Finistry

Filing & Submissions

Filing & Submissions guides for cis subcontractors.

10 min read

CIS Self Assessment: How to File Your Tax Return as a Subcontractor

Learn how CIS subcontractors file a Self Assessment tax return, claim expenses, offset CIS deductions against tax, and get a refund. Step-by-step guide.

12 min read

CIS Monthly Returns Explained: CIS300, Deadlines & Example

CIS monthly returns (CIS300) explained: who files them, the 19th deadline, a worked CIS300 example at 20% and 30%, nil returns, and late-filing penalties.

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