Automate collections and dunning without spamming clients. Discover how accountants chase overdue invoices professionally while maintaining client relationships.
You send a polite reminder about an overdue invoice. Three days later, you send another. A week passes and you draft a third email, trying to sound firm without being rude. The client finally pays, but now you have fifteen other overdue invoices sitting in your system. Chasing payments eats hours every week, and the constant follow-up makes you feel like a debt collector instead of a trusted adviser.
Most accountants know they need a consistent collections process, but manual follow-up does not scale. You cannot send the same message to every client at the same time, and you cannot personalise each reminder without spending your entire afternoon on email. The result is either inconsistent follow-up or messages that feel impersonal and pushy.
This post shows how to automate collections and dunning without spamming clients, so overdue invoices get chased professionally while you focus on advisory work.
Dunning automation sends payment reminders based on rules you set once. When an invoice becomes overdue, the system waits a defined period, then sends a reminder using your tone and templates. If the invoice remains unpaid, it escalates through a sequence: a gentle nudge at seven days, a firmer reminder at fourteen days, a final notice at thirty days.
Each message is personalised with the client’s name, invoice number, amount owing, and payment link. The system tracks which clients have opened emails and clicked links, so you know who has seen the reminder and who needs a phone call. You stay in control of the sequence and can pause automation for specific clients if needed.
This approach removes the manual work of checking your accounting software daily, copying invoice details into emails, and remembering who received what message. It also ensures no overdue invoice sits ignored because you were busy with tax returns or year-end accounts.
Sending the same reminder to every client at the same time feels impersonal. A long-standing client who pays within 35 days every month does not need the same urgent tone as a new client who is 60 days overdue. Generic messages ignore context, and clients notice.
Automation lets you segment clients by payment history, invoice size, or relationship type. A client with a perfect payment record might receive a friendly reminder that assumes good intent: “Just checking this landed in your inbox.” A client with a pattern of late payments gets a more direct message with clear consequences. You can also exclude certain clients from automated sequences entirely, handling their invoices manually if the relationship requires it.
The key is that automation does not mean one-size-fits-all. You design the rules, the tone, and the timing. The system just executes consistently without you needing to remember which client is in which category. For more on how accountants use automation across their practice, see how accountants automate billing and payment chasing.
A well-designed sequence has three to four stages, each with a different tone and level of urgency. The first reminder assumes the client simply forgot or the invoice went to spam. It is short, polite, and includes a direct payment link. Send this seven days after the due date.
The second reminder acknowledges the previous message and adds a bit more urgency. Mention any late fees or interest that will apply if payment is not received soon. Send this at fourteen days overdue. The third message is a final notice before you pause services or hand the debt to a collections agency. It is firm but professional, and it clearly states the next steps. Send this at thirty days overdue.
Each message should include:
Avoid vague language like “just following up” or “checking in.” Be direct. “Invoice 2847 is now 14 days overdue” is clearer than “I wanted to touch base about your account.”
Automation does not mean robotic. You can still sound like yourself by writing templates in your own voice and adding conditional logic that adjusts the message based on client details. Use the client’s first name, reference their specific invoice, and include a sentence that acknowledges your working relationship.
For example, instead of “Your payment is overdue,” write “Hi Sarah, I noticed invoice 2847 for $1,200 is now 7 days overdue. I know things get busy—just wanted to make sure this landed in your inbox. You can pay here [link] or let me know if you need to adjust the payment date.”
You can also add manual touchpoints at key stages. Set the system to notify you when a high-value client reaches 21 days overdue, so you can call them personally before the final automated notice goes out. This hybrid approach gives you the efficiency of automation with the flexibility to intervene when it matters.
For practices looking to automate other parts of their workflow, AI automation for accountants covers client onboarding, document requests, and meeting scheduling.
Some clients need manual handling. A long-term client going through a rough patch, a corporate client with a 60-day payment cycle written into their contract, or a client who has already contacted you to arrange a payment plan—all of these should be excluded from automated reminders.
Most automation tools let you tag clients or set custom rules that pause the sequence. You can also set up a “do not automate” list that overrides the default dunning process. This ensures you are not sending a stern final notice to someone who has already spoken to you about extending their payment terms.
The goal is not to automate every single invoice. It is to automate the 80 per cent of straightforward cases so you have time to handle the 20 per cent that need a conversation. If you are unsure whether your practice is ready for this kind of system, is your business ready for automation walks through the key indicators.
Track three metrics: average days to payment, percentage of invoices paid within terms, and time spent on collections each week. Before automation, most accountants see 40-50 per cent of invoices paid within terms and spend 5-8 hours per week chasing payments. After automation, those numbers shift to 65-75 per cent paid within terms and 1-2 hours per week on collections.
You should also track which stage of your dunning sequence gets the most responses. If most clients pay after the first reminder, your initial message is working. If they wait until the final notice, your early reminders might be too soft or easy to ignore. Adjust the tone and timing based on what the data shows.
Finally, monitor client feedback. If multiple clients mention feeling harassed or say the reminders are too frequent, dial back the sequence. If clients say they appreciate the reminders because they genuinely forgot, you have the balance right. Automation should make collections easier for both sides—not just for you.
How do accountants automate collections and dunning without spamming clients? Accountants use automation tools that send payment reminders based on rules they set, such as 7 days after an invoice becomes overdue, then 14 days, then 30 days. Each message is personalised with the client’s name, invoice details, and payment link. The system tracks which clients have opened emails and clicked links, so accountants know who needs a phone call instead of another automated message. This ensures consistent follow-up without manual effort or sending too many reminders.
Can I exclude certain clients from automated payment reminders? Yes. Most automation systems let you tag clients or create exclusion lists so specific clients never receive automated dunning messages. This is useful for long-term clients with agreed payment terms, clients going through financial difficulty, or anyone who has already contacted you to arrange a payment plan. You stay in full control of who receives automated reminders and who gets manual follow-up.
What should the first payment reminder say to avoid sounding aggressive? The first reminder should assume the client forgot or the invoice went to spam. Keep it short and polite: “Hi [Name], I noticed invoice [number] for $[amount] is now 7 days overdue. I know things get busy—just wanted to make sure this landed in your inbox. You can pay here [link] or let me know if you need to adjust the payment date.” This tone maintains the relationship while making it easy for the client to act.
How long should I wait between each dunning message? A typical sequence sends the first reminder at 7 days overdue, the second at 14 days, and the final notice at 30 days. You can adjust these intervals based on your client base and payment terms. If most of your clients pay within 30 days of the original due date, a 7-14-30 sequence works well. If you work with corporate clients on longer payment cycles, you might start at 14 days and escalate more slowly.
How do I get started with automating collections for my accounting practice? Start by mapping your current collections process: when you send reminders, what you say, and which clients need special handling. Then write three email templates for each stage of your dunning sequence. Choose an automation tool that integrates with your accounting software so invoice data flows automatically. Set up your rules, test the sequence with a small group of clients, and adjust based on results. If you need help designing a system that fits your practice, get in touch and we will walk you through the setup.
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