Hi caitlin10!
Welcome to the QuickBooks Community! I'll provide information about how revenue is posted in QuickBooks so you'll be guided with your process.
Revenue posting is based on the invoice date or its payment date, depending on your accounting method. Therefore, we're unable to spread the revenue in your case since you only invoice on the completion date. You may consult an accountant about the principles behind revenue posting.
You can only spread the revenue when you invoice and receive payment on a monthly basis throughout the project period.
On the other hand, we have helpful articles for QBO International accounts should you need them in the future.
Let me know if you have other questions about projects or anything related to it. Take care and have a good one!
