30 days.

For business with an interval of more than 90 days between the receipt and payment of the same offshore transfer transaction and the amount reaches the equivalent of US$500,000, the enterprise is responsible for reporting to the foreign exchange bureau within 30 days from the date of receipt. To monitor and manage cross-border financial flows and ensure compliance and transparency. This is intended to prevent potential illegal activities, money laundering and other violations of relevant laws and regulations.