Sandman:
Income tax is not an efficient form of collecting tax because the rich employ accountants tr evade paying , that is not a reason for abolishing it. removing loopholes might help.

If you 'ran 5 shops for 7 years' and dealt with the VAT (Note capitalisation of the Initialism), I would hope that someone pointed out to you the difference between 'evasion' and 'avoidance'. Any accountant advising on evading/evasion risks being struck-off and prosecuted. 'loopholes' relate to avoidance, not to evasion.