Im plumber level 2, with experience and CSCS blue card.....It is good idea start working for myself? How much many i need for starting plumbing business?
You can weigh up the costs yourself.
Public Liability insurance
Van, fuel, insurance,road tax, repairs, etc
Tools, power tools, some you will already have no doubt.
Accountant costs.
If you intend working on Gas, there will be Training, Qualifications and Membership.
Wages PA.
Adverts
Those things give a good idea.
If you have work, the charges you make should be designed to cover all those costs above and more besides.
The big questions are:-
Can you be your own worst enemy and put the needs of your business first?
Your Business only looks after you, if you look after it!
Are you prepared to go out at all times of day, evening, weekend etc, to do work, Price jobs, Deal with things under warranty, keep the customer satisfied?
It is more a way of life than a job!
You will lie awake at night, if you are the type (most successful people I know do), thinking about work.
You will need to say yes please to jobs you detest because you need to keep the Wolf from the door.
Fix the roof when it's not raining! don't slack off because you've done well one week!
On the plus side, you have a sense of freedom that you seldom get when working cards in!
You can, if you set your stall out right and make sue you charge properly, do well financially.
If you think you are the type, I would recommend you go for it.