konfab
Honorary Master
Nope. Unless you can show your employer that you have more than one client, they will deduct income tax.The only way this could really work is if everyone became an independent contractor to the company they work for, and then registered themselves as provisional tax payers.
While it is almost impossible for this to work for everyone at a large scale, you could probably make a sizeable dent in tax revenue if only "high earners" in a company did this. Think C level execs and key positions like senior developers/engineers etc.