The references below are from Dutch sites:

E.g.

" Article 15: Limitation of credit

MSS shall be entitled to apply a two per cent credit-limitation surcharge, which however shall not be payable if payment is received within the specified number of days from the date of the invoice. "

ref. www.morestage.com/voorwaarden/Rental_Terms_EN.html

"7. User has the possibility to charge a credit limitation surcharge of 2%. This surcharge will not be charged if payment is made within 7 days from the date of invoice."

ref. http://www.wrtbv.com/terms.asp

It could be rephrased as the surcharge due to limited credit

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Note added at 2005-09-06 21:18:51 (GMT)
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There are also references to \"credit restriction surcharges\":

\"The Recovered Paper Company shall be entitled to charge a credit restriction surcharge of at least 2%. This surcharge may be deducted from the invoice amount if the invoice amount is paid within 30 days after the date of the invoice.\"


ref. http://www.cvbecologistics.com/eng/company/conditions

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Note added at 2005-09-06 21:43:45 (GMT)
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The \"English\" equivalent of this is probably a \"late payment surcharge/charge or fee\"

\"
What is a late payment surcharge?

It is a penalty for the late payment of income tax. Any individual or company that has not paid their tax in full by the surcharge date will have 10% added to the sum which remains unpaid at that date. \"

ref. http://www.incometax.gov.je/late_payment_surcharge.asp