8 Overdue Invoice Payment Reminder Email Templates

8 Overdue Invoice Payment Reminder Email Templates
Key Takeaways
  • Maintain a professional and polite tone when writing a strong letter for outstanding payment email.
  • If the reminder emails are ineffective, consider scheduling a meeting or phone call with the client to address the issue directly.
  • Ensure outstanding payment reminder emails stand out using concise subject lines, updated payment information, and accepted payment methods.

How do you remind your client when a payment is overdue? You send invoice payment reminder emails to the company. But your email will be among the hundreds they receive daily.

Did you know that the typical email open rate averages 38.49% for various industries? Personalizing a payment follow up email is the best way to begin improving open rates.

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Remember that you need to maintain a professional attitude and a polite tone throughout the process to avoid damaging your relationship with the client.

So, let’s get started with some strong letter for outstanding payment email reminder templates.

Quick Note:

A payment reminder email gently reminds a customer about an overdue payment and clearly explains how to pay. It should include important details like the invoice number, due date, and any late fees.

Here’s a sample email:

Subject: Friendly Reminder: Payment for Invoice #[Invoice Number]

Body:
Hi [Customer Name],

This is a kind reminder that invoice #[Invoice Number] was due on [Due Date] and is still unpaid. The total amount due is [Amount Due].

We understand things can get busy, so we wanted to make sure this doesn’t slip through. You can pay by:

  • [Payment Method 1, e.g., Online portal] — [Payment link]
  • [Payment Method 2, e.g., Bank transfer] — [Bank details]
  • [Payment Method 3, e.g., Check] — [Mailing instructions]

If you’ve already paid, please ignore this message. If you have questions, just reply to this email or call us at [Your Phone Number].

Thanks for taking care of this promptly!
Best,
[Your Name]
[Your Company Name]

What is a Payment Reminder Email?

A payment reminder email is an e-mail sent to clients or customers reminding them of an upcoming or past-due payment. The sole aim in using such an e-mail is to induce timely payments in order for businesses to achieve a positive cash flow through limiting delayed and late payments.

These emails contain important payment details such as the invoice number, the payment due date, the outstanding payment amount, and clear instructions on how to complete the payment.

Overdue Invoice Payment Reminder Email Samples [Download Free Templates]

In this section, we’ll walk you through 8 invoice payment reminder email sample templates you can use at various intervals.

Mail 1 | Pre-Due Date Payment Reminder

When to send: 3-7 days before the invoice is due.

Prior to the scheduled payment date, you can actively send payment reminders to clients that include all the information they need to make the payment on time.  By starting this process early, you can prevent the client from forgetting about your invoice.

Ask politely for confirmation that the invoice has been received, stressing that the payment terms are not past due. This initial payment follow up email marks the first communication of this nature.

Type of email: Pre-Due Date Payment Reminder

Subject Line: Follow-up on Invoice #65456

Hi {first name of client},

We hope you are doing well.

This is {your name} contacting you on behalf of {company name} concerning the payment of {invoice number}, which we sent on {date}. It will be due next week.

We’re sure you must be busy. But it would be great if you could spare some time and take a look at the invoice. Please let us know in case of any questions.

Thank You,

{Your Name}

Mail 2 | Polite Overdue Invoice Reminder Email

When to send: 1-3 days after the invoice is overdue.

It is essential to be kind and professional when a payment is overdue. With the help of this outstanding payment reminder email template, you can compose a polite message to the client about the delayed payment.

 Here’s a template for your payment follow up email format.

Type of email: Polite Overdue Invoice Reminder Email

Subject Line: Your Invoice {Invoice Number} is Overdue

Hi {first name of client},

This is a reminder that payment on invoice {invoice number} (total {amount}), which we sent on {date}, is 3 days overdue.

Please make the payment to the specified bank account on the invoice.

If you have any questions, do let us know. We will be happy to help!

Thank You,

{Your Name}

Mail 3 | Early Overdue Invoice Reminder

When to send: 5-7 days after the invoice is overdue.

Customers want you to think well of them. It’s possible that they get your payment reminder message but haven’t paid yet.

They did not acknowledge your prior messages. Regardless, you should not give up on collecting the sum of money that they owe you.

You’re aware of how frequently you’ve reminded them to pay. As a result, your tone should become more assertive.  Also, attach a copy of the invoice or send them a link to the original invoice so they can get it if they misplaced or deleted it. 

Take a look at this payment follow up email reminder:

Type of email: Early Overdue Invoice Reminder Email

Subject Line: Your Invoice {invoice number} Is 7 days Overdue!

