The USA has a sales tax which is applied at the point of sale, in states which have a sales tax. During the Democratic Party primaries, one of the candidates, Andrew Yang, proposed moving to a Value Added Tax (VAT), which his platform claims to be in place in 160 countries.
It terms of process, it seems that with a VAT, companies must charge the end tax even when selling to other companies, but only pay the tax collection agency the difference in what was collected and what was owed. With a sale tax, it seems that companies do not collect any tax when selling to other companies
Hence, what is the difference between a sales tax and a VAT in terms of the amount of taxes collected? It seems that in both cases, the taxes are only applied to the end consumer.