---
title: "Checkout"
slug: "events-object-checkout"
updated: 2026-01-29T20:49:47Z
published: 2026-01-29T20:49:47Z
canonical: "docs.blackthorn.io/events-object-checkout"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.blackthorn.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Checkout

Limitation

Do not use the Virtual Terminal to process a Transaction that includes Fees (Payment Processing or Tax). Fees are not supported by the Virtual Terminal.

## Layout

Event Organizers can now display relevant tax information, including the payment processing fee and tax IDs, to their Attendees during checkout. The checkout process performs the tax/fee calculations while creating the Invoice and Line Items and determines whether an Event Item is tax-exempt.

The Fee’s currency and format (symbol vs ISO) will match the Event’s **Currency** and the Event Settings' **Currency Display**. Event Organizers can also change the **Fee Name** to match their requirements (Tax, GST, HST, etc.).

The format for the displayed tax is as follows:

```
[Fee Name] ([Percent value]%)    [Currency symbol/ISO][Amount]
Sales Tax (4%) 		        	$1.09
```

## Order of Calculations

1. Calculate the **Gross Amount**.
2. Calculate the **Net Amount** by applying the **Discount** to the **Gross Amount** for discountable Line Items.
3. Calculate the taxes by multiplying the **Net Amount** by the applicable tax rate.
4. Calculate the **Total Amount** by adding the **Net Amount** and **Tax Amount**.
5. Add any Fees.

The **Tax Fee** will be calculated at checkout after discounts are applied but before a **Payment Processing Fee** is applied. If the Attendee changes the items in their cart, the **Tax Fee** amount will dynamically update. If an Event doesn’t have a **Tax Fee**, there will be no line item at checkout.

Event Items that are not tax-exempt will show a tax amount.

- If the **Tax Display Setting** = “Tax Inclusive pricing,” THEN discounts are calculated after taxes are added since the shown price already includes taxes.
- If the **Tax Display Setting** = “Calculated at checkout,” THEN discounts are calculated before taxes are added since the tax is shown as a separate item at the checkout.

Waitlisted Event Items

The Fee/tax calculation logic applies taxes and/or fees only to available Event Items during checkout.

For example, waitlisted Event Items are excluded from the Fee/tax calculations when an available Product (Event Item **Type** = “Other”) is included.

The fee/tax for a waitlisted Event Item will be calculated when/if the Event Item becomes available for purchase.

## Scenarios

### Event Item

When an Attendee registers for an Event with an Event Item, they will see the tax **Fee Name** and associated amount, including the **Tax Amount**, in the cart at checkout.

The functionality has been updated so the Event Items will display prices based on the Event’s **Tax Fee Calculation Type** value.

- If **Tax Fee Calculation Type** = “Calculated at Checkout,”
  - The **Price** will be visible for each Event Item on the pre-checkout page.
  - A separate line item will show the sum of the **Tax Amount** for each Event Item on the checkout page.
- If **Tax Fee Calculation Type** = “Tax-Inclusive Pricing”,
  - The **Price with Tax** will be visible for each Event Item on the pre-checkout page.
  - The **Price** for each Event Item and a separate line item showing the sum of the **Tax Amount** for each Event Item will be on the checkout page.

When the Event Item’s **Tax-Exempt** field is enabled (checked), the **Tax Amount** will not be added to the total price due at checkout.

When the Event Item’s **Tax-Exempt** field is not enabled, the **Tax Amount** will be added to the total price due at checkout.

### Event Item Session

When an Attendee registers for an Event with an Event Item Session, they will see the tax **Fee Name** and associated amount, including the **Tax Amount** on paid Event Item Sessions, in the cart at checkout.

When the Event Item Session’s **Tax-Exempt** field is enabled (checked), the **Tax Amount** will not be added to the total price due at checkout.

When the Event Item Session’s **Tax-Exempt** field is not enabled, the **Tax Amount** will be added to the total price due at checkout.

### Supported Scenarios

- An Event with one Event Item with a **Tax Rate** and one Event Item with **Tax-Exempt** checked.
- An Event with one Event Item with a **Tax Rate** and one Event Item with **Tax-Exempt** checked and a discount Code applied at the Event level.
- An Event with one Event Item with a **Tax Rate** and one Event Item with **Tax-Exempt** checked and a discount Code applied at the Event Item level.
- An Event with two Event Items with a **Tax Rate** and a discount Code applied at the Event Item level.
- An Event with two Event Items that are subject to a **Tax Rate** and discount Code, but one Event Item has **Tax-Exempt** checked, and the other Event Item does not have a related Code Eligibility.