Hi {first name of client},

Our records show that we haven’t yet received payment of {amount} for Invoice {invoice number}, which is overdue by 7 days.

Please look into this. In case the payment has already been made, kindly disregard this notice.

If you have lost this invoice, please find the original copy attached herewith.

Thank You,

{Your Name}

Mail 4 | Persistent Overdue Payment Reminder Email

When to send: 14-20 days after the invoice is due.

Send payment reminder messages if, after two weeks, the customer still hasn’t paid the bill. Even though it’s not urgent, you can now talk more confidently.  Inform your client that you will be sending follow-up messages.

Don’t forget to provide payment details, like the total amount and approved payment options. Simply include the invoice with your message.

To ensure that the payment follow up emails are reaching their intended recipient, it’s an effective strategy to request verification. Here’s a persistent overdue payment reminder email sample.

Type of email: Persistent Overdue Payment Reminder Email

Your Invoice {invoice number} is 14 days overdue!

Hi {first name of client},

We mailed you a number of times earlier to remind you of the {amount} due, which was sent on {date}. It is a reminder to say that payment is 14 days overdue.

If you have any queries regarding the payment, please reach out.

Attached is a copy of the invoice in case the previous one is misplaced. Please confirm and reply to this email as soon as possible.

Thank You,

{Your Name}

Mail 5 | Final Overdue Payment Reminder Email

When to send:  30-45 days after the invoice is overdue.

After multiple failed attempts to contact the client, you must take a more aggressive approach.

 If the customer takes your professionalism for granted, consider the possibility of receiving compensation for late payments. However, don’t lose the polite touch in your final notice for overdue invoice reminder email.

Type of email: Final Overdue Payment Reminder Email

Subject Line: Invoice {invoice number} from {date} is Overdue – Please Send Payment ASAP

Hi {first name of client},

This is a reminder that we are yet to receive payment {amount} owed on invoice {invoice number}.

Please note that, according to our terms, you may be charged additional interest on payment made 30 days after the invoice is issued.

Please don’t hesitate to get in touch with us in case of any queries regarding the payment.

If there are no issues, please organize the settlement of this invoice immediately.

Thank You,

{Your Name}

Mail 6 | Invoice Paid Confirmation

When to send: Immediately after you receive the payment.

It’s essential to notify your client as soon as the past-due payment has been successfully received. 

Even if your client delayed their payment, they have fully reimbursed the amount. It is a great opportunity to build a positive relationship further. In this email, you should acknowledge receipt and thank them for their cooperation. For your reference, we have a template:

Type of email: Invoice Paid Confirmation

Subject Line: Payment Received For Invoice – [Invoice Number]

Hi {first name of client},

Your invoice #[Invoice Number] with us is now complete. We have received your payment.

Thank you for your prompt resolution. You can view your payment details at [Link to Invoice].

Please keep this email for your records.

We look forward to serving you in the future.

Warm Regards,

{Your Name}

Mail 7 | Partially Paid Invoice Reminder

When to send: The moment you notice that a partial payment has been made. 

When a customer pays partially, you should acknowledge their contribution and politely remind them of the remaining balance. Here’s a proposed template that can help you get an idea:

Type of email: Partially Paid Invoice Reminder

Subject Line: Partial Payment Received. Balance Due On Invoice #[Invoice Number]

Hi {first name of client},

Thank you for the partial payment of [Partial Payment Amount] for Invoice #[Invoice Number].

Please note that a balance of [balance amount] from invoice #[ Invoice Number] is still due. To avoid late fees, please complete the payment at the earliest.

You can view and pay your remaining balance at [link to the invoice].

We appreciate your understanding in this matter.

Warm Regards,

{Your Name}

Mail 8 | Thank You Email For Timely Payments

When to send: The moment you receive your payment on or before the due date.

Developing positive relationships with customers is equally important as handling unpaid invoices. Acknowledging on-time payments helps you maintain good relations with your customers and promote positive behavior. Here’s a suggested template for you.

Type of email: Thank You Email For Timely Payments

Subject Line: Thank You For The Payment to Invoice #[Invoice no]

Hi {first name of client},

We want to extend our gratitude for your timely payment of Invoice #[Invoice Number].

Customers like you who consistently meet payment deadlines allow us to continue delivering the excellent services you expect and deserve.

Kindly feel free to contact us if you need additional help.

Thank you for your payment. We look forward to working with you again.

