1. Legal liability: According to relevant laws and regulations, taxpayers are obliged to respond positively to the investigation letter from the tax authorities. If you choose not to reply or deliberately refuse to provide the corresponding information, you will face legal consequences such as fines, late fees and even criminal penalties.

2. Adverse tax treatment: The tax authorities will estimate, adjust or review the tax return according to the failure to reply. This leads to being required to pay higher taxes or bear other related tax liabilities.

3. Bad credit record: Failure to reply to the investigation letter from the tax authorities will affect the credit record and business reputation. This will have a negative impact on loans, loans, licenses, etc.