Free embeddable widgets for your website: invoice generators, late fee calculators, hourly rate calculators, currency converters, and payment counters.
Brought to you by PingPaid — the automated invoice collection platform for freelancers.
15 free tools, guides, and calculators — no signup required
Detailed guide and resources
Detailed guide and resources
Detailed guide and resources
Detailed guide and resources
Detailed guide and resources
Detailed guide and resources
Detailed guide and resources
Detailed guide and resources
Detailed guide and resources
Detailed guide and resources
Detailed guide and resources
Detailed guide and resources
Detailed guide and resources
Detailed guide and resources
Detailed guide and resources
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 →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.
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.
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