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Plain-English guides to UK Corporation Tax and CT600 filing.

7 results for “SME”Clear search
23 February 2026

R&D Tax Credits for Small Companies: Save Up to 27% on Innovation Costs

How SME R&D tax relief works for small companies. Qualifying activities, how to calculate the benefit, and reporting on your CT600.

ct600r-and-dtax-creditscorporation-taxinnovation
22 February 2026

Research & Development (R&D) Tax Credits on CT600: SME Guide 2026

Complete guide to claiming R&D tax credits on your CT600. Covers the merged R&D scheme, qualifying expenditure, CT600L supplementary page, HMRC compliance checks, and cash credits vs tax reduction.

ct600R&D tax creditsresearch and developmentCT600Lcorporation tax
21 February 2026

R&D Tax Relief for SMEs: How the Merged Scheme Works and How to Claim on Your CT600

Understand the merged R&D tax relief scheme for SMEs from April 2024, qualifying expenditure, enhanced rates, and which CT600 boxes to complete.

R&Dtax reliefCT600SMEHMRCcorporation tax
21 February 2026

R&D Tax Credits for SMEs: Complete Guide to Claiming

How UK small and medium-sized companies can claim R&D tax credits. Covers eligibility, qualifying costs, calculation examples, the merged scheme, and how to include R&D relief on your CT600.

R&D tax creditsresearch and developmentSMEcorporation taxCT600tax reliefHMRCinnovation
21 February 2026

CT600 vs Self Assessment: What's the Difference? (Company vs Personal Tax)

CT600 vs Self Assessment: the key differences between company tax returns and personal tax returns. Who files which and why.

ct600self assessmentsa100corporation taxpersonal taxcompany directorhmrc
19 February 2026

R&D Tax Relief for Small Companies: What to Claim on Your CT600

R&D tax credits for SMEs: what qualifies, how to calculate the relief, and which CT600 boxes to complete. Plain English guide.

12 February 2026

Do I Need an Accountant to File My CT600?

Honest assessment of when you need an accountant for CT600 filing vs when you can do it yourself. Costs, complexity, and decision factors explained.

ct600accountantDIY filingsmall business