefs can a UK startup claim?

UK startups can access SEIS (50% investor income tax relief), EIS (30% investor relief for larger rounds), R&D tax credits (20–27% cashback on qualifying development expenditure), EMI share option schemes (discounted options for employees), Annual Investment Allowance (100% capital deduction on equipment), and sector-specific reliefs including Video Games Tax Relief, Animation Tax Relief, and High-End TV Tax Relief.

Find an Startup Tax Relief specialist in your city

Ready to claim your Startup Tax Relief?

Get matched with a vetted specialist accountant. Free initial consultation, transparent fees, no obligation.

UK Startup Tax Reliefs: The Complete Guide

What tax reliefs can a UK startup claim?

Find an Startup Tax Relief specialist in your city

London & South East

Midlands

North West

North East & Yorkshire

South West & Wales

Scotland & Northern Ireland

Ready to claim your Startup Tax Relief?