If this bill received before finalisation of books then you can consider ot expenses for that year.
You can debit the expenses a/c and Credited to party's persnal a/c If that bill has beeln received after finalisation of Books the entry will be Outstanding Expenses A/c Dr to Bank
For out Standing Expenses there must be a provision in last years book which can be done as Expenses a/c Dr to Outstanding Expenses.
If there are no provision and your books has been finalized then this expenses can be book in this year and in P/L A/c that should be shown below the line