CIS — Guides, Tips & Expert Advice
Construction Industry Scheme guides — CIS deductions, verification, monthly returns, and subcontractor tax.
52 articles on CIS
Mixed Contracts in CIS — When Some Work Is Excluded
How to handle mixed contracts under CIS when some work is excluded from the scheme. Practical guidance on splitting invoices correctly.
Running a Construction Business — From Sole Trader to Contractor
A practical guide to running a construction business in the UK, from starting as a sole trader to growing into a main contractor.
Builders and General Contractors — CIS and Tax Guide
A complete CIS and tax guide for UK builders and general contractors covering deductions, expenses, VAT and self-assessment for 2025/26.
CIS and VAT: How They Work Together
Understand how CIS deductions and VAT interact in the construction industry, including the domestic reverse charge and its impact on invoicing.
Common CIS Mistakes That Trigger HMRC Penalties
Avoid costly CIS errors with this guide to the most common mistakes contractors and subcontractors make, and the HMRC penalties they can trigger.
How to Switch from CIS Employee to Self-Employed
A practical guide for construction workers switching from employed status under CIS to self-employed subcontractor, covering registration, tax, and what changes.
CIS for Limited Companies: What You Need to Know
How the Construction Industry Scheme applies to limited companies, including registration, deductions, offsetting, and key differences from sole traders.
CIS Monthly Returns: Step-by-Step Filing Guide
A complete guide to filing CIS monthly returns with HMRC, covering deadlines, what to include, how to submit, and penalties for late filing.
CIS Payment and Deduction Statements Explained
What CIS payment and deduction statements are, what they must contain, who issues them, and why they matter for tax returns and refund claims.
CIS Penalties for Late Returns: What to Expect
Understand the penalties HMRC charges for late CIS returns, how the penalty regime works, and practical steps to avoid fines as a contractor.
How to Register as a CIS Subcontractor with HMRC
Step-by-step guide to registering as a CIS subcontractor with HMRC, including what you need, how to apply, and what happens after registration.
CIS Tax Deductions Explained: 20% vs 30% Rates
Understand CIS tax deduction rates of 20% and 30%, how they're calculated, and what determines which rate applies to your construction payments.
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