Free Reminder Notice for Unpaid Invoice Template & AI Invoice Maker

A Reminder Notice for Unpaid Invoice is a formal letter referencing an overdue invoice number with a total amount due, structured as itemized lines showing fixed amounts but no quantities or tax, built with Template.net's AI-powered invoice builder. It's sent mainly for payment collection reminders by businesses, freelancers, contractors, and professionals across industries.

Customize a Free Template
Start with this free editable and printable Reminder Notice for Unpaid Invoice template and personalize it online for overdue payments by your business, freelancer services, or contract work. (or )
Generate an On-Brand Reminder Notice for Unpaid Invoice with AI
Describe the overdue invoice number, total amount due, and payment instructions, or upload your existing rate card and AI will build an itemized invoice with fixed amounts per line, ready to review and send immediately.
Edit in the HTML5 Editor
Adjust the invoice number, issue and due dates, sender and recipient address blocks, message paragraphs, closing sign-off, signature line, sender contact info, and footer credit line.
Download a Printable PDF
Download the completed bill as a PDF for client review, sign-off, or your business records.

Reminder Notice for Unpaid Invoice Line Items and Pricing Units

Bill these deliverables using the unit each one is normally charged in, set as the quantity or noted in the line description — invoice generation (per invoice), payment processing (per transaction), late payment fee (per invoice), account reconciliation (per hour), credit check (per report), payment reminder letter (per letter), customer service support (per hour), payment plan administration (per month), dispute resolution (per case), collections agency referral (per referral), electronic funds transfer setup (per setup), payment portal maintenance (per month), statement mailing (per statement), refund processing (per transaction), interest calculation on overdue balances (per day).

Bill these deliverables using the unit each one is normally charged in, noted in the line description — invoice generation (per invoice), payment processing (per transaction), late payment fee (per invoice), account reconciliation (per hour), credit check (per report), payment reminder letter (per letter), customer service support (per hour), payment plan administration (per month), dispute resolution (per case), collections agency referral (per referral), electronic funds transfer setup (per setup), payment portal maintenance (per month), statement mailing (per statement), refund processing (per transaction), interest calculation on overdue balances (per day).