Hi [Client Name],

Just a friendly heads-up that Invoice #[NUMBER] for $[AMOUNT] is due on [DUE DATE] (one week from today).

You can view and pay your invoice here:
[PAYMENT LINK BUTTON]

Invoice Details:
• Invoice #: [NUMBER]
• Amount Due: $[AMOUNT]
• Due Date: [DATE]
• Services: [DESCRIPTION]

Questions? Just reply to this email.

Thanks for your business!

[Your Name]
[Your Company]

Hi [Client Name],

This is a quick reminder that Invoice #[NUMBER] for $[AMOUNT] is due on [DUE DATE] (this [DAY OF WEEK]).

[PAYMENT LINK BUTTON]

If you've already submitted payment, thank you! You can disregard this reminder.

If you have any questions or need a copy of the invoice, just let me know.

Best regards,
[Your Name]

Hi [Client Name],

Invoice #[NUMBER] for $[AMOUNT] is due today ([DUE DATE]).

Please submit your payment at your earliest convenience:

[PROMINENT PAYMENT LINK BUTTON]

Invoice Summary:
• Amount Due: $[AMOUNT]
• Services: [DESCRIPTION]
• Payment Terms: [NET 30, ETC]

Payment Options:
• Credit Card or ACH: [PAYMENT LINK]
• Check: Payable to [YOUR COMPANY], [ADDRESS]
• Wire Transfer: [BANK DETAILS IF APPLICABLE]

If you've already sent payment, thank you! Please disregard this reminder.

Questions? Call me at [PHONE] or reply to this email.

Thanks,
[Your Name]

Hi [Client Name],

Invoice #[NUMBER] for $[AMOUNT] is now 3 days overdue (original due date: [DUE DATE]).

Please submit payment immediately to avoid late fees:

[PAYMENT LINK BUTTON]

Current Balance Due: $[AMOUNT]
Days Overdue: 3
Late Fee (if applicable): $[FEE OR "None yet"]

If you're experiencing any issues with payment, please contact me immediately so we can discuss options.

If payment has already been submitted, please reply with confirmation and I'll update our records.

Best regards,
[Your Name]
[PHONE]

Dear [Client Name],

Invoice #[NUMBER] for $[AMOUNT] is now 7 days past due.

IMMEDIATE PAYMENT REQUIRED

Amount Due: $[AMOUNT + LATE FEES]
Original Due Date: [DATE]
Days Overdue: 7
Late Fee Applied: $[AMOUNT]

[PROMINENT PAYMENT BUTTON]

Per our payment terms, late fees of [X]% apply to overdue invoices. To avoid additional fees and potential work stoppage, please submit payment today.

If you're unable to pay the full amount, please contact me at [PHONE] within 24 hours to discuss a payment arrangement.

If I don't hear from you within 48 hours, I'll need to pause all active work until your account is current.

I value our business relationship and hope to resolve this quickly.

[Your Name]
[Your Company]
[PHONE]

[Client Name],

This is your FINAL NOTICE regarding Invoice #[NUMBER] for $[AMOUNT], which is now 14 days overdue.

TOTAL AMOUNT DUE: $[AMOUNT + LATE FEES]

[PAYMENT BUTTON]

Unless full payment is received within 7 days ([DATE]), we will be forced to take the following actions:

1. Engage a third-party collection agency (25% fee will be added to your balance)
2. Report this debt to credit bureaus (will impact your credit score)
3. Pursue legal action in small claims court
4. Terminate our business relationship

We prefer to avoid these steps. If you're experiencing financial difficulty, please contact me immediately at [PHONE] to discuss payment options.

This is our final attempt to resolve this matter directly.

[Your Name]
[TITLE]
[COMPANY]
[PHONE]

[Client Name],

As Invoice #[NUMBER] remains unpaid after 21 days past due and multiple notices, we have no choice but to escalate this matter.

ACCOUNT STATUS: REFERRED TO COLLECTIONS

Total Amount Owed: $[AMOUNT + LATE FEES + COLLECTION FEES]

Your account has been referred to [COLLECTION AGENCY NAME]. They will contact you directly regarding payment arrangements.

You may also face:
• Reporting to credit bureaus
• Legal action in civil court
• Additional collection costs
• Damage to business credit

If you submit full payment immediately ([PAYMENT LINK]), we may be able to recall this account from collections.

For urgent payment arrangements, contact: [PHONE]

[Your Name]
[COMPANY]