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Legal
Contract Late Fee Calculator
Daily late fee based on contract rate and days overdue
Runs locally in your browser
Parameters
Results
- Late fee
- $150
- Total due
- $10,150
- Fee as % of debt
- 1.5%
Reference calculation only. Actual enforceability depends on your contract and state law.
How it works
Calculate contract late fees from a daily percentage rate and days overdue.
Who it's for: Business owners, contractors, and attorneys drafting or enforcing payment terms.
Late fee = amount owed × (daily rate ÷ 100) × days overdue.
Shows total due (principal + fees) and fee as a percentage of debt.
Reference calculation — enforceability depends on contract language and state law.
How to use
- Enter Amount owed ($), Daily rate (%/day), and Days overdue.
- Read Late fee, Total due, and Fee as % of debt.
Good to know
- Some states cap late fees or require specific contract disclosures.