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How to Claim Interest on a Late Freelance Payment

Tap each step to see it in order.

  1. Check whether the contract specifies a late-interest rate

    If the contract includes language like "a late fee of a set annual rate applies if payment is overdue," you can claim interest at that specified rate.

  2. Check for a higher rate that applies once litigation starts

    If you proceed to a payment order or lawsuit, many jurisdictions apply a higher statutory interest rate to the period after the claim is filed.

  3. Calculate the late-payment interest

    The general formula is: unpaid principal x annual interest rate x (days late / 365), counting from the day after the due date to the day payment is actually received.

  4. Include the interest amount in your formal payment demand

    When sending a formal written demand for payment, state both the unpaid principal and the calculated interest amount, along with how you calculated it, to make your claim clear.

Do not just ask for the principal when payment is late

Even without a contract clause, you can generally claim late-payment interest based on the statutory rate in your jurisdiction. This is general information about late-payment interest, not legal advice -- consult a local professional for your specific situation.

Keep a clean record for the calculation

Note the exact due date, the date payment actually arrived, and the outstanding amount at each point, since a clear calculation makes your interest claim far more credible and easier for the other party to simply pay rather than dispute.

Frequently Asked Questions

Can I still claim late interest if the contract does not mention it?

Yes -- most jurisdictions allow a late-payment interest claim based on the default statutory rate even without a specific contract clause, so the absence of a clause does not mean you cannot claim anything.

Do I need to issue an invoice for the interest amount too?

Late-payment interest is generally treated as compensation for damages rather than part of the original transaction price, so whether it is taxable can depend on your situation -- for a significant amount, it is worth checking with a local tax professional.