Definition and Scope

Corporation Tax is levied by HMRC on the net profits of limited companies. It is imperative to note that this tax is unique to the limited company structure; it does not apply to partnerships or sole traders, who are instead subject to personal income tax regimes.

Deadlines and Compliance

HMRC maintains a strict distinction between a company’s financial year (which may begin in any month and runs for 12 months) and the government’s tax year (6 April to 5 April).

Professional compliance requires adherence to the hard deadline for payment: tax must be remitted no later than 9 months and one day after the end of the company's financial year. For example, a business with a financial year ending 30 November must ensure payment is cleared in HMRC’s account before the end of August the following year to avoid automatic penalties.

Strategic Allowances and Rates

• Rates: Small businesses with profits up to £300,000 currently benefit from a 19% rate. Profits exceeding this threshold are subject to higher rates.
• Annual Investment Allowance (AIA): A critical strategic lever for fleet renewal is the AIA. Small and medium transport operators can claim up to £500,000 for the purchase of new vehicles. By utilising the AIA and other capital allowances, managers can offset these significant capital expenditures against profits, calculating tax based on an "adjusted" net profit that reflects the true cost of business investment.

Documentation Requirements

To support an annual tax return, a business must maintain and provide:

• Trading accounts
• Comprehensive Profit and Loss statements
• Balance sheets