Tax Computer Systems was formed in 1991 and has built up an excellent reputation as a trusted supplier of corporation tax technology solutions and services. It has achieved market leadership, based on the success of its suite of corporation tax software applications and services, led by its flagship offering Alphatax. Since then our solutions have been continually developed and shaped to serve the evolving needs of corporation tax departments.



Today Tax Computer Systems serves the needs of over 900 large corporations in the UK and Ireland, as well as almost all of the large accounting firms including 23 of the top 25 UK practices.

We got here by delivering exceptional software and services to all our customers and we have achieved this by investing in the best people and technology for our business.

Because we meet and exceed our customer expectations, we have a continuing customer retention rate in excess of 97%.


Our Business

The company’s sole focus is to provide corporate tax professionals with comprehensive technology solutions that are extraordinarily robust and easy to use. We provide tax technology solutions that manage and automate the end to end corporation tax compliance processes including, year-end tax reporting, HMRC tax computations, forecasting, tax planning and tax management of the compliance cycle. We have built and developed a wide range of corporation tax software that can be tailored for all types of businesses ranging in size. This ensures that everyone can benefit from our exceptional software solutions.

Recent feedback shows that our customers report much-improved efficiency and an equally dramatic reduction in the level of data error when using our products. We pride ourselves in ensuring the customers requirements are our absolute priority in everything we do.

At Tax Computer Systems we are very proud of what we have accomplished but also recognise that our customers will always demand more. To help meet this demand, we employ people who make things happen and encourage their effort with the highest research and development budget in the industry sector.