Writing Payment Reminders: Professional Templates and Tips for 2025

Unpaid invoices are a real problem for freelancers and small businesses. But before you go straight to a formal dunning notice, a friendly payment reminder is often the better approach. In this guide, I'll show you how to write professional payment reminders that work - without damaging the customer relationship.

Key Takeaways

• Payment Reminder vs. Dunning Notice: Reminder is friendlier, dunning is more formal
• Timing: 3-7 days after due date is ideal for the first reminder
• Tone: Friendly but firm - the customer forgot, didn't cheat
• Legally: Payment reminder isn't required before dunning proceedings
• Automation: Saves time and ensures consistency

Payment Reminder vs. Dunning Notice: The Difference

When Reminder, When Dunning?

Payment reminder for:

• First payment delay
• Long-term, reliable customers
• Smaller amounts
• When customer relationship matters

Go straight to dunning for:

• Repeated payment delays
• Unknown or one-time customers
• Larger amounts
• When already reminded verbally

The Right Timing

Recommended Schedule

The 30-Day Rule for Default

Important: Under § 286 BGB, default occurs automatically 30 days after the due date and receipt of the invoice - even without a dunning notice! For consumers, only if this was noted in the invoice.

Structure of a Payment Reminder

The Perfect Structure

1. Subject: Clear and friendly
2. Greeting: Personal if possible
3. Introduction: Polite reference to open invoice
4. Details: Invoice number, date, amount
5. Request: Friendly payment request
6. Contact: Be available for questions
7. Closing: Positive tone, apology if already paid

What Must Be Included?

Required information:

• Invoice number
• Invoice date
• Due date
• Outstanding amount
• Bank details

Recommended:

• Service description (brief)
• Payment deadline for the reminder
• Contact details for questions

Sample Templates for Payment Reminders

Template 1: First Friendly Reminder

Subject: Friendly Reminder - Invoice [Number] dated [Date]

Dear Mr./Ms. [Name],

While reviewing our accounts, we noticed that invoice [Number]
dated [Date] for [Amount] € is still outstanding.

The payment was due on [Due Date].

We're sure the payment simply slipped through. We would kindly
ask you to transfer the amount within the next few days.

Our bank details:
[IBAN]
[BIC]
Reference: [Invoice Number]

If you have already paid, please disregard this reminder.

If you have any questions, please don't hesitate to contact me.

Best regards,
[Name]
[Contact Details]

Template 2: Second Reminder (Slightly Firmer)

Subject: Second Reminder - Invoice [Number] Still Outstanding

Dear Mr./Ms. [Name],

Unfortunately, we haven't received payment following our reminder
of [Date]. Invoice [Number] for [Amount] € has been due
since [Due Date].

We kindly ask you to settle the outstanding amount by [new date,
e.g., 7 days].

If there are problems with the invoice or your cash flow,
please contact us. We'll surely find a solution.

Our bank details:
[IBAN]
Reference: [Invoice Number]

If payment is already on its way, thank you, and please
ignore this reminder.

Best regards,
[Name]

Template 3: Via Email (Short and Concise)

Subject: Quick Reminder: Invoice [Number]

Hi [First Name],

Quick reminder: Invoice [Number] dated [Date] for
[Amount] € is still open.

Could you arrange payment this week?

If there are any questions, just let me know!

Best,
[Name]

---
Bank details: [IBAN]
Reference: [Invoice Number]

Tips for Effective Payment Reminders

1. Strike the Right Tone

Good:

• "While reviewing our records..."
• "We're sure it simply slipped through..."
• "We'd like to kindly remind you..."

Avoid:

• "You still haven't paid!"
• "We demand that you..."
• "Final warning!"

2. Be Specific and Complete

Make it as easy as possible for the customer to pay:

• Include all invoice details
• Provide bank details directly
• Specify the reference
• Attach the invoice again if needed

3. Offer a Way Out

Sometimes there's a problem behind the non-payment:

• "If there are questions about the invoice..."
• "For cash flow issues, we can discuss installment payments..."
• "Contact us if anything is unclear..."

4. Close Positively

Keep the door open for future collaboration:

• "We look forward to continued cooperation."
• "Thank you for your understanding."
• "We're here for you if you have questions."

Payment Reminder via Email or Letter?

Email

Advantages:

• Fast and free
• Immediate delivery
• Easy to automate
• Invoice can be attached

Disadvantages:

• Can land in spam
• Appears less formal
• No proof of delivery

Letter

Advantages:

• Appears more serious/official
• Arrives reliably
• Can't be overlooked

Disadvantages:

• Postage and effort
• Takes longer
• Harder to automate

Recommendation: First reminder via email, second reminder via letter. For important customers, consider a brief phone call first.

Automating Payment Reminders

Manual payment reminders cost time and are often forgotten. Automation helps:

Benefits of Automation

• Consistency: Every customer is treated equally
• Time savings: No manual effort
• Punctuality: Reminders always go out on time
• Professionalism: Uniform appearance

What Can Be Automated?

1. Due date monitoring: System detects overdue invoices
2. Email sending: Automatic reminder emails
3. Escalation: Automatic transition to dunning
4. Reporting: Overview of outstanding items

With Clever Invoice, you automate your entire collections process. Define rules for when which reminder goes out, and sit back.

Legal Aspects

Calculating Default Interest

From the start of default, you can charge interest:

• B2B: 9 percentage points above base rate (currently about 12.12%)
• B2C: 5 percentage points above base rate (currently about 8.12%)

Example B2B:

Outstanding amount: €1,000
Default period: 30 days
Default interest: €1,000 × 12.12% × (30/365) = €9.97

Dunning Fees

You may charge dunning fees if:

• The customer is in default
• You've actually incurred costs

Typical dunning fees:

• First dunning: €0-5
• Second dunning: €5-10
• Third dunning: €10-15

Note the Statute of Limitations

Invoice claims expire after 3 years (at year's end). An invoice from March 2025 expires on December 31, 2028. Dunning notices don't interrupt the statute of limitations - only court dunning proceedings do!

When the Reminder Doesn't Work

Next Steps After Unsuccessful Reminders

1. Phone contact: Seek personal conversation
2. Formal dunning: With deadline and default consequences
3. Final dunning: Announcement of legal action
4. Collections: Professional debt collection
5. Court dunning proceedings: Online via court portals

When to Involve Lawyer/Collections?

Collections sensible for:

• Amounts from €100-200
• When customer is unreachable
• Suspected insolvency
• When you want to save time

Lawyer sensible for:

• Disputed claims
• Higher amounts (from €1,000)
• When collections was unsuccessful
• In case of debtor insolvency

Checklist: Writing Payment Reminders

• [ ] Invoice is actually due
• [ ] Payment receipt double-checked
• [ ] All invoice details included
• [ ] Friendly, non-accusatory tone
• [ ] Bank details provided
• [ ] New payment deadline set
• [ ] Contact option for questions
• [ ] Positive closing phrase
• [ ] Invoice as attachment (for email)

Conclusion: Friendly but Consistent

The art of the payment reminder lies in the balance: Friendly enough not to damage the customer relationship, but firm enough to get payment.

The most important rules:

✅ React quickly (3-7 days after due date) ✅ Word it friendly (customer forgot, didn't cheat) ✅ Be specific (include all details) ✅ Make it easy (bank details, reference) ✅ Stay consistent (escalate on non-payment)

With Clever Invoice, you keep track of your open invoices and send professional payment reminders with just a few clicks - or fully automatically. Try it free now!