As a freelancer, you are responsible for paying your own taxes. This includes any fees you may have paid to platforms like UpWork. When it comes time to file your taxes, you will need to report any fees paid to UpWork as part of your business expenses.
To do this, you will need to login to your UpWork account and download a copy of your 1099-K form. This form will list all the fees you paid to UpWork over the course of the year. You will then need to include this form when you file your taxes.
If you have any questions about how to report UpWork fees on your taxes, you should speak with a tax professional. They will be able to help you ensure that you are correctly reporting all of your income and expenses.