3. For the purposes of paragraph 1, point (b), Member States shall apply a maximum threshold per customer and per single transaction, whether the transaction is carried out in a single operation or through linked transactions. That maximum threshold shall be established at national level, depending on the type of financial activity. It shall be sufficiently low in order to ensure that the types of transactions in question are an impractical and inefficient method for money laundering or terrorist financing, and shall not exceed EUR 1 000 or the equivalent in national currency, irrespective of the means of payment.