You and your manager
How to tell your boss you made a mistake
“I made a mistake on the figures I sent yesterday. Here’s what happened, what I’ve corrected, and what I’ll do differently.”
Say it early, in one breath, and bring the fix with you. It tells your manager three things at once: you saw it before they did, it is already being put right, and it will not happen the same way again.
What is happening
Something went wrong and it was your doing. Hoping nobody notices rarely works, and the longer you wait, the bigger it gets. Telling them early, with what you are already doing about it, is what earns trust.
The line above does that work for you. It names the mistake plainly, it skips the long apology, and it moves straight to what has been done. Change “the figures I sent yesterday” to whatever went wrong, and keep the rest of the shape.
If they push back
Your manager may want to know how it happened before they hear the fix. They might say:
“How did this get missed?”
Answer the question, once, and come back to what you have changed:
“That’s a fair question. I checked the totals and missed the source data, and I’ve added that check now.”
The part this page cannot settle
There are two other ways to say this, one softer and one firmer. Which one fits depends on who you are telling, how much the mistake has cost, and whether you need a decision from them to finish putting it right. Choosing well is most of the work.
The Complete Lines has all three for this moment and for every other one, sorted by what is happening to you. If you have a meeting about it coming up, the first page helps you work out what to say before you walk in, and it is free.