How to reply to a client asking why you missed a deadline
Updated November 12, 2026
Reply right away, even if the work is not finished. Say you missed the date, give the reason in one plain sentence, and commit to a new date you can really meet. Then say what the client can do in the meantime. Clients forgive a late deliverable much more easily than silence or a vague answer.
- Reply
- Right away, same day. The client is waiting and probably worried about their own plans. Every hour of silence after a miss makes it look worse.
What your reply should say
- Say plainly that the deadline was missed, without waiting for them to point it out.
- Give a short, honest reason, and no more than one sentence of it.
- Commit to a new date you are sure you can keep, and say what is ready now.
- Offer a call if the delay hurts their plans, and tell them when you will update them next.
3 replies you can copy
Pick the one that matches what you want to say, copy it, and change everything in [brackets].
1Own it, new date
You can deliver soon and just need a clear new date.
Hi [Name], You are right. I missed the [date] deadline for [deliverable], and I am sorry. The cause was [one-sentence reason]. I have set aside time and I will deliver by [new date and time]. I will email you the moment it is sent. If that date causes a problem on your side, please tell me and I will adjust my plan. Best, [Your name]
2Deliver in parts
Part of the work is ready, and they can use that now.
Hi [Name], I am sorry that I did not meet the [date] deadline. Here is where things stand. Attached is [finished part], which you can use now. The rest, [remaining part], will follow by [date]. If the other part is more urgent for you, tell me and I will do that first. Best, [Your name]
3Explain a bigger delay
The delay is more than a few days and the client needs to replan.
Hi [Name], I owe you a straight update. The [project] will not be ready by [date]. It will be ready by [new date]. The reason is [reason]. I should have told you sooner, and I am sorry for that. I would like to call you today at [time] to talk through what this means for your plans and what I can do to help. Best, [Your name]
Already late? Send this instead
For when you are a few days past the date late or more. Own the delay in one line, then do the job.
Hi [Name], I am sorry that I have not been in touch about [deliverable]. It was due on [date], and I should have written the day I knew it would be late. The work will be with you by [new date]. Here is what is done so far: [progress]. I will check in on [day] either way. Let me know if you would like to talk. [Your name]
Mistakes to avoid
- Making up an excuse or blaming someone else when the miss is yours.
- Giving a new date you are not sure about. A second miss costs far more trust.
- Writing a long apology and burying the new date in the third paragraph.
- Waiting to reply until the work is finished.
- Sending the work with no mention that it is late.
Questions people ask
Should I offer a discount for a missed deadline?
Only if the delay really cost them something, or your agreement says so. A discount offered too fast can look like guilt rather than a plan. Start with a clear new date and an apology, and see how they react. Check your contract for any penalty terms.
How much of the reason should I give?
One honest sentence is enough. Clients want to know it was not carelessness, but a long story sounds like excuses. Do not share private health or family details unless you want to. Focus on what you will deliver and when.
More reply guides
How this page was made
Written by Westward, who make Orbit, as starting points you edit before sending. The replies use placeholders, not real people or real mail. Nothing here is legal, tax or medical advice; for contracts, money or health, check the document or ask a professional. All reply guides.