Free Tool

    Late Payment Fee Calculator

    Calculate exactly how much to charge for overdue invoices. Get a fee breakdown, total amount due, and ready-to-use wording for your invoices and payment policies. Jurisdiction-aware.

    Invoice Details

    Common: 1–2% per month (18% annually)

    Days after due date before fees apply. Common: 0–5 days.

    Fee Breakdown

    Invoice Amount

    $1000.00

    Late Fee

    +$15.00

    1.5% per month × 1.0 months

    Total Due

    $1015.00

    Fee by days overdue

    Days OverdueBillable DaysLate FeeTotal Due
    7 days7 days$3.50$1003.50
    14 days14 days$7.00$1007.00
    30 days30 days$15.00$1015.00
    60 days60 days$30.00$1030.00
    90 days90 days$45.00$1045.00

    Policy Wording

    A late payment fee of 1.5% per month will be applied to the outstanding balance of any invoice not paid by the due date. Interest is calculated on a simple (non-compounding) basis.

    Add this to your contracts and payment terms.

    Invoice Wording

    This invoice is 30 days overdue. A late fee of $15.00 has been applied (1.5% per month). The total amount now due is $1015.00.

    Add this note to the overdue invoice.

    Add policies + reminders in Pro

    Can You Pay That automatically applies your late fee policies and sends polite reminders until you're paid. No more manual calculations.

    Late Fee Best Practices

    Follow these guidelines to ensure your late fees are enforceable and maintain good client relationships.

    State terms upfront

    Include late fee terms in your contract and on every invoice before work begins.

    Know your legal limits

    Check your jurisdiction's usury laws. Fees above the legal cap are unenforceable.

    Allow a grace period

    A 3–5 day grace period shows good faith and avoids penalizing minor delays.

    Keep fees reasonable

    Courts may void 'penalty' fees. Fees should reflect actual cost of late payment.

    Frequently Asked Questions

    Everything you need to know about late payment fees.