CIS — Guides, Tips & Expert Advice
Construction Industry Scheme guides — CIS deductions, verification, monthly returns, and subcontractor tax.
52 articles on CIS
Stuck on 30% CIS Deduction? Here's How to Fix It
If 30% is being deducted from your CIS payments, you are likely overpaying. Here is how to get back to 20% or even 0%.
CIS and MTD: How Making Tax Digital Affects Construction
Making Tax Digital is changing how construction businesses manage their tax affairs. Learn how MTD interacts with CIS and what you need to prepare for.
CIS and Self Assessment: How They Interact
CIS deductions are advance tax payments, not a final settlement. Learn how to correctly report CIS on your Self Assessment and claim refunds you are owed.
CIS Explained: The Complete Guide for Contractors and Subcontractors 2026
Everything you need to know about the Construction Industry Scheme in 2026, from registration and verification to deductions, returns, and compliance.
CIS Contractor Obligations: Your Legal Responsibilities
As a CIS contractor, you have specific legal obligations. Learn what you must do to stay compliant, from verification and deductions to returns and statements.
CIS Deduction Rates: 20% vs 30% Explained
Why are there two CIS deduction rates? Learn the difference between 20% and 30%, what determines your rate, and how to move to the lower rate.
CIS Deductions: How to Claim Back What You're Owed
If you are a CIS subcontractor, you may be owed a tax refund. Learn how CIS deductions work, how to claim them back through Self Assessment, and how to avoid common mistakes.
CIS Deemed Contractor: Does Your Business Count?
You do not need to be a construction company to be a CIS contractor. Learn about deemed contractor status and whether your business qualifies.
CIS and Domestic Work: When CIS Doesn't Apply
CIS does not apply to all construction work. Learn when the domestic work exemption applies and when you are outside the scope of CIS.
CIS Gross Payment Status: How to Qualify and Why It Matters
Gross Payment Status lets subcontractors receive full CIS payments without deductions. Learn how to qualify, apply, and maintain GPS to improve your cash flow.
CIS for Labour-Only Subcontractors
Labour-only subcontractors face specific CIS rules. Learn how deductions work when you supply only labour, with no materials to offset.
CIS Late Filing Penalties and How to Avoid Them
CIS late filing penalties start at £100 and escalate quickly. Learn the penalty structure, how to appeal, and how to ensure you never file late.
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