
CIS Tax Returns
CIS tax return accountants supporting subcontractors across the UK
If you work in construction as a subcontractor under the Construction Industry Scheme (CIS), tax is usually deducted from your payments before you receive them. These deductions are treated as advance payments towards your Income Tax and National Insurance, and must be reconciled through a Self Assessment tax return each year.
At Treggena Ltd, we support CIS subcontractors across the North East and throughout the UK with clear, reliable CIS tax return services. We ensure your income and deductions are reported correctly, allowable expenses are claimed appropriately, and any tax refund due is calculated accurately and submitted to HMRC.

Who needs to complete a CIS tax return?
Construction subcontractors
Individuals paid under CIS deductions must report income through Self Assessment.
Self-employed tradespeople
Builders, electricians, plumbers and similar trades working under CIS require annual returns.
Subcontractors with multiple contractors
Those working for several contractors need consolidated reporting of CIS deductions.
Individuals with CIS refunds due
Overpaid tax through deductions may be reclaimed through a return.
Subcontractors with additional income
Those with CIS income alongside other earnings must report combined income.
How CIS tax returns work
Under CIS, contractors deduct tax from subcontractor payments at source, usually at a standard rate set by HMRC. These deductions are recorded against your National Insurance number and treated as tax already paid. At the end of the tax year, your total income and expenses are calculated through Self Assessment, and CIS deductions are offset against your overall tax liability.
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Because deductions are often higher than the final tax due, many subcontractors receive refunds once their return is prepared. Accurate reporting ensures all deductions are captured correctly and allowable business expenses are included, so your true tax position is calculated.


Who we support with CIS tax returns
Individual subcontractors
We prepare returns for tradespeople working under CIS deductions.
Construction trades
We support builders, electricians, plumbers and similar roles.
Multi-contractor workers
We consolidate income and deductions from multiple contractors.
Subcontractors with other income
We report CIS alongside additional self-employed or employment income.

How Treggena Ltd supports CIS subcontractors
Our CIS tax return service begins with reviewing your income records, contractor statements and CIS deduction summaries to ensure all payments and tax withheld are captured. We then calculate your taxable profit after allowable expenses and offset CIS deductions against your liability. Where a refund is due, we ensure it is claimed accurately through HMRC.
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Each subcontractor is supported by a dedicated accountant who understands their work pattern and remains a consistent point of contact. This ensures clarity each year and support whenever work or income changes. Our aim is to ensure your CIS tax position remains organised, compliant and clearly understood.

Speak to a CIS tax accountant
If you work under the Construction Industry Scheme and need support with your tax return or CIS refund, our team can provide clear advice and reliable preparation tailored to your situation.
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Contact an accountant today to ensure your CIS income and deductions are reported accurately and any refund due is calculated correctly.
