AR Aging: How Slow Payers Are Quietly Draining Your Cash Flow (And How to Stop It)

The Slow Payment Problem in Numbers#

UK Federation of Small Businesses data: the average SMB is owed £23,360 in late payments at any given time. Twenty-five percent of businesses say late payment has threatened their survival. Emotionally, chasing payment is the task every owner dreads — it feels confrontational, risks the relationship, and takes time from more rewarding work. So it gets delayed. The invoice sits unpaid for 45 days before anyone follows up. At that point, the customer has had 15 days of free credit beyond terms, and the habit is set.

What an AR Aging Report Shows#

An AR aging report buckets outstanding invoices by how overdue they are: current (within terms), 1–30 days overdue, 31–60 days overdue, 61–90 days overdue, 90+ days overdue. The older the bucket, the lower the collection probability: current invoices collect at 98%+; 90+ day invoices collect at 50–60% on average. Reading the report tells you where to focus collection effort and which customer relationships need a frank conversation. AskBiz generates this report from Xero data daily — not monthly.

Systematic vs Ad Hoc Chasing#

Ad hoc chasing: you remember when cash is tight, fire off an email, get a vague reply, follow up ten days later. Systematic chasing: every invoice gets a reminder sequence — automatic email 3 days before due date, reminder on due date, personal email at 7 days overdue, phone call at 14 days, formal letter before action at 30 days. AskBiz triggers this sequence automatically for every Xero invoice using your email templates. You only get involved at the phone call stage.

Identifying Your Worst Slow Payers#

Not all slow payers are equally problematic. A customer paying 15 days late on £2,000 monthly invoices is a minor irritant — roughly £6.58/month in financing cost. A customer paying 60 days late on £25,000 quarterly invoices is a material cash flow problem — roughly £328/month. AskBiz ranks customers by total overdue value and average days late, giving you the top five to prioritise. Often, a single direct call to a senior contact resolves a systemic late-payment pattern that has accumulated for years.

Early Payment Discounts: The Tool Most Businesses Don't Use#

A 1% discount for payment within 10 days (net 30 terms) costs 1% of that invoice but recovers cash 20 days earlier. If your overdraft costs 8% annually, 20 days' interest on £10,000 is £43.84. The 1% discount is £100. Not economically rational for routine invoices — but for a large invoice where early payment eliminates an overdraft draw or prevents a supplier payment delay, the discount can be rational. AskBiz models the cost-benefit of early payment discounts per invoice based on your current cash position.

• A B2B business with £120,000 in outstanding invoices — 40% over 30 days late — has given its customers a £48,000 interest-free loan.
• At 8% overdraft cost, that's £3,840/year in financing cost for the privilege of being paid late.
• AskBiz connects to Xero to automate AR aging reports and payment chasing — most businesses recover 20–35% of overdue balance in the first month.