UK · Contractors

Contractor Bookkeeping & Tax Prep for the UK

UK contractors need bookkeeping that understands IR35, dividend vs salary, and irregular project income. FinnAccountings keeps your books organised and surfaces tax planning questions for you and your adviser.

Contract and day-rate income tracking
Employers Liability insurance offer
Public Liability insurance offer
Professional Indemnity insurance offer
IR35 and outside-IR35 expense handling
Self assessment and corporation tax prep
Dividend and salary planning support
VAT returns for VAT-registered contractors
Cashflow forecasts between contracts

Accounting for UK contractors

Contractors must decide between umbrella employment, sole trade, or personal service companies. Each path changes how income tax, NI, and VAT apply to contract income and expenses.

FinnAccountings models take-home pay under different structures and keeps mileage, subsistence, and equipment claims documented.

IR35 and off-payroll considerations

Inside-IR35 engagements may flow through umbrella PAYE, while outside-IR35 work often runs via a limited company. The platform separates income streams so SA100 figures stay accurate.

Our contractors industry guide explains record-keeping expectations for HMRC reviews.

Working in construction? CIS applies before IR35

Contractors and subcontractors in construction sit inside the Construction Industry Scheme, where tax is deducted from the labour element of every invoice at 20% or 30% before you are paid. Those deductions are reclaimed later through Self Assessment or, for limited companies, through the Employer Payment Summary.

Our CIS guide covers deduction rates, monthly CIS300 deadlines, gross payment status, and how to track what you are owed back.

Read the CIS tax UK guide

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Ready to prepare your next VAT period?

Organise transactions and receipts, flag what is missing, and prepare VAT and bookkeeping packs for Ireland and the UK — with you in control before anything is shared or filed.