With any eCommerce platform you create and modify your own tax rates and tax rules inside the eCommerce admin. You also create your own tax rates and rules inside the Point of Sale.
Lightspeed Retail does not allow Hyperspace to sync taxes from one system to the other. That is prohibited by Lightspeed. Hyperspace downloads the entire sale to Lightspeed Retail and Lightspeed uses its own tax rules to apply taxes to the sale. It examines the line items on the sale and the region and calculates the tax.
For clients that do not have a tax rate setup to perfectly match the tax totals created by the eCommerce sale, there is a solution in place to address that.
Hyperspace looks for a matching tax rate to use when importing the order into Lightspeed Retail. It attempts to find a tax rate that already exists in Lightspeed Retail that will make the perfect calculation to ensure taxes come in at the perfect amount.
If Hyperspace cannot locate this tax rate in Lightspeed Retail, it will create the tax rate in Lightspeed and then import the sale into Lightspeed Retail using that tax rate. This is how Hyperspace always ensures that the tax total generated by the sale in your eCommerce platform downloads into Lightspeed Retail with the correct tax total every time.