For freelance projects, I will give you a quote before starting on any project, and send you an invoice upon completion of the project. Generally my invoices are due 30 days from receipt, though for large projects I’ll ask for half the payment upfront.
I can accept credit card payments through PayPal, though PayPal tacks on a 3.99% fee for that service, which I will add to your bill if you choose to pay that way. If you would like to pay directly from your bank account, I accept payment through PayPal or Dwolla.
Additionally, I accept payment in Bitcoins (BTC; a digital currency system) at the given rate (for individual projects on the Freelance work page). Let me know you’d like to pay with Bitcoins and I’ll provide an address for you to send the coins to.