Automated debtor chasing
Also called automated payment reminders, credit control automation, collections automation, AI dunning, accounts receivable automation
Do automated payment reminders get small businesses paid faster? Field-trial evidence, costs, and whether AI-written chasers add anything.
Reminders work and are cheap, though the trials involve tax and loan debts, not trade invoices. In a randomised trial, a simple letter raised the chance that small businesses paid an overdue tax debt by about 25 percentage points, and text reminders improved on-time repayment by small-business borrowers. AI-written wording is unproven: we found no independent evidence it beats a plain, polite template, and one study found extra wording added nothing. UK firms with 10 to 49 staff that are hit by late payment spend 138 hours a year chasing it.
At a glance
| Status | In production |
|---|---|
| What it does | Sends scheduled reminders before and after due dates from your accounting data, escalates overdue accounts, and in newer tools drafts the wording or flags customers likely to pay late. |
| Typical cost | Basic reminders built into some accounting software; specialist credit-control tools from $259 per month (vendor list prices, checked Oct 2026) |
| Data it needs | Open sales invoices with due dates, a named accounts contact and email for every customer, reconciled payments, and payment history by customer. |
| Setup effort | Low for scheduled reminders; Medium for a full credit-control workflow with escalation, call lists and dispute tracking. |
| Evidence | Moderate. Randomised field trials of reminders for tax and loan debts, not trade invoices; UK government surveys on chasing; no independent study of AI-written reminders. |
What is automated debtor chasing?
It is software that follows up unpaid sales invoices for you. At its simplest, your accounting system emails a polite reminder before an invoice falls due, on the due date and at set intervals afterwards. Credit-control tools add escalation steps, call lists, payment links and a log of every promise to pay. The AI layer is newer: some tools now draft the wording of each chaser or score which customers are likely to pay late.
The problem is large. A UK government study estimates late payment costs the economy almost £11 billion a year. Half of small firms with 10 to 49 staff were affected, and those that were spent an average of 138 staff hours a year chasing. Yet only about 4% of businesses surveyed chased invoices before they fell due.
How does it work?
The tool reads open invoices, due dates and customer contacts from your accounting system, then runs a schedule you set.
- Before due: a friendly note with the invoice attached and a payment link.
- On and after due: firmer reminders at set intervals, copying a second contact if needed.
- Escalation: a task for a person to phone, a statement of account, then a formal letter.
- Stop rules: reminders pause when a payment lands, a dispute is logged or a payment plan is agreed.
AI features sit on top. A language model can draft the message, and a risk score can flag customers likely to pay late so you know who to call first. These are optional; the schedule does most of the work.
In the UK, the government plans to put a right to statutory interest at 8% above Bank of England base rate into all commercial contracts, and to cap payment terms at 60 days. That gives later-stage reminders more weight.
What it needs to work
Chasing is only as good as the debtors ledger behind it: every invoice raised in the system, payments reconciled promptly, and the right contact on file.
- Every sales invoice raised in the accounting system with a due date and the agreed payment terms
- Bank reconciliation done at least weekly, so paid invoices drop out before the next reminder goes
- A named accounts-payable contact and email address for each customer, separate from the person who orders
- A way to flag disputed invoices and agreed payment plans that pauses reminders automatically
- At least six months of payment history per customer before relying on risk scores or behaviour-based AI messages
- Written payment terms on quotes and invoices, reviewed against the planned UK rules on maximum terms and statutory interest
Most use cases in this guide succeed or fail here, on the data underneath them, before any AI is involved.
What does the evidence show?
Reminders have good evidence, but the trials involve tax and loan debts, not trade invoices between businesses.
- In an Australian Taxation Office trial covering 4,787 overdue small-business tax debts, a reminder letter raised the probability of payment by about 25 percentage points. Earlier letters brought faster payment, and the effect was concentrated in debts under A$7,500.
- In Uganda, text reminders to small-business borrowers raised the chance of paying every instalment on time by about 9 percentage points, similar to a cash incentive.
- In the Philippines, texts cut loans with an unpaid balance 30 days after maturity from 13.5% to 9.8%, and positive messages naming the bank's account officer did best, but only for repeat borrowers.
AI-written wording itself is unproven. In a field study of voluntary payments, a neutral reminder raised payment, but adding information did not help further and sometimes did worse. One vendor reports that customers who accept online invoice payments get paid up to twice as fast. We found no independent study of AI-drafted reminders on any kind of debt.
Automated chasing vs manual chasing
| Compared on | Automated chasing | Manual chasing |
|---|---|---|
| Timing | Every invoice gets reminders before and after due, on schedule | Chasing happens when someone has time, usually well after due |
| Error profile | Reminders sent on paid or disputed invoices if the ledger is stale | Invoices forgotten; the loudest customers get the attention |
| Cost model | Built into some accounting software; specialist tools from $259 a month | Staff time: 138 hours a year for an affected small UK firm |
| Best for | Many invoices to many customers on standard terms | A handful of large accounts where a personal touch matters |
Status and evidence
Rated production because scheduled reminders run in standard accounting software today and randomised field trials consistently show reminders raise payment rates. Evidence is moderate because those trials cover tax and loan debts, not trade invoices between businesses. The AI-specific features, drafted wording and late-payment scores, have no independent evidence behind them and on their own would rate unproven.
Where does it go wrong?
- Chasing invoices already paid. If bank reconciliation lags, customers who have paid get a reminder. Few things damage goodwill faster.
- Chasing disputed invoices. About a quarter of UK firms blame administrative errors, including invoice mistakes, for late payments they receive. If disputes are not logged, the tool keeps nagging while the real problem sits unresolved.
- Wrong contact. Reminders go to the person who placed the order rather than the accounts inbox, and are ignored.
