1) the date of acquisition of the rights would depend upon facts of each case and the documents executed / provided by the developer to the intended buyers. In case of initial advance if there is no commitment or allotment by the developer, same may not amount of acquisition of rights in the property. Property rights may generally be acquired by the intended buyer only when an allotment letter specifying the project etc. has been issued. -
2) in your case you were allotted property in 2008
3) even if sale deed has been executed in 2014 on sale of property in 2015 you would be assessed to long term capital gains tax
4) High Court in the case of CIT v. Ved Parkash and Sons (HUF) (1994) 207 ITR 148 and Circular No. 471, dated October 15, 1986 (1986) 162 ITR (St.) 41, held that the allottee gets title to the property with the issuance of allotment letter and payment of instalments is only a follow up action and taking of the delivery of possession is only a formality and no right as such accrues