... //a shop with tax rates 5%, 9.5% and 22% mapped to tax classes 3, 2 and 1
{
	"rates": [
		{ "max": 0.0725, "tax_class_id": 3 },
		{ "max": 0.1575, "tax_class_id": 2 },
		{ "max": 1, "tax_class_id": 1 }
	]
}
... //a shop with a single tax rate
{
	"rates": [
		{ "max": 1, "tax_class_id": 1 }
	]
}