12 February 2011
Your society is a mutual concern. On the concept of mutuality income earned from members is collective income of those members only and as such there is no outside income. A famous maxim in Income Tax is - One can not earn with himself.
The income is itself an exempt income.
U/s 80P deductions is available out of income. In your case, there is no income, so there is no question of availability or claiming for deductions.