- Customer approval chains. South African research found client bureaucracy and long chains of invoice approvers slow payment. A reminder cannot fix a missing order number.
- Tone drift. AI-drafted messages can sound generic or oddly aggressive. Approve the templates, then let them run.
- Fear of the relationship. Among UK firms that did not formally pursue late payers, a third said they did not want to damage customer relationships, rising to 44% of micro businesses. Automation helps only if the later steps are allowed to run.
Numbers it should move
Ask the demo business
Northgate Supply is a fictional wholesale distributor of catering and packaging supplies: 28 staff, R46.6m in sales over the last year. Its data is generated for this demo, to 30 September 2026.
Customers took about 42 days to pay at the end of September, up from 32 at the end of January. The biggest slowdowns: Hout Bay Coffee (30 to 60 days), Wheatfield Kitchen (37 to 62 days), Vineyard Catering (21 to 46 days).
How this was worked out
Money owed by customers at month end, divided by the last 91 days of sales, multiplied by 91 (fewer days in the first months, while history builds up).
Where the data usually lives
Where the records this use case needs are usually kept in a small business. It is not a list of recommended tools.
Frequently asked questions
How much does credit control software cost?
Some accounting software already includes scheduled reminders, so check your current plan first. Dedicated credit-control tools cost more: one vendor lists plans from $259 a month for its smallest revenue band, slightly cheaper if billed yearly. Weigh that against staff time: small UK firms affected by late payment spend an average of 138 hours a year chasing.
Do I need a developer to automate invoice reminders?
No. Reminder schedules are set up inside the accounting system or a connected credit-control tool, without code. The work is in the data: correct due dates, a payments contact for every customer, and bank reconciliation kept current so paid invoices stop triggering reminders. A bookkeeper can set it up; you do not need an IT team.
Do automated payment reminders annoy customers?
They annoy customers when they are wrong, not when they are polite and accurate. Field trials show simple reminders raise payment, and in one study a neutral reminder worked as well as or better than one with extra information. Personal touches can matter: naming the bank's account officer improved loan repayment among repeat borrowers in another trial. Keep the tone courteous and stop reminders the moment a payment or dispute is logged.
Can I charge interest on late payments from business customers?
In the UK, the government plans to make a right to statutory interest at 8% above Bank of England base rate part of every commercial contract, and to cap payment terms at 60 days. It will legislate when Parliamentary time allows, so check the current position. In South Africa, researchers recommend that small firms charge interest or fees on late payments. Take legal advice on your contracts.
Are automated payment reminders allowed under POPIA and UK GDPR?
Reminders use personal information, so the rules apply. In the UK, a named contact's work email is personal data, though information about a limited company itself is not. POPIA can also protect information about an existing company, and requires a written contract making any provider that processes the data on your behalf keep it secure. Keep contact lists accurate and minimal. This is not legal advice.
More in cash & finance
Sources
- 1Late Payments Research: Estimating the total economic cost of late payments and their impact on the UK economyLondon Economics for the Department for Business and Trade and the Office of the Small Business Commissioner, 2025Government
- 2Late payments research: understanding variations in payment performance and practices across business sectors and sizes (HTML executive summary)Department for Business and Trade, 2024Government
- 3Late payment consultation: time to pay up - government response (web version)Department for Business and Trade, 2026Government
- 4Nudging Businesses to Pay Their Taxes: Does Timing Matter?IZA Institute of Labor Economics (Discussion Paper No. 11599), 2018Study
- 5Remembering to Pay? Reminders vs. Financial Incentives for Loan PaymentsMIT and ideas42 (working paper), 2011Study
- 6A personal touch in text messaging can improve microloan repaymentBehavioral Science & Policy, 2015Study
- 7Reminders for voluntary payments might backfire: Evidence from a field studyEconomics Letters (Maastricht University research portal), 2018Study
- 8Small businesses getting paid quicker, but still lateXero, 2026Vendor
- 9Chaser PricingChaser, 2026Vendor
- 10Late Invoice Payments and Small Business SustainabilityJournal of Accounting and Finance in Emerging Economies (DOAJ record), 2025Study
- 11What is personal data?Information Commissioner's Office, 2026Government
- 12Protection of Personal Information Act 4 of 2013Government of South Africa, 2013Government
This entry is educational. It is not legal, financial or professional advice, and it does not recommend any vendor. Figures attributed to vendors are their own claims.
- 1Late Payments Research: Estimating the total economic cost of late payments and their impact on the UK economyLondon Economics for the Department for Business and Trade and the Office of the Small Business Commissioner, 2025Government
- 2Late payments research: understanding variations in payment performance and practices across business sectors and sizes (HTML executive summary)Department for Business and Trade, 2024Government
- 3Late payment consultation: time to pay up - government response (web version)Department for Business and Trade, 2026Government
- 4Nudging Businesses to Pay Their Taxes: Does Timing Matter?IZA Institute of Labor Economics (Discussion Paper No. 11599), 2018Study
- 5Remembering to Pay? Reminders vs. Financial Incentives for Loan PaymentsMIT and ideas42 (working paper), 2011Study
- 6A personal touch in text messaging can improve microloan repaymentBehavioral Science & Policy, 2015Study
- 7Reminders for voluntary payments might backfire: Evidence from a field studyEconomics Letters (Maastricht University research portal), 2018Study
- 8Small businesses getting paid quicker, but still lateXero, 2026Vendor
- 9Chaser PricingChaser, 2026Vendor
- 10Late Invoice Payments and Small Business SustainabilityJournal of Accounting and Finance in Emerging Economies (DOAJ record), 2025Study
- 11What is personal data?Information Commissioner's Office, 2026Government
- 12Protection of Personal Information Act 4 of 2013Government of South Africa, 2013Government