Systems and processes: HMRC information systems: direct tax: COTAX
COTAX is the Company Tax computer system that deals with the assessment and collection of Corporation Tax (CT).
It is a ‘process now, check later’ system. Companies are required to file returns and pay tax by prescribed dates. HMRC then has a fixed period in which to begin an enquiry to check the accuracy of a return.
COTAX roles and access
The COTAX role you are allocated is determined by your job role and grade. All roles are allocated via your manager using SRS.
Access to COTAX is via My Services / Corporate Services / Companies / CT View.
COTAX is allocated using a Management Unit ID (MUID).
From 1 April 2011 most companies have had to file their company tax returns online for all Accounting Periods ending on or after 1 April 2010. This includes the accounts and computations elements of such returns.
You can also view an online return, using the service View CT Returns Small and Medium service accessed via My Services / Corporate Services / Companies / Vies CT Returns Small and Medium. Role is allocated via your manager using SRS.
COTAX and Labour Providers
Information that can be obtained from COTAX includes the following
- Corporation Tax Return entries - declared turnover can be a useful tool as a comparison to submitted information on VAT Returns.
- Corporation Tax Return filing history
- Payment and debt information
- Company details
- Agent details
Useful links and guidance
COM - COTAX Manual - Provides procedural help in using the COTAX system and technical/background information and Corporation Tax
COTAX System Help (COSH) - Instructions on the use of functions in the COTAX system. You can access COSH by using the Help button available on each COTAX screen, or by pressing the F1 Key
COTAX Business Help Desk - Help with problems you come across when you’re using COTAX