Sorry, I forgot to mention that the client wants the invoice total to match the quote exactly, including the cents!

Thank you Bryan,The number is a quantity on an invoice and the client wants to enter the quantity as 13.33333, but have that display on the printed invoice as 1...

I have looked for this setting, but don't have a Number format, only Currency format. Hoping someone can help?

Thank you for your reply, but I'm not having the issue that you've given an answer for.I can email and upload receipts and see them in the Receipts tab. No prob...