TL;DR

The aging report shows you exactly which clients owe you money and for how long. It's the primary tool for managing collections — the longer a debt ages, the harder it is to collect, so the report tells you where to focus your follow-up efforts.

Key Points

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Standard aging buckets: current (not yet due), 1–30 days past due, 31–60 days, 61–90 days, 90+ days

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Invoices in the 90+ bucket are significantly harder to collect — prioritize the 31–60 range for immediate follow-up

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Run the aging report weekly or bi-weekly to stay on top of [[accounts-receivable]] and trigger [[invoice-reminder|reminders]] promptly

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A high percentage of receivables in the 60+ buckets signals a systemic problem with your payment terms or client selection

How to Read an Aging Report

An accounts aging report lists each client with an outstanding balance, the invoice amount, the invoice date, the due date, and how many days past due the invoice is¹. Invoices are grouped into aging buckets: current (due today or later), 1–30 days past due, 31–60 days, 61–90 days, and 91+ days. At a glance, you can see which clients are consistently late payers, which invoices need immediate follow-up, the total receivables by aging bucket, and the overall health of your Accounts Receivable. The 91+ bucket represents the highest collection risk — studies show the probability of full collection drops significantly after 90 days.

Using the Aging Report to Drive Follow-Up

The aging report is the trigger for your Collections sequence. Each bucket should prompt a different action: current invoices — send a pre-due Invoice Reminder for invoices due within 3 days; 1–30 days past due — send a reminder within 24 hours, phone call at day 14; 31–60 days — send a firm email with your late fee calculation; 61–90 days — send a formal Late Payment Letter; 91+ days — evaluate whether to refer to a collections professional or proceed with small claims. Review the aging report on a fixed schedule (weekly or bi-weekly) and take action on every invoice that moved into a new bucket since your last review.

The Aging Report and Days Sales Outstanding

The aging report provides the raw data; Days Sales Outstanding (DSO) is the derived metric. DSO measures your average collection time in days — a DSO of 45 means it takes an average of 45 days to collect after invoicing. Tracking DSO over time reveals whether your payment terms and collections efforts are working. A rising DSO indicates clients are paying more slowly or your reminders are less effective. A DSO that consistently exceeds your stated payment terms (e.g., DSO of 50 on Net 30 terms) signals that your terms aren't being enforced. Use the aging report and DSO together to identify both the immediate follow-up actions and the structural changes needed to improve cash flow.

References

FreshBooks — Days Sales Outstanding ↗

freshbooks.com

FreshBooks — Automate Your Accounts Receivable ↗

freshbooks.com

Last updated: June 9, 2026

Related Terms

Accounts Receivable

Money owed to a business by its customers for goods or services that have been delivered but not yet paid for.

Invoice Aging

A method of categorizing outstanding invoices by how long they have been unpaid, typically grouped into 0–30, 31–60, 61–90, and 90+ day buckets.

Days Sales Outstanding

A metric measuring the average number of days it takes a business to collect payment after issuing an invoice, used to assess the efficiency of accounts receivable management.

Invoice Reminder

A notification sent to a client before or after an invoice due date to prompt payment, ranging from a friendly pre-due reminder to escalating overdue notices.

Collections

The process of pursuing payment for overdue invoices through escalating means, ranging from reminder notices to third-party collections agencies or legal action.

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