We brought a flat in hyderabad for 58 lacs. Builder gave us two agreement - Sales deed (on circle rate @30 Lacs) + construction agreement (28 Lacs). Builder initially claimed that while registering we will have to pay stamp duty (6%) and tax (ST@3.625% +VAT @1.25%) on sales deed value only. But now builder says we have to pay service tax (5.8%)and VAT (5%)on construction agreement as well. But nowhere in construction agreement they have mentioned about the tax to be paid. Construction agreement says that - "Second Party(us) intends to get his semi-finished Flat completed through the First Party(builder), requested the first Party to complete the Apartment by providing finishing and completion works and the First party agreed to do the finishing works to the semi-finished Flat ". Are we liable to pay tax on this agreement or is it the builders responsibility?