What is an aging bucket in accounts receivable?

Aging buckets are the columns on an AR aging report. Every outstanding invoice falls into exactly one bucket based on how many days it has been past its due date. The current bucket holds invoices not yet due. Each column to the right holds invoices that have been ignored longer. The further right a balance sits, the harder it is to collect.

The distribution across buckets tells you more than the total AR balance does. A business with $200k in AR where $180k is current is in a fundamentally different position from one where $140k is in the 90-day-plus bucket. Watching the bucket distribution monthly is a better early-warning system than watching the total AR number.

Different follow-up strategies apply to each bucket in practice. The 1–30 day bucket is where polite reminders and a single call resolve most issues. The 61–90 day bucket is where payment-plan conversations begin. The 120-day-plus bucket is where most businesses decide whether to escalate to an agency or write the balance off.