Invoice Details
Invoice
$
Auto-filled with today — adjust if needed
Fee Structure
%
Common rates: 1.5%/mo (18%/yr) or 2%/mo (24%/yr)
Days after due date before fees start accruing
Late Fee Owed
$0
in fees & interest
Days overdue
0 days
Interest accrued
$0
Flat fees
$0
Daily rate
$0/day
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Total Amount Now Due
$0
Original invoice + all fees
Put it in your contract
Late fees are only enforceable if stated in your contract or invoice terms. Add a clause like "1.5% monthly interest on overdue balances" before you start work.
Common late fee rates
Most freelancers charge 1.5% per month (18% annually). Some use a flat fee of $25–$50/month. Both are standard and legally defensible in most jurisdictions.
When to escalate
If an invoice is 60+ days overdue, consider sending a formal demand letter, using a collections service, or filing in small claims court for amounts under $10,000.