You haven't provided much context, so it's hard to tell.

e.g.,

Observações/Excepções
- Se for ultrapassada a data limite de pagamento indicada na factura, a EDA cobrará, a título de mora, determinada importância, estabelecida de acordo com o preçário em vigor.
http://www.riac.azores.gov.pt/RIAC/conteudos/servico/servico...

12. Cashback may be suspended and not earned if you break any of the terms and conditions of your 123 Credit Card Agreement, for example:
12.1. If the minimum payment due on your 123 Credit Card has not reached your 123 Credit Card account by the payment due date;
https://www.santander.co.uk/csgs/Satellite?appID=abbey.inter...






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Note added at 3 horas (2013-06-18 16:50:30 GMT)
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Another possibility is 'pay by date', as in:

Using Thinkflow Payables Management users can view the scanned invoices and automatically extract the data on the invoice. Data such as invoice number, invoice date, pay by date, amount can be extracted automatically and based on the extracted information, the system will automatically assign the tasks to the users for processing the invoice.
http://www.thinkflows.com/account-payables-solution.html