The tax bureau suggests that the non-compliance in the purchase and sale of refined oil should be handled according to the following steps: checking accounting records, finding reasons, rectification and filing.

1. Check accounting records: First of all, you need to check the accounting records of the enterprise to confirm whether the purchase and sale of refined oil are in line with the actual situation. If problems are found, it is necessary to adjust records and check accounts in time to ensure the accuracy of accounts.

2. Find out the reasons and make rectification: If the refined oil is found to be inconsistent with the sales, it is necessary to further find out the reasons and analyze the causes of the problems, such as human factors or system loopholes. Then carry out rectification and take measures to avoid similar situations from happening again.

3. Handling of reporting: If the discrepancy between the purchase and sale of refined oil is serious, it is necessary to report it to the tax bureau in time, explain the situation and submit relevant materials. The tax bureau will verify and deal with it according to the actual situation, and may require the enterprise to pay back or adjust the tax.