But it works, simplified, like if you owed $500 to CA but paid state XX $300, then you only have to pay CA the $200 difference.CA may not be able to get blood from a turnip, but they will suck that turnip dry before they let it go.Likewise if you, say, play professional sports for a team in state XX, live in state XX, make $20,000,000 a year, play 1 out of 20 games in CA, they want that 1/20th of that two million taxed in CA...but they will give a credit for the taxes you paid in state XX according to the interstate agreement. 

Hi Malachi,The pushback you're receiving from prospects regarding your screening link could be due to the amount of scammers circulating the internet nowadays.