I might be wrong, but
@baka may well have have meant $2500 per month, but I am often wrong
I refer you back to the 1st line in my post - "If you want to abide by the law". I was only trying to highlight some of the costs involved in employing someone, legally.
At $8k per month that's just short of $100k per year, not an insignificant amount that could well draw the interest of the tax man.
One site I used to design 3d avatar outfits for bought me in enough to cover my subscription plus some. I was more than happy to leave this in my online account to pay for in game stuff. If I had wanted to withdraw it, they issued a tax form with the payment, it was an American form and I never got it, so I can't remember what it was, but as I understand it, the other part of the form went to the US IRS.
Pateron and Paypal will want to remain above board so will happily share all payment info with the tax man if when requested. Also in the UK the tax man gets a summary of 1/4 of all bank accounts every year over a 4 year rotation. To avoid tax here is called fraud and can result in 7 years in prison.
I think a dev will need to be REALLY careful when they have an income above a few hundred a month, maybe upto $1000. What they actually do is totally upto them and none of my concern.