How do I find a report that totals all invoices raised within a date window please?

Hello Perryfeildsltd, 

Hopefully, one fo these reports will show you want you need to see. You could use the report Invoices and Received Payments Report or Invoice List by Date Report or Open Invoices Report and you can customise these reports to show exactly what you need to see and select ad date range you need to view as well.