https://www.epo.org/en/service-support/faq/applying-patent/cnipa-epo-pilot-programme/epo-international-preliminary-4

How can I pay the fees due for the international preliminary examination?

The handling fee (EUR 183) and the preliminary examination fee (EUR 1 830) have to be paid directly to the EPO in EUR by bank transfer, from a deposit account held at the EPO or by credit card (Mastercard, Visa and Amex). You can find more information about how to pay fees to the EPO at epo.org/applying/fees/payment.html.

The EPO will require a late payment fee if you do not pay the fees in time (Rule 58bis.2 PCT). For how the EPO determines the date to be considered as the date on which payment is made, please see Article 7 RFees.