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Corporation Tax

Log in to Corporation Tax for Agents Go direct to HMRC Online Services

How to use the Corporation Tax for Agents online service How to sign up for and use HMRC's Corporation Tax for Agents online service to file returns and manage clients' tax affairs online

Tax rates Current main rate of Corporation Tax, small profits rate, Marginal Relief thresholds and fractions for calculating relief

Forms for Corporation Tax Download the Corporation Tax forms your client may need to complete and send to HMRC

Tools for Corporation Tax Tools and calculators you might find useful when handling your clients' Corporation Tax matters

Manuals and other reference material for Corporation Tax Comprehensive guidance from HMRC based on tax law and published for the information of taxpayers and their advisers

Go to Corporation Tax pages for businesses Information for companies and organisations on deadlines and requirements, payments, returns, losses, allowances, reliefs and more