> For the complete documentation index, see [llms.txt](https://crushsuite.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://crushsuite.gitbook.io/docs/compliance/troubleshooting/tax-calculation-issues.md).

# Tax Calculation Issues

If customers are being charged incorrect taxes — or if taxes aren't showing up at checkout — this guide helps you identify and fix the problem.

### Symptoms

* No tax charged at checkout
* Incorrect tax amounts
* Missing alcohol fees
* Tax charged on non-taxable items

### Common Causes and Solutions

#### Shopify sales tax not configured

Standard sales tax isn't being collected.

1. Go to Shopify **Settings** → **Taxes and Duties**.
2. Verify all selling states are added.
3. See Setting Up Shopify Sales Tax →.

#### Tax on shipping not enabled

Vinoshipper charges tax on shipping, so Shopify must too.

1. In **Taxes and Duties** → **Global Settings**, check "Charge sales tax on shipping."
2. Save.

#### State alcohol fees not configured

Alcohol-specific fees are separate from sales tax.

1. Check **Compliance** → **Manage State Compliance Fee**.
2. Verify fees are enabled for the correct states.
3. See Setting Up State Alcohol Fees →.

#### Product volume not set

Alcohol fees are calculated per 750ml equivalent. If a product's volume is missing, fees can't be calculated correctly.

1. Check the product's compliance data in CrushSuite.
2. Enter the correct volume in milliliters.