@Janolo71 Not sure what was going on with the previous user who was having 10% of his check withheld as a "fee" but was a self-employed contract worker whose earnings would be reported on a 1099Misc.
Hopefully you are not in a similar fishy situation.
If your earnings will be reported on a 1099Misc you can expect to pay 15.3% for Self-Employment tax--Social Security and Medicare--plus ordinary income tax at your tax rate. If you are being paid without any SS, Medicare or taxes being withheld, you are not receiving "net" pay. You are receiving only your gross pay. So please explain if anything is being withheld. Why do you say you have "net" and "gross" pay?
https://ttlc.intuit.com/questions/2584365-am-i-an-employee-or-an-independent-contractor
https://ttlc.intuit.com/questions/2902389-why-am-i-paying-self-employment-tax
https://ttlc.intuit.com/questions/2903027-how-do-i-report-income-from-self-employment
https://ttlc.intuit.com/questions/1901110-do-i-need-to-make-estimated-tax-payments-to-the-irs
https://ttlc.intuit.com/questions/3398950-what-self-employed-expenses-can-i-deduct
If you are new to being self-employed, SuperUser @VolvoGirl and @Critter have some good advice you should read.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
