1. If the e-invoice issued involves more than one commodity or service and the tax rate of each commodity or service is not the same, you need to fill in the tax rate according to the actual tax rate of each commodity or service.

2. If the e-invoice involves only one commodity or service, and the tax rate of that commodity or service is a specific rate, you only need to fill in the tax rate column for that tax rate.

3. If the e-invoice involves more than one commodity or service, but the same tax rate is applied uniformly, the tax rate can be filled in the tax rate column.

It should be noted that the tax rate should be filled in according to the relevant national tax laws, tax regulations and invoice management requirements to ensure that the tax rate is filled in accurately.