Late Fee Reminder Email: How to Apply a Late Fee Professionally

A late fee only works if it was agreed in advance. If your contract or invoice terms include one, a calm email explaining that it now applies, with an option to waive it for prompt payment, often gets things moving.

Free template

Replace every [bracket] before sending.

Hi [Client Name],

Invoice [Invoice #] for [Amount] was due on [Due Date]. Per our agreed terms ([Late Fee Term, e.g. 1.5% per month]), a late fee of [Fee] now applies, bringing the balance to [New Total].

As a courtesy, I will waive the fee if the original [Amount] is paid by [Waiver Date].

Payment link: [Payment Link]

Thanks,
[Your Name]

Before charging a late fee

• Confirm it is in the signed contract or the terms the client accepted.
• Check local rules on maximum interest or fees.
• Do not add a fee you never disclosed. That invites a dispute.

Courtesy waiver

Offering to waive the first late fee if paid by a date is a strong incentive and keeps goodwill.

Free mini-pack: 3 more follow-up templates (HTML + PDF), no signup.

Related guides

• Invoice 30 days overdue email
• Invoice 60 days overdue email
• Pausing work until payment email
• Final notice before small claims
• Past-due invoice payment reminder

Practical communication guidance only, not legal advice. Payment terms, late fees, and collection options depend on your contract and jurisdiction.