If books r not closed:
1. Make provision for whole amount on 1/8/14 and treat the charges from 1/4/15 to 1/8/15 as prepaid exps which can be expensed in 15-16 (even though bill is received in subsequent year, yet services were availed during last year itself and bill can be kept as evidence in support of provision) OR
2. Consider charges from 1/8/14 to 31/3/15 as provision for AMC in 14-15 and account the remaining in next year on the date of bill
If books r closed:
1. Treat the charges from 1/8/14 to 31/3/15 as prior period exps and account the charges for remaining period on the date of invoice.
Hope i have not missed anything.