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## Resource: Introduction

## Article: About Tax

## Article Link: https://dev.wix.com/docs/api-reference/business-solutions/e-commerce/extensions/tax/introduction.md

## Article Content:

# About Tax

Tax functionality enables businesses to implement accurate, compliant tax calculations that adapt to complex regional requirements, business rules, and integration with external tax services. The tax system supports both built-in tax calculations and integration with specialized tax providers to ensure proper tax handling across different jurisdictions and business scenarios.

This section covers:

- **[Tax Calculation API](https://dev.wix.com/docs/rest/business-solutions/e-commerce/extensions/tax/tax-calculation/introduction.md)**: Retrieve available tax calculators and perform tax calculations using configured tax providers.
- **[Tax Calculation Integration Service Plugin](https://dev.wix.com/docs/api-reference/business-solutions/e-commerce/extensions/tax/tax-calculation-integration-service-plugin/introduction.md)**: Integrate custom tax calculation services with the eCommerce platform for specialized tax logic and external tax provider connectivity.
- **[Tax Groups Integration Service Plugin](https://dev.wix.com/docs/api-reference/business-solutions/e-commerce/extensions/tax/tax-groups-integration-service-plugin/introduction.md)**: Create and manage default tax groups for your app's catalog products based on distinct tax treatments.
- **[Tax Regions API](https://dev.wix.com/docs/api-reference/business-solutions/e-commerce/extensions/tax/tax-regions/introduction.md)**: Define and manage tax regions to specify geographical areas with specific tax rules and rates.

## Tax calculation approaches

Choose the approach that best meets your tax compliance and calculation requirements:

+ **Built-in tax calculations**: Use Wix's standard tax calculation functionality for basic tax scenarios with straightforward regional tax rates and rules.

+ **External tax service integration**: Connect with specialized tax services through the Tax Calculation service plugin for complex multi-jurisdictional compliance, real-time rate updates, and automated tax filing support.

+ **Custom tax logic**: Implement business-specific tax calculations for unique scenarios like tax-exempt customers, special product categories, or custom tax rules that require specialized business logic.

## Tax system integration

Tax calculations are integrated throughout the eCommerce flow:

+ **Real-time calculation**: Tax amounts are calculated and updated in real-time as customers modify their carts, change shipping addresses, or update checkout information.

+ **Multi-jurisdictional support**: Tax calculations can account for different tax rates and rules based on customer location, business location, product types, and applicable tax jurisdictions.

+ **Tax group management**: Products and customers can be organized into tax groups that define specific tax treatment, exemptions, or special rates based on business requirements or regulatory compliance.

+ **Compliance automation**: Integration with external tax services can provide automated compliance features including tax filing, reporting, and regulatory updates.

## See also

- [About Extensions](https://dev.wix.com/docs/rest/business-solutions/e-commerce/extensions/introduction.md)
- [About Purchase Flow](https://dev.wix.com/docs/rest/business-solutions/e-commerce/purchase-flow/introduction.md) 
- [Extend the eCommerce Platform with Service Plugins](https://dev.wix.com/docs/rest/business-solutions/e-commerce/guides/extend-the-e-commerce-platform-with-service-plugins.md)