How HMRC use IT systems to seek out tax evaders

There is no doubting the resolve of HMRC to track down and prosecute tax evaders.

The Government has committed to spend £917m to tackle tax evasion and raise an additional £7bn each year by 2014/15.

HMRC are using 2,500 staff to tackle avoidance, evasion and fraud, there is also a website to help those who want to declare income

In the search for tax evaders, HMRC have a £45m computer system called Connect which in 2011 delivered £1.4bn in tax revenue and the system is getting bigger and better all the time. According to Accounting Web:

It uses a mathematical technique to search previously unrelated information and detect otherwise invisible ‘relationship’ networks. Using Connect, HMRC sifts through information on property transactions at the Land Registry, company ownerships, loans, bank accounts, employment history, voting and local authority rates registers and compares with self-assessment records to spot taxpayers who might be under-declaring or not declaring income.

Last year Connect made links between tax records and third party data from hospitals, pharmaceutical companies, insurers and even gas SAFE registrations. DVLA records and the shipping and Civil Aviation Authority registers help identify owners of cars and planes who declare income that the computer suggests cannot support such purchases.

In addition HMRC have also identified 200 accountants, lawyers and professionals who advise on tax avoidance structures and its currently unclear how HMRC will be dealing with them and their clients.

It is important to remember that most people pay the correct tax, in fact HMRC calculate that 93% of tax due is paid correctly, its only a small minority who try to evade tax.