Invoicing Course

Everything about invoicing: setup, payment reminders, interest and debt collection. Templates, tables and best practice.

About the course

This course covers the entire invoicing process: from issuing invoices through to follow-up, payment reminders and, where necessary, debt collection.

Prerequisites and target audience

The course is designed for small and medium-sized businesses looking to strengthen their invoicing and cash flow routines. Participants should be familiar with basic accounting concepts and have an understanding of invoice requirements to get the most out of it. Accountants, finance managers and business owners will gain practical tools that can be implemented straight away.

What you will learn

The course connects theory with practical examples, so you understand how to document claims in your accounts and how to follow the rules under the Late Payment of Commercial Debts Act when recovering outstanding amounts.

Module structure

  1. Invoice basis and sending: Templates, line items and control routines before sending.
  2. Follow-up after the due date: Notifications, payment arrangements and documentation in your accounting system.
  3. Debt collection and write-offs: Working with debt collection agencies, statutory interest and accounting for bad debt.
  4. Automation: Using invoicing software, an invoice reader and bank integration.

Tools and templates

Practical reminder sequence

Step Days Action
1 0 Invoice issued with 30-day payment terms
2 30 First payment reminder with late payment fee
3 44 Formal debt collection notice
4 58 Referral to debt collection agency

Rates and calculations

Element Rate Notes
Late payment fee £70 (invoices over £1,000) Fixed statutory compensation under the Late Payment of Commercial Debts Act
Statutory interest Bank of England base rate + 8 percentage points Applied from the day after the payment due date
Debt collection costs Stepped scale based on principal debt Follow the debt collection fee schedule

The table shows standard rates. The course provides guidance on how to document calculations in your accounts and communicate clearly with customers to avoid disputes.

Automation and system support

We show how cloud-based systems handle sending, payment reminders and payment matching. In Nexbal, quotes, invoices, credit notes and reminders go out as PDF by email, in sterling or foreign currencies, and payments are matched from uploaded bank statements. You will also learn how open APIs, Direct Debit and payment references help maintain a steady cash flow.

Next steps

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