To help your clients pay you by using their credit card, you need to have a PayPal, PayPal PayFlow, Authorize.net, Stripe or Payoneer account.
To set it up you need to click on your profile picture (bottom left corner) → Company settings → Project accounting → Online payment gateways and set up your credentials.
After the setup is completed, make sure to check the option Accept online payments when creating an invoice.
NOTE: Please be aware commissions will apply, they might vary from country to country:
- PayPal: 2.9% + $0.30/transaction
- Stripe: 2.9% + $0.30/transaction
- Authorize.net: 2.9% + $0.30/transaction
- Payoneer: 3%