To be counted as a 2014 business expense for P&L calculations does it need to be paid in 2014 or is having a 2014 invoice from the supplier sufficient and it can be paid in January 2015?
Purchases which have been invoiced but not paid in that year are still counted in the invoiced years P&L
There is a provision for accruals in the P&L where work was done during the year, such as accountants fees and the invoice is not received until the following year