delivery deadline; due date for payment
Refers to the deadline by which goods must be delivered or payment must be made. Used in business, logistics, and financial contexts.
The delivery deadline is next Friday.
納期までに支払いをお願いします。
Please make the payment by the due date.
Meeting the delivery deadline is important for maintaining trust with clients.
If we speed up the work, we should still make the delivery deadline.
The deadline is approaching, so everyone is working overtime.
Since the materials hadn't arrived, we got the delivery deadline extended.
We ended up missing the delivery deadline due to a parts shortage.
期限 is a broad term for any time limit or expiration date, whereas 納期 is used specifically for delivery or payment deadlines in business.
期日 is a fixed date by which something must be done, a slightly more formal/legal term than 納期 but usable more broadly beyond delivery or payment.
Compound of 納 (のう, 'supply, deliver, pay') and 期 (き, 'period, time'). The combination straightforwardly means 'delivery/payment period'.