Rules of thumb abound, the most popular of which is 1/2 of what the co's hourly rate is, stepped down from license thru greenhorn.
But even this has succumbed to the rising cost of benifits (if applicable) as well as Big Bro's cut.
Some states even dictate this, as Vermont once did, but thier recommendations equate to the average burger flipper, not incentive IMO.
If i were to do it over again, as an apprentice i'd simply sub out to a number of contractors. An apprentice can also obtain contractors insurance if your wondering
(i've asked).
Add in your schooling & health ins. costs for overhead and you'll still make more in 2/3 of the yr than most in the whole of it because one can live well on paper if one either understands the mechanics or hires an accountant that does.
