Which tax for online download software license ?

Hello,

If i am selling software of other company, which tax i should add in billing ?

i.e. I have tied up with a software company. Its product is downloadable from internet and only you have to puchase licenses. So if software license cost is $10. i will get in say $5, now i will sell this software license to customers. Should i add up any tax to it ? if yes which tax will be applied ?

note : i am just selling it and taking my profit, neither software not licenses own by me and its online digital download license.

Thanks & Regards

Hemant