Upwork

You can join Upwork for free, create a profile, and offer your services. If you’re a new freelancer or working in a new industry, you can gain significant experience without constantly pitching clients.

Upwork service fee is based on your earnings with each client. Here’s how it works: 

• $0-$500 in earnings from a client: 20% service fee applied to earnings
• $500.01-$10,000 in earnings from a client: 10% service fee
• $10,000.01 or more in earnings from a client: 5% service fee

Example: On a $600 project with a new client, your freelancer service fee would be 20% on the first $500 and 10% on the remaining $100. Your earnings after fees would be $490.

Read more here.