Warm Regards,

{Your Name}

Benefits Of Sending Payment Reminders

There are many benefits of sending payment reminders for your business:

  • Maintain a steady cash flow: Timely reminders makes sure that your business has the required cash for smooth functioning. In daily operations and planning, hinderence is not caused.
  • Reduce late payments and delays: In fact, 87% of businesses report that their invoices get paid after the due date. When customers get time-to-time reminders, there are less chances that they’ll miss the payment deadlines. This keeps your finances on track and avoids unnecessary delays.
    Keep customers aware of their payment obligations: It builds a habit among customers of checking the due dates, and they don’t forget to take action. This way, any confusion is removed and it promotes clear communication.
  • Help customers avoid penalties and late fees: When the reminder says that extra charges will apply if the payment is late, this sends an alarm to the customer to release payment swiftly. It builds goodwill and habituates customers to pay on time.
  • Improve compliance with regulations: When the cash flow and finances are properly maintained, it also benefits your business to follow legal and financial rules. So, the risk of fines and penalties and any regulatory issue gets reduced.
  • Present positive customer relationships: Keeping a polite and professional tone in your message emphasizes both a reminder and respect. This maintains trust without sounding pushy or aggressive.

In short, payment reminders create a healthy loop that keeps all the above aspects in check. Plus, it benefits both your business and your customers by creating transparency.

When Should You Send a Payment Reminder Email?

Sending a payment reminder email is a healthy practice. But it’s important to know the right time to send such a reminder. Some common scenarios when you should send reminders are as follows:

  • Pre-due date: Send a friendly reminder 1 to 2 weeks before the due date of the payment arrives. This helps customers to prepare and plan their payments early.
  • On the due date: A quick and polite reminder on the payment due date itself can prompt customers to act immediately.
  • Shortly after overdue: If payment is 1 to 3 days late, just send a gentle reminder to alert the customer and keep the payment process on track.
  • Overdue (1 week late): After one week of payment overdue, send a polite yet firm reminder about the unpaid invoice.
  • More overdue (2 weeks late): At this stage, you need to send a stronger reminder or better call it an overdue invoice reminder email. The goal here the customer to take prompt action.
  • Significantly overdue (1 month late): When it’s been a month and still no payment is made, now it’s important to send a clear final notice, and highlight the consequences that further delay might lead to.
  • Very Overdue (60 days late): When payments are overdue by 60 days or more, it’s time to confront and directly contact the customer, or take any legal action if required.
  • Final Notice (90 days late): If payment is still not paid after 90 days, send a final notice emphasizing the urgency and potential consequences if not made, such as collections or even legal proceedings. 

By sending invoice reminders at these point of times, you can improve the chances of receiving payment and maintain a good and healthy customer relationships. 

Quick Tip Set up automated payment reminders both before and after the due date for every important interval when you want to send a payment reminder email. This tool will save you time, reduce manual follow-ups, and ensure that no payment slips through the gaps.

What Should An Invoice Payment Reminder Include?

An effective invoice payment reminder should be clear, complete, and professional. You should be providing all the essential details so that the customer can easily understand what they own and how to pay the due. Including the important details such as the invoice number, amount, due date, and payment options helps avoid confusion and accelerates the payment process. A friendly tone and a clear request can get you a timely response.

Here is the checklist of what every invoice payment reminder should have:

  • Include the invoice number
  • Include the amount owed
  • Include the due date
  • Include payment terms/deadline
  • Provide clear payment options
  • Include payment link/instructions
  • Attach original invoice (PDF format)
  • Attach payment breakdown (if applicable)
  • Mention late fees/consequences (clearly)
  • Provide contact information
  • Polite sign-off
  • Include a call-to-action (CTA)
  • Use descriptive file names for attachments
  • Confirm invoice receipt (pre-due)

Tips to Write an Effective Payment Reminder Email

Writing a payment reminder email that gets results is all about clarity and kindness. Below are some quick key tips to help you communicate effectively and encourage timely payments:

Examples of Subject Lines By SoftwareSuggest

  • Use a clear subject line that clearly states the purpose of your email.
  • Maintain a polite tone that promotes positive customer relationships.
  • Personalize the email by addressing the client by their name.
  • Keep your message short and sweet, and focus more on the essential details.
  • Strengthen your message to show customers why your service is important.
  • Express understanding and empathy to acknowledge that delays can happen.
  • Choose the best communication channel (email, SMS messages, phone) for each customer.
  • Provide support or talk about payment alternatives if the customer requires assistance.
  • Always verify attachments like invoices and payment links before sharing.
  • Automate payment reminders using CRM or accounts receivable software for efficiency.

How To Avoid Late Payments From The Start?

If you want to avoid late payments from the very start, the process begins long before the invoice is due.

First, you need to set clear payment terms in your contracts. Your clients should know exactly what to expect. Sending the initial invoice on time and confirming that the client has received it helps avoid any misunderstandings early on. 

