Income tax taxation of aop and boi

Dear Sir,

I am filing ITR 5 for unregistered Trust(U/s 12A), As per financials my Excess of Income over Expenditure is Rs 19,907.00.

Tax calculation on above comes to Rs 6000 (roughly)(as calculated by excel utility).

But what i think is that Tax liability should come to NIL, as it is below Rs 2.5 Lakh.

I am filing the return in excel utility.

Please suggest the required changes to be made.