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Checkout turns a cart into an invoice. SellAuth hosts the page, applies your fee and tax rules, passes the buyer to the payment method they selected, and delivers once the payment clears.

How buyers get there

All four routes land on the same hosted checkout page, at a URL like https://yourshop.mysellauth.com/checkout/98b3f45d848c5-0000000000003. Buyers can return to that link later, which matters for methods that are not paid instantly.
The checkout link is also the delivery page. Once the invoice completes, that same URL shows the delivered items: license keys, account details, instructions and download links. Anyone holding the link can see them, without logging in.Treat it like a receipt with the goods attached. Tell buyers not to post it in public, and do not paste a buyer’s checkout link into a shared support channel or a screenshot.

What the buyer does

1

Enters an email address

Delivery and the receipt are sent here. Typos in this field are a common cause of support tickets.
2

Fills in anything you require

Billing address, coupon code, terms agreement, custom product fields.
3

Picks a payment method

Methods whose minimum or maximum amount does not fit the order total are shown but cannot be selected, with the reason on hover.
4

Pays

Card processors open their own payment form or redirect the buyer. Crypto shows an address and an amount to send. Wallets and custom methods show instructions instead, and the buyer sends the money themselves.
5

Gets the goods

Once the payment is confirmed, serials, files and dynamic products are delivered automatically and the invoice completes. Service and physical products wait for you to fulfill them.

Configuring the page

All of these live in your shop settings, linked per section below.

Checkout

The last two settings add the consent step some distance-selling rules describe for digital content: the buyer asks for immediate delivery and acknowledges what that means for a right of withdrawal. Whether your shop needs them is for you and your advisor to decide. The consent text links to your Right of Withdrawal page once it is live.

Completed page

Once an order is paid, each delivered item expands to show up to four blocks: Instructions, Downloadable Files, Deliverables and the Thank You Message. A block with nothing in it is skipped, so a product that only has instructions still shows a single clean block. Under Block Order in checkout settings, drag the four into the order you want. It applies to every product in the shop. The usual reason to change it is putting the keys or serials first, so a returning buyer who already knows how to redeem them does not have to scroll past your instructions every time.

Invoices and tax

Enabling both Stripe’s automatic tax collection and SellAuth tax calculation charges buyers tax twice. Use one or the other.
Terms of Service, Privacy Policy, Refund Policy and the other legal page types are edited under Legal Pages, and every published page is linked from the checkout footer. See Legal Pages.

Fees, discounts and totals

Each payment method can add a percentage fee, a fixed fee, or a discount on either. The adjustment applies to the order total and is shown to the buyer before they pay, which makes it a practical way to steer buyers toward the methods that cost you least. See shared method settings.

Invoice statuses

Every checkout produces an invoice, and its status shows where both the payment and the delivery stand. The dashboard, the invoice PDF and the API all call this record an invoice. You will also see it called an order in places, including the emails buyers receive. They are the same thing. Invoices you complete by hand are labelled Manually Completed or Manually Partially Completed, which keeps them distinguishable from payments confirmed by a processor. Within an invoice, each payment attempt has its own status of Pending, Completed or Failed. A buyer who fails twice before succeeding leaves three attempts against one completed invoice.

Next steps

Supported payment methods

Everything you can put on the checkout page.

Refunds

Reversing an invoice and handling chargebacks.