What is a proforma invoice? Meaning and examples
Pro forma invoices are not a legal document, but it serves an important purpose for a business. Here's what it is and how it differs from an invoice.
Receipt vs invoice – know the difference
Invoices and receipts differ in the fine details and legal uses. We contrast the two documents, describing characteristics and practical purposes.
SumUp Invoices review: surprisingly complete for a free system
SumUp's invoice software is a simple way for freelancers and small companies to bill clients. Does it have all the features you need? Any trade-offs?