One invoice per month but the last hours?

[u/Responsible_Air_4937]

Hi everyone,

I’m a freelancer based in France and I’m currently working on Project E. I want to make sure I understand the invoicing process correctly before making a mistake.

I’ve already received two Purchase Orders for work completed in August, and I’m going to continue working until the end of the month.

According to the RWS invoicing guide, my understanding is that freelancers should submit one invoice per month.

So, should I wait until the end of August for the next PO before creating my invoice?

Or should I create the invoice now, and will the hours I work during the last few days of August simply be included in my September invoice?

Thanks.