The dangerous moment in an interview is not the hostile question you prepared for. It is the factual one you did not: an exact number, a specific date, a detail from a part of the organization you do not run. The pressure to have an answer is real, and the instinct is to produce something. That instinct is what turns a routine story into a correction.
Say you don’t know
Directly. “I don’t have that figure in front of me” or “that’s not something I can speak to accurately right now.” Not a deflection, not a vague gesture at complexity, not an answer to a nearby question you do know. Reporters can tell the difference between “I don’t know” and “I don’t want to say,” and the first is far less interesting to them than the second.
Give the reason
A bare “I don’t know” can read as unprepared. Attach a reason and it reads as careful:
- “That sits with our finance team and I want to give you their exact number, not my estimate.”
- “The final count isn’t confirmed yet, and I don’t want to give you one that changes.”
- “I’d be working from memory on the date, so let me check it against the record.”
Each of these tells the reporter the information exists and is obtainable, which is what they actually want to know.
Commit to a follow-up
Turn the non-answer into a promise: “I’ll get you the confirmed figure by 2pm.” Then ask when they genuinely need it. Reporters state deadlines that are often hours softer than they sound, and “I’d rather be right in an hour than wrong now” is a position most will accept, because they do not want to run a number they have to correct either.
If the interview is live and there is no follow-up window, the honest version is: “I don’t want to guess at that on air. What I can tell you is [the part you know].” That is a clean, defensible answer.
Deliver, early and in writing
Send the answer before the deadline, as an email the reporter can quote verbatim. Two things happen. The story gets the right fact, and the record now shows you responded promptly, which matters if the piece would otherwise have said “the company did not provide the figure by publication.”
Write down what you promised and when. The single worst outcome here is committing to a follow-up and missing it, because the reporter files the story with a line about your non-response, and now your failure to answer is part of the coverage.
What not to do
- Don’t guess and hope. A wrong number on the record is a correction, and corrections attach to your name in search results.
- Don’t bluff with confidence. Sounding sure of a wrong answer is worse than admitting uncertainty, because it makes everything else you said suspect.
- Don’t answer a different question. Pivoting away from “I don’t know” looks like evasion. Just say it.
Frequently asked questions
Is it acceptable to say "I don't know" to a reporter?
Yes. "I don't know, let me find out and come back to you" is a normal, credible answer. Reporters deal with it constantly. What damages you is guessing, because a wrong guess on the record becomes a correction and a credibility problem.
How do I say I don't know without sounding unprepared?
Attach a reason and a next step. "That's outside what I handle directly, but I can get you an accurate answer from the team by end of day" signals that the information exists and you will produce it, rather than that you were caught out.
What if I half-know the answer?
Give the part you are sure of, label the part you are not, and offer to confirm. "I know it's in the single digits of a percent; I don't want to give you a precise figure I'd have to correct, so let me confirm the exact number."
The reporter is pushing for an answer right now. What do I do?
Hold. "I understand you're on deadline, and I'd rather give you something accurate in an hour than something wrong now. When do you actually need it?" Reporters respect this more than a rushed guess, and deadlines are often softer than they sound.
How do I make sure the follow-up doesn't cost me?
Write down exactly what you promised and by when, and deliver early. The fastest way to turn a neutral story hostile is to promise a follow-up and miss the deadline, because now the story includes that you didn't respond.
Want to know which facts you’ll be asked for? Press Prep predicts the specific factual questions a reporter is likely to ask and builds the fact sheet from your documents, so “I don’t know” happens less. See how to correct a reporter’s mistake or the full preparation checklist.