Every Friday afternoon, accounts receivable clerks run the same manual drill. They export an aging accounts receivable report to a spreadsheet—cross-referencing it with bank deposits—and draft individual emails to clients who are late on their payments. It is a tedious, repetitive process that gets delayed when more urgent accounting tasks arise. When collection emails are sent sporadically, payments arrive sporadically.
Running a manual collections process means your cash flow depends on finding spare hours in the week. Establishing a systematic, automated workflow for your outstanding invoices is the most reliable way to protect your cash flow and save your finance team hours of manual work.
The cost of manual collections for small finance teams
For a small finance team of one or two people, managing collections manually is a major administrative burden. You have to log into your accounting software, check which invoices are outstanding, verify that a wire transfer did not arrive overnight—and then manually copy and paste email templates from a desktop document.
Let us look at a realistic scenario. Imagine a business that issues 80 invoices per month. If 20% of those invoices go past due, the accounts receivable clerk must follow up on 16 accounts. If each manual email—including checking the payment status, finding the correct contact details, and drafting the message—takes 15 minutes, that is 4 hours of administrative work per week spent simply asking for money already owed.
This manual friction does more than just drain your time. It also delays your cash flow. When follow-ups are manual, they are easily forgotten during busy periods like month-end close. A delay in sending a reminder often means a corresponding delay in getting paid. Keeping this process consistent is the only way to maintain a predictable cash flow.
The anatomy of an effective payment reminder schedule
To get paid on time without damaging client relationships, you need a structured cadence. Sending too many emails makes your business look disorganized. Sending too few allows your invoices to slip to the bottom of your client's accounts payable queue.
A balanced schedule relies on three key touchpoints:
- A friendly heads-up before the invoice is due.
- A direct notice on the actual due date.
- A firm follow-up once the invoice becomes overdue.
This sequence keeps your invoices visible during your client's weekly payment runs without clogging their inbox.
Email 1: The friendly heads-up (3 days before due date)
The first email should go out three days before the invoice is due. The goal of this touchpoint is simple: help your client plan their upcoming payment run.
The tone must be helpful and polite. Assume that the client intends to pay and simply needs a quick reminder to schedule the transaction. Always attach the original invoice as a PDF and provide clear payment options within the body of the email.
- Tone guidance: Empathetic, helpful, and collaborative.
- Subject: Upcoming payment due: Invoice [Invoice Number] from [Your Company Name]
Template
Hi [Client First Name],
I hope your week is going well.
This is a quick reminder that invoice [Invoice Number] for [Invoice Amount] is due on [Due Date]. We have attached a copy of the invoice to this email for your convenience.
You can pay this invoice directly online using the link below: [Insert Payment Link]
If you have any questions about the invoice details, please let me know.
Best regards,
[Your Name]
[Your Company Name]
Email 2: The due date reminder (On the due date)
If the due date arrives and the invoice remains unpaid, send a direct reminder on the morning of the due date.
The tone here should transition from a helpful heads-up to a clear call to action. Keep the copy short. Your main objective is to eliminate friction—which means putting the payment link front and center so the client can pay immediately without searching for login credentials.
- Tone guidance: Direct, professional, and action-oriented.
- Subject: Due today: Invoice [Invoice Number] from [Your Company Name]
Template
Hi [Client First Name],
This is a brief note to let you know that invoice [Invoice Number] for [Invoice Amount] is due today, [Due Date].
To pay online now via credit card or ACH, please use our secure payment portal: [Insert Payment Link]
If you have already sent this payment, please disregard this email.
Sincerely,
[Your Name]
[Your Company Name]
Email 3: The overdue notice (7 days past due)
When an invoice is one week past due, it is time to send a firm overdue notice.
The tone must remain professional but should carry more urgency. Instead of simply asking for payment, ask if there is a specific issue preventing payment—such as a missing purchase order or an incorrect billing address. This gives the client an opportunity to raise any disputes while clearly communicating that the invoice is late.
- Tone guidance: Firm, urgent, yet polite.
- Subject: Overdue: Invoice [Invoice Number] from [Your Company Name]
Template
Hi [Client First Name],
We have not yet received payment for invoice [Invoice Number] in the amount of [Invoice Amount], which was due on [Due Date]. This invoice is now seven days overdue.
Could you please let us know when we can expect this payment to be processed? If there is an issue with the invoice or if you need us to update any billing details, please reply to this email so we can resolve it quickly.
You can view and pay the outstanding balance here: [Insert Payment Link]
Thank you for your prompt attention to this matter.
Best regards,
[Your Name]
[Your Company Name]
Best practices for writing dunning emails that get opened
Writing the email templates is only half the battle. To ensure your reminders actually lead to payments, apply these practical strategies in your daily accounts receivable workflow:
- Use clear, descriptive subject lines: Avoid vague subject lines like "Invoice query." Always include your company name, the invoice number, and the due date so the recipient can identify the email at a glance.
- Keep the copy brief: Accounts payable staff are busy. They do not want to read long paragraphs. State the invoice number, the amount, the due date, and the payment link clearly.
- Send from a monitored inbox: Never send payment reminders from a "no-reply" email address. If a client has a question about an invoice, they should be able to hit reply and reach a real person on your finance team immediately.
- Provide multiple payment options: Offering both ACH and card payments reduces the friction of manual bank transfers and speeds up the remittance process.
How to automate your AR workflow with LedgerFlow
Manually tracking these dates and sending individual emails is a constant drain on small finance teams. LedgerFlow helps small and mid-size businesses automate this entire process by sending scheduled dunning sequences based on your specific invoice terms. The platform integrates with your existing accounting tools like QuickBooks Online and Xero—keeping your payment statuses updated in real time so you never send a reminder for an invoice that has already been paid.
If you are looking to save hours of manual admin work each week and keep your cash flow predictable, you can set up your first automated reminder sequence in just a few minutes.
FAQs
How often should you send payment reminders for overdue invoices?
A standard cadence is sending a reminder three days before the due date, on the due date, and then at 7, 15, and 30 days past due. This frequency keeps your invoice top of mind without damaging the client relationship.
What should you do if a client ignores your automated reminders?
If automated emails go unanswered past 15 days, transition to a phone call. A quick conversation often resolves simple issues like a misplaced invoice, a missing purchase order number, or temporary cash flow constraints.
Should you charge late fees on overdue B2B invoices?
Yes, but only if late fee terms were clearly stated in your initial contract or service agreement. If they are, mention the impending fee in your first overdue reminder to encourage prompt payment.