Hello,
Sorry, I though that you were talking about product taxes.
HikaMarket process the vendor total and the store total ; there is no extra party (such as a government).
But that part could be added thanks to a custom plugin, during the vendor payment (when orders are marked as paid).
It create a HikaShop order (with a special type) ; so you can have a log of "transactions".
It is possible to create a plugin, which will trigger when such kind of order is created and add your tax on that order.
So you will have in the HikaShop backend, all the needed details.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.