I'm writting a time tracking software, which will enable people to record time spent on a given task and then generate a sales invoice based on the billable hours.
I'm aware that there's a different sales %tax rate% for each US state, but I wonder how this should apperas on a sales invoice
My questions
1/ If I'm a Californian based company which issue a sales invoice to a Massachussets based company, does sales tax should be calculated for the invoice ? If sales tax should appears which rate should I put on the sales line (The MA or CA rate?)2/ Imagine I've got a sales invoice which contains those 3 lines :
(The quantity are hours of work, and the description are services)
____________________________________________________________ __
Qty Description Unit Price Amount Amount inc Tax
8 Programming 100 800 ??? 1 Support Call 100 100 ??? 1 Design Spec 100 100 ??? ____________________________________________________________ TOTAL 1000 &nb sp; &nb sp;2.a : Should I add the tax rate on each line to work out the Amount Inc TAX per sales invoice line or should I only add it to the $1000 TOTAL ?
2.b : Could you take my example and calculate the tax on this simple invoice ?3/ Does any other kind of tax should appears on a sales invoice ? governmental ? federal ? provincial (for Canada) ??
Well I just hope calculating sales tax for North America (USA & Canada) is not a too complex process
Thank you in advance for your help