Overdue
Also known as: past due · outstanding payment · late payment
Definition
An invoice is overdue when the payment due date has passed and payment has not been received. Overdue invoices are the most common cash flow problem for freelancers.
Detailed Explanation
Overdue invoices are not just an accounting concern — they're a business health indicator. A freelancer with 30%+ of invoices overdue may have a systemic issue: unclear payment terms, clients with cash flow problems, or insufficient follow-up. Best practices for managing overdue invoices: send a friendly reminder 3 days before the due date (many clients simply forget), send a professional follow-up on the due date, escalate to firm language after 7-14 days, and consider stopping work or requiring upfront payment from repeat offenders. AI bookkeeping tools automate the entire reminder sequence — escalating from friendly to professional to urgent over 21 days — so you never have to initiate an awkward payment conversation manually.
Freelancer Example
A freelance illustrator sent an invoice for $900 on May 1 with Net 15 terms (due May 16). It's now May 28 and the client hasn't paid. The invoice is 12 days overdue. The freelancer sends a professional follow-up email and the client pays the next day, apologizing for the oversight.