https://invoicetools.com/blog/ Invoicing guides for contractors and freelancers: progress billing, deposit invoices, change orders, invoice numbering and how to chase an unpaid invoice. en-us Sun, 30 Aug 2026 09:00:00 GMT https://invoicetools.com/blog/progress-billing/ https://invoicetools.com/blog/progress-billing/ Sun, 30 Aug 2026 09:00:00 GMT How to bill a job in stages: the schedule of values, a worked progress invoice with retainage, pay applications and AIA forms, and the quote wording that gets each stage paid. https://invoicetools.com/blog/unpaid-invoices/ https://invoicetools.com/blog/unpaid-invoices/ Sun, 30 Aug 2026 09:00:00 GMT What to do when a client is not paying: the day-one reminder email, the day-seven call, the overdue notice with the late fee, the final demand letter, then liens, small claims and collections. https://invoicetools.com/blog/change-orders/ https://invoicetools.com/blog/change-orders/ Sun, 30 Aug 2026 09:00:00 GMT When to write a change order, what goes on the form, how to price extra work including time and materials, keeping a log, and how an approved change reaches the invoice. https://invoicetools.com/blog/deposit-invoices/ https://invoicetools.com/blog/deposit-invoices/ Sun, 30 Aug 2026 09:00:00 GMT When to ask for a deposit, how much, deposit versus down payment versus retainer, the wording on the quote and the deposit invoice, and how the final invoice shows the balance due. https://invoicetools.com/blog/invoice-numbers/ https://invoicetools.com/blog/invoice-numbers/ Sun, 30 Aug 2026 09:00:00 GMT An invoice numbering system that never repeats or skips, format examples with a year or job prefix, separate series for quotes and credit notes, and where the number goes on the invoice.