Invoice publishing times typically average between 5-10 minutes.
You will see a small logo of your accounting software's name on the publish icon once it has reached it. For example, this is what you will see when an invoice has successfully reached Xero:
If you notice that publishing is taking longer than 5-10 minutes, please click here for the most common reasons why your invoices would be stuck.
Please note that publishing delays can be caused by issues specific to the accounting software that you are using: