If you sell products on Amazon but do not need to declare Value Added Tax (VAT), you can follow the steps below to zero-declare VAT:

1. Log in to your Amazon Seller Central account.

2. Select the "Reports" option in the top navigation bar.

3. Select "Tax Document Library" in the drop-down menu.

4. Under "Generate Flat File Reports", select "VAT Transactions Report".

5. On the report generation page, select the appropriate date range to include the period for which you want to zero-declare VAT.

6. Select the desired report format and click the "Generate" button.

7. After the report is generated, download and save the report file.

8. Open the report file using appropriate accounting software or tools to prepare for VAT zero-declaration.

9. Fill in the relevant information in the report according to the tax requirements of your country/region, including your sales, input tax and other relevant tax data.

10. Save and back up the completed report.

11. Submit the prepared VAT zero declaration report to the relevant tax authority in accordance with the regulations of your country/region. Usually, you can find detailed submission guidelines and requirements on the website of the tax authority in your location.

Please note that the specific steps and requirements for VAT zero declaration may vary from country/region to country/region. It is recommended that you consult the guidelines of the local tax authority or consult a professional tax advisor before making a VAT zero declaration to ensure that you fulfill your tax obligations correctly.