As an incentive, you can also offer early payment discounts to encourage prompt payment. Keep communication open by collaborating early and often with your customers to address any concerns.

Last but not least, make sure every invoice is accurate and all related data, especially for group entities, is organized correctly to avoid confusion or disputes that can delay payments.

Handling Non-Payment Situations (Beyond Emails)

When payment reminders and follow-ups don’t work, it is important to have a clear plan for handling non-payment situations beyond emails. For this, start by establishing clear payment policies and procedures so everyone understands the consequences if payments are missed.

And if this issue persists, consult a business lawyer to understand your legal options and protect your interests. 

Some key steps you can take when dealing with non-payment:

  • Send a formal debt collection letter to communicate your intent clearly.
  • Consider initiating a repayment plan. This would help the customer pay in manageable installments.
  • Begin a formal collections process if informal attempts don’t work.
  • Hire a collection agency, but be aware that this may also impact customer relations.
  • Pursue legal action only as a last resort. Weigh the amount owed against the potential costs.

Always evaluate that if pursuing the debt is worth the time, expense, and impact on your business relationships.

Tools and Technologies to Automate Payment Reminders

Technology plays a very important role in simplifying and automating the payment reminder process. When you use the right tools, it not only saves you time but also reduces errors and ensures consistent communication with clients.

Automation is the need of the hour. With the right tools, it works perfectly with the payment reminder email templates. It helps businesses to send timely reminders, track payments, and manage invoices efficiently. This improves cash from and customer satisfaction. 

Some popular tools and technologies that are used to automate payment reminders are:

  • CRM systems (e.g., NetHunt CRM, EngageBay): Manage customer data and automate personalized payment reminders within your sales pipeline.
  • Accounts Receivable (AR) Automation software (e.g., Versapay, Peakflo): Streamline invoicing, payment tracking, and collections to reduce manual work.
  • Transactional email services (e.g., Zoho ZeptoMail): Send reliable, automated emails like payment reminders and invoices with tracking features.
  • Field service invoicing software (e.g., Organilog): Generate and send invoices quickly from the field, helping service teams get paid faster.
  • Clientflow management platforms (e.g., HoneyBook): Manage client projects, contracts, and payments in one place with automated reminders.
  • Online scheduling tools with payment options (e.g., YouCanBookMe): Allow customers to book appointments and pay upfront, reducing late payments.
  • Collaborative AR payment portals (e.g., Versapay): Provide customers a secure platform to view invoices, communicate, and make payments easily.
  • Accounting systems with integrations: Connect invoicing and payment data seamlessly with your accounting software for accurate records.
  • Email tracking and scheduling tools: Monitor when payment reminder emails are opened and schedule follow-ups for better engagement.

Compliance and Legal Considerations

When payment reminders are sent, it is important that you follow all the relevant text and email regulations. Most importantly, for those who are related to debt collection. 

Laws, for instance, the Fair Debt Collection Practices Act (FDCP) set strict guidelines to ensure fair and respectful communication. 

Avoid making use of any threatening words or mentioning legal action directly or too early. This can do more harm than good to your reputation. Additionally, make sure your payment processes comply with PCI standards to protect sensitive payment data and maintain customer trust.

Conclusion

Every business or individual needs consistent and timely payments to keep their operations running and grow steadily. But in reality, not every payment arrives on time—that’s just part of doing business.

To handle late payments effectively, you need professional strategies like the outstanding payment reminder emails we discussed. When used thoughtfully, these reminder emails can significantly improve your chances of securing overdue payments and maintaining healthy cash flow.

Frequently Asked Questions

To write a payment reminder email, maintain a polite tone; clearly state invoice details and deadlines, offer assistance, and personalize the message.

Yes, using a template for sending strong letter for outstanding payment emails can save time, ensure consistency, and provide a structured approach to communicating payment reminders effectively.

The best payment reminder email format must clearly outline payment details, deadlines, and consequences of non-payment while maintaining a respectful tone.

Follow up on outstanding payment reminders with a balanced approach. Clearly communicate details and consequences while maintaining a respectful tone, offering flexible payment options for prompt resolution.

Yes, you can set up automatic payments for future invoices by configuring your payment settings to enable recurring payments or by using automated invoicing software.

Published : June 24, 2025
Pratiiek Mavani

Pratiiek Mavani is a seasoned professional in accountancy, taxation, audit, and finance, boasting over 16 years of industry expertise. He specializes in conducting audits for diverse entities including banks, optimizing their core processes through cost management and budgeting. With a focus on income tax and GST, he has represented various clients in cases and appeals concerning direct and indirect taxes across different levels.

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