How to Manage Overdue Invoices in the UK

To manage overdue invoices in the UK, start by identifying which invoices are overdue and send a polite reminder immediately after the due date. If still unpaid, follow up with a formal payment reminder letter and consider offering a payment plan. This article covers why invoices become overdue, detailed step-by-step instructions, a worked example with calculations, common mistakes to avoid, and how HelloGrowthCRM supports managing invoices and follow-ups.

Why this comes up / what goes wrong

Small business owners in the UK often face overdue invoices because customers may delay payment due to cash flow issues, forgetfulness, or disputes about the invoice details. Using informal channels like WhatsApp, email, or spreadsheets for invoicing and follow-up can lead to missed reminders and poor tracking. Without a clear system, invoices can be overlooked, causing cash flow problems and increasing stress for business owners.

Step-by-step

1. Identify overdue invoices clearly: Review your records to find all invoices past their due date. Check invoice numbers, customer names, amounts, and due dates to ensure accuracy.

1. Send a polite reminder promptly: Contact the customer by email or WhatsApp with a courteous message referencing the invoice number, amount, and due date. Attach a copy of the invoice to make it easy for the customer to review.

1. Send a formal payment reminder letter if unpaid after 7 days: Use email or post to send a formal letter outlining payment terms, consequences of non-payment, and your contact details.

1. Offer a payment plan if appropriate: If the customer indicates financial difficulties, propose a payment plan to spread the amount over agreed instalments.

1. Record all communications and responses: Keep detailed notes of reminders sent, customer replies, and any agreed actions to maintain a clear audit trail.

1. Consider debt recovery options if unpaid after 30 days: If payment remains outstanding, evaluate debt collection agencies or legal action as next steps.

1. Review your invoicing and follow-up process regularly: Identify bottlenecks and improve your system to prevent future overdue invoices.

Example (fictional figures)

A recruitment consultancy in Bristol issued an invoice of £3,200 on 15/03/2024, payable within 30 days (due 14/04/2024). The invoice remains unpaid on 20/04/2024.

Step 1: Identify overdue invoice: Invoice amount = £3,200 Due date = 14/04/2024 Today = 20/04/2024 (6 days overdue)

Step 2: Send polite reminder on 20/04/2024.

Step 3: No payment received after 7 days; send formal letter on 27/04/2024.

Step 4: Customer requests payment plan on 02/05/2024.

Step 5: Agree payment plan of 2 instalments: First instalment = £1,600 due 10/05/2024 Second instalment = £1,600 due 10/06/2024

Step 6: Record all communications.

Step 7: After first instalment received on 10/05/2024, monitor second instalment.

Calculations: £1,600 + £1,600 = £3,200 total invoice amount

Common mistakes

• Ignoring overdue invoices: Prevent this by scheduling regular reviews of outstanding invoices.
• Chasing payments too late: Prevent by sending the first reminder immediately after the due date.
• Using informal channels without central tracking: Prevent by managing invoices and follow-up tasks in a CRM such as HelloGrowthCRM.
• Not documenting communications: Prevent by recording all reminders and responses to maintain a clear audit trail.
• Failing to offer payment plans when needed: Prevent by discussing flexible payment options early to increase chances of payment.
• Delaying debt recovery decisions: Prevent by setting clear internal deadlines for escalation.

Doing this in HelloGrowthCRM

HelloGrowthCRM lets you create, send, and track quotes, proposals, and invoices directly from the deal record. The quotation status—sent, viewed, accepted—is visible on the same screen as your follow-up task, helping you plan reminders and calls efficiently. Payments received are reconciled against invoices and deals, so you can see which invoices remain unpaid. Learn more about the built-in CRM dialer and WhatsApp and SMS CRM features to speed up your follow-up process.

Frequently asked questions

How long should I wait before chasing an overdue invoice? Send a polite reminder immediately after the due date passes. If unpaid after 7 days, send a formal reminder letter.

Can I charge interest on overdue invoices in the UK? You can charge interest if your contract or invoice terms include this, but check the legal conditions carefully before applying interest charges. NEEDS EXPERT REVIEW

What if the customer disputes the invoice? Discuss the dispute promptly and clarify any misunderstandings. You may need to adjust the invoice or provide additional documentation.

Is it better to call or email for overdue invoice reminders? A combination works best: start with email or WhatsApp for a written record, then call to discuss if there is no response.

Can HelloGrowthCRM automate invoice reminders? HelloGrowthCRM tracks invoice status and lets you manage follow-up tasks, but automatic reminders depend on your plan and setup. Check your HelloGrowthCRM for the United Kingdom details.

Key takeaways

• Identify and list overdue invoices promptly.
• Send polite and formal reminders at set intervals.
• Record all communications and responses.
• Offer payment plans to assist customers in paying.
• Use a CRM system like HelloGrowthCRM to streamline invoicing and follow-up.
• Escalate to debt recovery if payments remain overdue beyond 30 days.

Managing overdue invoices is essential to keep your business cash flow healthy. Start organising your invoicing and follow-up today with HelloGrowthCRM and improve your collections process.

Start on the Free Forever plan (200 leads, no credit card) at HelloGrowthCRM.