---
articleType: Reference
categories:
- Products
- Payments
last_updated: '2026-04-16'
primaryTopic: product-tax-classification
relatedModules:
- name: catalog-product-all
  route: /admin/products/all
- name: products-list
  route: /admin/dashboard/products/all/
- name: catalog-product-discover
  route: /admin/products
- name: samples-order
  route: /admin/dashboard/contributions/orders/samples/order
- name: catalog-product-favorites
  route: /admin/products/favorites
shortDescription: Learn why selecting the correct product category is important for
  accurate sales tax and VAT calculations, and how to assign categories on desktop and mobile.
tags:
- product-category
- sales-tax
- vat
- tax-classification
- product-compliance
- creator-sourced-products
- product-setup
- international-sales
- mobile-app
- eu-vat
tasks:
- select product category
- assign product category on mobile
- ensure accurate sales tax
- classify product for tax compliance
- set up product category for self-fulfilled products
terms:
- product category
- sales tax
- VAT
- tax classification
- tax compliance
- creator sourced products
- e-commerce tax
- international sales tax
- product setup
- tax code
- EU VAT
- Avalara
- HS code
- mobile app product category
labels:
- product-category
- sales-tax
- vat
- tax-classification
- product-classification
- mobile-app
contextString: Available on all Fourthwall plans. Applies to creators with products in their catalog.
breadcrumbPath: "Create and sell products > How to Guides"
title: Why you need to select a product category
path: create-and-sell-products/how-to-guides/product-category-selection
---

# Why you need to select a product category

When you create or edit a product, selecting a product category is required. Fourthwall uses this category to calculate the correct sales tax or VAT for each order. Different product types are taxed at different rates, and the right category ensures supporters are charged the correct amount at checkout.

Product category selection is required for all products, including self-fulfilled products. For on-demand products sourced from the Fourthwall catalog, the category is pre-assigned, but you can update it if needed.

## How product categories work

Each category represents a general type of product (for example, Apparel, Electronics, or Home Goods). Many categories include subcategories for more specific classification. For example, "Apparel" may contain options like "Tops" or "Accessories."

Fourthwall maps each category to an Avalara tax code, which determines the tax rate applied in the supporter's region. If you don't find an exact match for your product, select the category that best represents it. A broadly correct category is better than leaving it unset.

## Why product category selection matters

Tax laws require products to be classified correctly so the right tax rate applies. Selecting the correct category ensures:

- Accurate sales tax and VAT calculations for your supporters.
- Compliance with tax regulations across different countries and regions.
- Fewer issues with tax authorities in regions where Fourthwall collects and remits tax on your behalf.

Fourthwall calculates VAT for all 27 EU countries. At checkout, supporters see tax labeled by their location: "VAT" for EU buyers, "Sales tax" for US buyers, and "Taxes/VAT" for all others. Correct product categorization is what makes these calculations accurate.

## How to select a product category

To assign or update a product category in the desktop dashboard:

1. Open any product from your [**Products**](https://my-shop.fourthwall.com/admin/dashboard/products/all/?redirect) list.
2. Find the **Product category** dropdown on the product details page.
3. Browse or search for the category that best describes your product.
4. If a more specific subcategory is available, select it for the most accurate tax classification.
5. If no exact match exists, choose the closest available option.
6. Save the product.

You can also assign product categories in the Fourthwall mobile app. Open any product, tap the **Product category** field, and select the appropriate category. After saving, Fourthwall applies the correct sales tax or VAT rate to supporter orders at checkout. No further action is required.

## Frequently asked questions

### Do I need to select a category for on-demand products?

On-demand products sourced from the Fourthwall catalog have a pre-assigned category. You can update it if you believe a different category is more accurate, but it is not required.

### What if I can't find a category that matches my product?

Select the closest available category. If none of the options is a reasonable match, contact Fourthwall support for help with the correct classification. Using an incorrect category intentionally to reduce tax charges is not permitted.

### Can I assign product categories on the mobile app?

Yes. Open the product in the Fourthwall mobile app, tap the **Product category** field, and choose the appropriate category. The mobile app supports the same category list as the desktop dashboard.

### Why are my supporters seeing different tax labels at checkout?

Fourthwall displays tax based on the supporter's location. EU supporters see "VAT," US supporters see "Sales tax," and supporters in other regions see "Taxes/VAT." This labeling is automatic and based on the supporter's billing or shipping address.