Set up location-based tax rates
Many countries charge taxes based on an order's destination, which means that you charge sales tax at the rate defined in the region where your product is delivered. If you're not sure about these details, then consult with a tax expert.
Before you set up taxes based on destination, verify whether you are obligated to charge sales taxes to your customers, and whether your product is taxable.
In the Tax regions section, click the name of the country.
In the Base taxes section, enter the rates that apply in the country and any regions. You can choose whether a tax in a region is used instead of a federal tax, or is added to or compounded with a federal tax. For more information on these options, refer to Make sure that taxes aren't duplicated.
In some countries, such as the United Kingdom, you need to include sales tax in the displayed prices for most types of merchandise.
After you have set up your prices to include taxes, leave Charge tax on this product checked on your product pages so that the taxes are included in the displayed price. Customers will see the included amount of tax beside the total at the checkout.
Setting up your prices to include taxes does not affect your tax reporting.
did you set up like this
The store is already in use and running as "tax excluded" for a long time.
The prices are setup without tax at the moment. Shopfy ads the tax during checkout.
Now I have to change the store to "tax included". Activating that checkbox, does NOT update the prices. It just changes the tax calcualtion at checkout. That's not enough, because then the prices are too cheap.
The prices need to be bulk updated by the tax percentage.
Send your store URL !