How do you invoice a consulting engagement, fixed-price or T&M?
For a fixed-price engagement, create a quote, get it signed, then issue a deposit invoice at the start and a balance invoice on delivery. For a time-and-materials engagement, invoice at regular intervals (monthly) with the detail of man-days. Re-billable expenses — travel, accommodation, subcontracting — are added as separate lines with their own VAT rate. If the engagement spans several months, recurring invoicing sends the invoice each month automatically. All documents feed a compliant FEC export your accountant imports directly, reducing accounting fees and making your close more reliable.