To sign up for a business account with Plastiq, visit plastiq.com/accept and reach out to us. We'll request some basic information on your business, and if approved, will send you a custom URL specific to you. Using this URL, you can register for your business account (also known as a Quick Link).
Once you've finished registration, all you need to do is share your Quick Link with your customers as a payment option to pay your business with their credit card.
Here is a bit more detail around how Plastiq works:
You sign up for a business account (takes a few minutes).
You're provided a custom Pay Now button that you can put on your website (see bluth.biz for an example) and a custom URL (like http://bluth.plastiq.com, for example) that you can put in statements/invoices.
Your customers simply visit this site and submit payments on their cards. They're charged a 2.5% service fee for credit card, 1% for debit.
You receive payment notifications and reporting through our Business Portal that we provide to you.
The payment is deposited directly into your bank account. There's absolutely no cost for you as the business to accept payments with Plastiq.
Additionally, here is a video of the payment experience: https://www.youtube.com/watch?v=j0sG_dhTgSo