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Debt Collection

Payment Default: What to Do When Clients Do Not Pay - Step by Step

Client not paying? From friendly reminder to debt collection: The complete guide with sample letters, deadlines, and legal basics.

Clever Invoice Team · ·12 min read read

Payment Default: The Complete Guide

When clients do not pay their invoices, it is frustrating - and expensive. This guide shows you step by step how to proceed professionally: from the friendly reminder to the court order.

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When Is a Client in Default?

Payment default begins automatically:

SituationDefault Begins
With payment terms on invoiceDay after due date
Without payment terms (B2B)30 days after invoice receipt
Without payment terms (Consumer)After reminder

Example

Invoice from March 1 with 14-day payment terms:

  • Due: March 15
  • Default from: March 16

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The 4 Stages of the Reminder Process

Stage 1: Payment Reminder (Friendly)

When: 3-7 days after due date

A friendly reminder - maybe the invoice was just overlooked.


Subject: Friendly Reminder - Invoice No. 2025-042

Dear [Name],

While reviewing our accounts, we noticed that payment
for the invoice below is still outstanding:

Invoice No.: 2025-042
Invoice Date: March 1, 2025
Amount: €1,190.00
Due since: March 15, 2025

If you have already made the payment, please
disregard this notice.

Otherwise, we kindly ask for payment within the next
7 days to the account you have on file.

Please contact us if you have any questions.

Best regards,
[Your Name]

Stage 2: First Reminder

When: 7-14 days after payment reminder

Now it becomes more formal. You can charge reminder fees from here.


Subject: 1st Reminder - Invoice No. 2025-042

Dear [Name],

despite our payment reminder of [Date], the following
invoice remains unpaid:

Invoice No.: 2025-042
Invoice Date: March 1, 2025
Original Amount: €1,190.00
Reminder Fee: €5.00
Late Interest: €8.72
Total Amount: €1,203.72

Please transfer the total amount within 10 days
to the following account:

IBAN: DE89 3704 0044 0532 0130 00
Reference: INV 2025-042

If payment is not received, we will unfortunately
be forced to take further action.

Best regards,
[Your Name]

Stage 3: Second Reminder (Final Reminder)

When: 10-14 days after first reminder

Now it should be clear that this is serious.


Subject: 2nd and Final Reminder - Invoice No. 2025-042

Dear [Name],

unfortunately, despite our previous reminders, we have
not yet received payment.

Outstanding amount including fees: €1,215.00

We hereby request you one final time to pay the amount
within 7 days.

If payment is not received on time, we will proceed
without further notice to:

• Engage a debt collection agency OR
• Initiate court proceedings

Any additional costs incurred will be charged to you.

Best regards,
[Your Name]

Stage 4: Debt Collection or Court Proceedings

When: 7+ days after final reminder

Now you have two options:

OptionAdvantagesDisadvantages
Debt CollectionLess effort for you, pressure on debtorCosts commission (often 10-20%)
Court OrderCheaper, results in enforceable titleMore effort on your part

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Calculating Late Interest

From the start of default, you can charge interest.

Interest Rates (2025)

CustomerBase Rate +Effective Rate
B2B9 percentage pointsapprox. 12.12% p.a.
Consumer5 percentage pointsapprox. 8.12% p.a.

Calculation Formula


Late Interest = Invoice Amount × Interest Rate × Days / 365

Example Calculation

  • Invoice Amount: €1,000
  • Days in Default: 30
  • Interest Rate B2B: 12.12%

€1,000 × 0.1212 × 30 / 365 = €9.96

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Reminder Fees: What Is Allowed?

You may charge reasonable reminder costs:

ReminderTypical Fee
Payment Reminder€0 (optional)
1st Reminder€2.50 - €5.00
2nd Reminder€5.00 - €7.50
3rd Reminder€7.50 - €10.00

Note: Fees must reflect actual costs. Courts are stricter with consumers.

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Court Payment Order: How It Works

Step 1: File Application

Online via the court portal or by paper form at the responsible court.

