Should Shopify income be considered cash income?

[JohnB5677]

Yes, Based on the definition of Shopify, receipts are taxable.

Shopify is a complete commerce platform that lets you start, grow, and manage a business. The subscription-based software allows anyone to set up an online store and sell their products. Shopify store owners can also sell in physical locations using Shopify POS, our point-of-sale app and accompanying hardware.

Since this represents a business, you can deduct expenses from your earning.

Note:  Selling merchandise (even online) may be subject to state sales tax.