Poshmark’s fees are straightforward. As stated above, there’s a small commission for each sale. But with that, you get prepaid shipping labels, free credit card processing, customer support, and buyer protection.  Sales tax is automatically calculated and collected to be remitted to the state on your behalf. Poshmark takes care of all this and more without you having to pay anything above the stated commissions.  If your earnings come to $1000, it means you will receive $800. If you earn $5000, you will receive $4000, Poshmark will keep $1000, and so on.