✔ 最佳答案
Please be informed that the payment of your invoice shall be arranged (paid) in next month as all the payments of this month had already been settled. Kindly note and thanks.
"or"
Kindly be informed that payment for this (your) invoice shall be arranged in next month since the payment arrangement of this month had been closed. Please note and thanks.
Notes: 如果你今個月一定不能付款的話, 不要問 “可否”,直接禮貌告訴對方下個月才付款吧!