[ornornor]

It’s just the name for sales tax. Why is there a tax on sales, isn’t a sale a discount? Then is the sales tax negative because it’s the tax on the difference between the full price and the discounted price? You’d probably end up with a refund for buying the thing, unless your state has no sales tax.

[abujazar]

Sales tax is actually very different beacuse it is usually either cumulative and added to each part of the chain, or only the last one; whereas VAT is deducted in all but the last part of the chain.