Foodomaa doesn’t file or remit your sales taxes for you. You might need to register your business with your local or federal tax authority to handle your sales tax. The calculations and reports that Shopify provides should help make things easier when it’s time to file and pay your taxes.
You should always check with a local tax authority or a tax accountant to make sure that you charge your customers the correct sales tax rates, and to make sure you file and remit the taxes correctly.
Goto Admin Dashboard > Stores > Stores > Edit any Store > General > "Store Charge Tax Percentage"
Here, you can specify the tax that is calculated on the store charges.