What is Payment Default?

    Updated: 9 March 2026

    Payment default is the legal condition in which a debtor finds itself after failing to pay an invoice on time and having been placed in default by the creditor. Once a debtor is in payment default, statutory commercial interest becomes due and the creditor may claim collection costs and take further legal steps. Where a contractually fixed payment deadline exists, payment default arises automatically the day after the due date without any notice being required.

    How does payment default work?

    Payment default arises when a debtor fails to pay on the agreed date. In most B2B contracts the payment term is explicitly stated: 14, 30, or 60 days from invoice date. Once that term is exceeded the debtor is in principle in default. Whether a formal notice of default is first required depends on the contract wording.

    If the contract or general terms contain a hard payment deadline (a provision stating that the invoice must be paid by the due date on pain of default) no notice is required. Default then arises by operation of law on the day after the due date. If no hard deadline is specified, you must first send the debtor a written demand allowing a reasonable cure period, typically 14 days.

    Once payment default has arisen, several consequences follow. The creditor is entitled to statutory commercial interest on the outstanding amount, calculated from the date of default. Extrajudicial collection costs may also be charged, with the maximum amount capped by law based on invoice value.

    For the debtor, payment default is equally significant: suppliers may suspend services or terminate the contract upon continued payment default. The contract terms typically specify after how many overdue invoices or after what period this right becomes available.

    For SMEs, tight debtor management is essential. The earlier payment default is formally established and documented, the stronger the position for any subsequent collection steps.

    Why does this matter for SMBs?

    Outstanding invoices are one of the most common liquidity problems for SMEs. Payment default that is not addressed promptly becomes a debtor balance that erodes cash flow. Sending reminders promptly, accurately recording default dates, and consistently escalating to collection are steps that directly affect working capital.

    As a buyer it is equally important to understand when you yourself are in payment default: suppliers may suspend services upon default, which creates operational risks if payments are delayed.

    How to manage this correctly

    • 1Include an explicit payment term in all contracts and invoices stating that default arises automatically upon expiry
    • 2Send a written reminder by email with read receipt immediately upon any overdue invoice
    • 3Record the default date precisely; statutory commercial interest runs from that date
    • 4Escalate to formal collection upon continued payment default and document every step
    • 5Verify proactively that your own invoices have been received by suppliers and note when they fall due

    Manage all your contract deadlines automatically

    Tracking Contracts alerts you well ahead of every notice deadline. No spreadsheets, no missed renewals.

    Start free month

    Related terms