Calculate and Add Late Fees Automatically
Stop chasing overdue invoices manually. Define your contract terms once, and let the calculator track due dates, apply late fees, and generate professional client notifications instantly.
Get Started — $11/moAuto
Late fee calculation on any scheduleInstant
Client notification templates ready to sendSimple
Dashboard to manage all your invoicesPro Plan
$11
per month, cancel anytime
- ✓Unlimited invoices & clients
- ✓Custom late fee rules (flat or %)
- ✓Automated overdue tracking
- ✓Professional email templates
- ✓Payment reminder scheduling
Frequently Asked Questions
How does the late fee calculation work?
You set your contract terms — grace period, fee type (flat amount or percentage), and frequency. The app tracks each invoice due date and automatically computes the accumulated late fee as days pass.
Can I customize the client notification templates?
Yes. Each notification template is fully editable. You can personalize the tone, add your business name, and include the exact late fee amount calculated for that invoice before sending.
Is there a free trial?
We offer a 7-day money-back guarantee. If the tool doesn't save you time chasing late payments, just email us and we'll refund you — no questions asked.