So stupid and careless!

[sobloodystupid]

I have made an error at work which could have cost the company money and benefitted me (it was do with my expenses) The money involved is small, tens of pounds but I was really careless in recording this(didn't clock km just guestimated).Work picked up on this and have sent me the accurate information by email. I want to apologise by email but am struggling with wording. Have had other difficulties with work (not of my making this time) and would like to smooth the waters so to speak.
Please help.I'm stressing majorly

Have namechanged as am so embarrassed about this. (Usually I am the first to tut at someone fiddling company expenses)

Speaking to someone is usually better than emailing.

Does your line manager know? I assume so, as he/she probably signs off your expenses. You should have a chat with him/her about it.

In future do what I do with mileage. Put in your journey to the routeplanner on the AA website, it will tell you the mileage.

thanks flowery. Yes line manager does know, and also his manager (eek!). I've rung my manager to apologise and will ring the boss tomorrow. (I was trying to weasel out by email, I admit!)

Could you not just tell them you are sorry, you made an error and only estimated the mileage instead of recording it accurately door-to-door, and in future you will ensure that the mileage is absolutely correct by using Multimap to pinpoint the mileage to the exact mile.

This acknowledges you made a mistake, apologises, takes responsibility and shows a plan of action to ensure it won't happen again.

I would speak to your line manager but also would consider sending a response by email seeing as they wrote to you by email to advise you of the error, then your response is on record too.

Deep breath and pick up the phone time I'm afraid. It'll be over quicker that way too, if you e-mail you'll be waiting for a response plus you can't tell tone so yuo will take it the worng way.

For that amount (and assuming all your rest will be correct) surely the automatic assumption is that it's a genuine mistake?