⏰ Late Invoice Interest and Payment Calculator
Calculate interest charges on overdue client invoices and total amount owed including penalties.
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📘 Complete Guide: Late Invoice Interest and Payment Calculator
Use this free calculator to instantly estimate your numbers. All calculations happen in your browser — no data is stored.
Can freelancers legally charge interest on late payments?
Yes — if stated in your contract. Include a late payment clause: '1.5% monthly interest (18% APR) applies to invoices unpaid after 30 days.' This is standard and legally enforceable in most jurisdictions.
How to prevent late invoice payments?
Require 25-50% upfront deposits. Use automated payment reminders at 7, 14, and 30 days overdue. Accept credit cards to reduce friction. Use Stripe Invoicing or HoneyBook for automatic collections.
When should freelancers use a collections service?
After 90 days and two failed collection attempts, consider a collections agency (they take 25-50% of recovered amount) or small claims court for amounts under $10,000.