Vat on sale

Dear Experts we need a help on tax on sale of goods. We have our head office in one city and we have a branch office in other city too of two different states. we have sold goods to our clients over which we have charged tax. That goods which we have sold had received from head office as branch transfer. Now i want to know that do we need to deposit all tax which we have charged on Bills(Tax Invoice) or there would be any Input Tax which would be deducted from Output Tax after that we should deposit remaining excess tax amount? Plz answer as it is expected from you. Thanks in advance..