Step 2: Pay Costs

Amount in DisputeCourt Costs
up to €500€32
up to €1,000€32
up to €2,000€49
up to €5,000€73

Step 3: Order Is Served

The court serves the payment order to the debtor.

Step 4: Possible Responses

Debtor ResponseWhat Happens?
PaymentDone
No response (2 weeks)Apply for enforcement order
ObjectionRegular court proceedings

Step 5: Enforcement Order

Once final, you have an enforceable title (valid 30 years). The bailiff can then seize assets.

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Tips to Prevent Payment Defaults

1. Advance Payment or Deposit

For new customers or larger projects:

  • 30-50% deposit before project start
  • Partial invoices for long projects

2. Short Payment Terms

  • 7-14 days instead of 30 days
  • Discount for early payment (2% if paid within 7 days)

3. Credit Check

Check creditworthiness before large orders:

  • Credit agencies
  • Credit reports
  • Company register extract

4. Automatic Payment Reminders

With Clever Invoice:

  • Automatic reminder 3 days after due date
  • Pre-set escalation levels
  • Overview of all outstanding items

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Legal Framework

BGB § 286 - Default of the Debtor

The debtor is in default if they do not perform upon a reminder from the creditor.

BGB § 288 - Interest on Arrears

A monetary debt is to be paid with interest during default at 5 percentage points above the base rate. For legal transactions not involving a consumer, the rate is 9 percentage points above the base rate.

BGB § 280 - Damages for Breach of Duty

If the debtor breaches a duty, the creditor may demand compensation for the resulting damage.

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Communicating with Delinquent Clients

Dos

✓ Stay professional and objective ✓ Communicate in writing (traceability) ✓ State deadlines clearly ✓ Show consequences

Don'ts

✗ Get personal or threaten ✗ Publicly shame them ✗ Set unrealistic deadlines ✗ Wait too long

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Debt Collection with Clever Invoice

Clever Invoice automates your reminder process:

  1. Outstanding items at a glance - Dashboard shows overdue invoices
  2. Automatic reminders - According to your rules
  3. One-click reminders - Professional reminder letters
  4. Escalation levels - From friendly to final
  5. Interest calculator - Automatic calculation

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Conclusion: Professional and Consistent

Payment default is frustrating, but manageable with the right process:

  1. React quickly - Do not wait weeks
  2. Escalate - From friendly to firm
  3. Document - Every reminder in writing
  4. Be consistent - Take action on non-payment
  5. Prevent - Deposits, short payment terms

With a clear reminder process and the right tools, you significantly increase your payment rate.

Frequently asked questions

When is a client in payment default?

For business customers (B2B), default occurs automatically 30 days after invoice receipt - even without a reminder. For private individuals, you must first send a reminder. If specific payment terms are on the invoice, default begins the day after that deadline.

How high can reminder fees be?

Reminder fees must be reasonable and reflect actual costs. Typical amounts are €2.50-5 for the first reminder and up to €10 for subsequent reminders. Excessive fees can be deemed invalid by courts.

Do I have to send reminders before court proceedings?

No, legally you can apply for a court order as soon as the debt is due. Practically, it makes sense to send reminders first - clients often pay and you save court costs.

What does a court payment order cost?

Court costs depend on the amount in dispute. For a claim up to €1,000, you pay €32 in court fees. These costs can be recovered from the debtor if they pay.

When is a debt collection agency worthwhile?

Debt collection is worthwhile when you want to avoid the effort or the claim is large enough. Collection agencies typically take 10-20% commission. For small amounts (under €100), the court route is often cheaper.

What happens if the debtor objects to the payment order?

If the debtor objects, the case goes to regular court proceedings. You must then prove your claim in court. This is more effort, but usually successful for legitimate claims.

How long can I pursue a claim?

The standard limitation period is 3 years (from year-end of invoice date). With a legally binding enforcement title (enforcement order or judgment), the period extends to 30 years.

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