“I don't know”: how to say it politely
Why it can fall flat
“I don't know”
When someone asks for a status, a date or a fact you lack, “I don't know” can sound like you've stopped trying or don't care what happens next. Usually you mean you don't have it yet and here is how you'll get it.
Say this instead
- 01
Good question. I'm checking with finance and will get back to you by 3pm with a firm number.
Boss · Chat
Good when the answer exists and you can get it soon, since the deadline shows you're on it.
- 02
No update yet. The vendor hasn't replied, so nothing is confirmed. I'll chase them and message you by 2pm either way.
Boss · SMS
Fits a status check when you're waiting on someone else because it names what's missing and when you'll report back.
- 03
I'll confirm the delivery date with our logistics team today and email you the exact date by Thursday noon.
Client · Email
Right when a client needs a firm answer, since you own the follow-up instead of sending them elsewhere.
- 04
Here's what I can see: your order shipped on Monday. The arrival time isn't showing yet, so I'll check the tracking again at 4pm and message you.
Customer · Chat
Customers hear the part you do know first, then what's missing and when you'll look again.
- 05
Hi Brenda, I'm not sure how refund approvals work. I'll ask Dan in finance operations and send you what I find by end of day.
Coworker · Email
Useful when a colleague needs help and you can name the person who will have the answer.
- 06
Not sure off the top of my head. I'm checking the contract now and will text you in 10 minutes.
Coworker · SMS
Suits a quick question you can look up right away, and it sets a short, clear wait.
- 07
I'm not sure yet when I can start, so I can't give you a date right now. I'll confirm once I've checked my notice period, by Friday.
Recruiter / HR · Email
Recruiters stay informed and you avoid guessing at a date you may have to change.
- 08
I haven't come across this before. Send me what you've found so far and we'll work out the answer together this afternoon.
Someone you manage · Chat
Helps when someone you manage asks something you can't answer, because it keeps them moving and shows you'll help.
Examples
Hi Varsha, Thanks for asking about the installation date. I'm confirming it with our scheduling lead, Suresh, today, and I'll email you the date by 5pm tomorrow. If anything changes before then, I'll let you know straight away. Best regards, Farah
Good question, I haven't seen the latest numbers. Give me 20 minutes to pull the report and I'll post the answer here.
What to avoid
- Leaving it at a bare “I don't know” with no next step or time makes you sound stuck.
- Guessing to fill the silence is risky, since a wrong answer costs more than a short wait.
- Promising a time you can't keep hurts you later, so pick a deadline you're sure of.
- Sending a client or customer to another team without saying you'll follow up yourself leaves them on their own.