🧮 Embed Free Late Fee Calculator on Your Website

🎯 Key Takeaways

Automate your invoice collection to save time and reduce stress
Set clear payment terms and late fees in every contract
Follow up professionally and consistently on overdue payments
Use tools like PingPaid to handle follow-ups automatically

Add a professional late payment interest calculator to your website, blog, or client portal — in 2 minutes. No signup. No API key. Just copy, paste, and you're done.

This embeddable widget helps your visitors calculate interest and fees on overdue invoices, demonstrating your expertise in payment collection while driving qualified leads to PingPaid.

🖼️ Live Preview

↑ This is exactly what your visitors will see. Try it — it's interactive.

📋 Embed Code

Copy and paste this code into any page on your website:

<iframe 
  src="https://pingpaid.online/tools/late-fee-calculator?embed=1&utm_source=YOUR_DOMAIN&utm_medium=iframe&utm_campaign=partner_embed" 
  width="100%" 
  max-width="400px" 
  height="600px" 
  style="border:none;border-radius:8px;box-shadow:0 4px 20px rgba(0,0,0,0.1);"
  loading="lazy"
  title="Late Fee Calculator"
></iframe>

🔧 Platform-Specific Instructions

WordPress Add a Custom HTML block and paste the iframe code. No plugin needed.
Webflow Add an Embed element, paste the iframe code, and set width to 100% with a max-width of 400px.
Squarespace Add a Code Block, paste the iframe, and adjust the height based on your layout (600px recommended).
Wix Add an HTML Embed element from the Embed section, paste the code, and set dimensions.
Ghost/Substack Use the HTML card in the editor and paste the iframe code directly.
Notion Unfortunately Notion doesn't support iframes. Link to the calculator page instead.
Shopify Add the code to a page template or use an app that supports custom HTML embeds.
React/Vue/Angular Use the iframe directly in your JSX/template, or build a custom component using the PingPaid API.

✅ Why Embed This Calculator?

💼 Demonstrate Expertise

Show clients you understand late payment law and interest calculation. Builds immediate credibility.

🎯 Drive Qualified Traffic

Visitors using the calculator are actively dealing with late payments — prime PingPaid prospects.

🔗 SEO Backlink

Every embed is a backlink to pingpaid.online, improving SEO authority for both of us.

📈 Engagement Boost

Interactive tools increase time-on-page and reduce bounce rate, improving your own SEO.

🆓 Zero Cost

No fees, no API limits, no attribution required (but appreciated!). Free forever.

⚡ 2-Minute Setup

Copy, paste, done. No configuration, no maintenance, no updates needed.

🚀 Automate Your Invoice Collection

Stop chasing payments. PingPaid automates the entire invoice collection process with 8-stage email escalation, late fee calculation, and legal demand letters.

Start 21-Day Free Trial →

Try the Free Late Fee Calculator →

📚 Learn More

❓ Frequently Asked Questions

What is the best way to handle late payments?

The best approach is automated invoice collection with clear payment terms, gentle reminders, and professional follow-up sequences. Tools like PingPaid can automate this entire process for you.

How do I calculate late fees on invoices?

Late fees are typically calculated as a percentage of the overdue amount (usually 1-2% per month). You can use our free late fee calculator or let PingPaid handle calculations automatically based on your configured terms.

What should I include in a freelance contract?

A solid freelance contract should include: payment terms, late fee clauses, scope of work, revision limits, kill fees, and intellectual property rights. PingPaid offers free contract templates in our template library.

📅 Last updated: June 2026