> For clean Markdown of any page, append .md to the page URL. > For a complete documentation index, see https://docs.taxcloud.com/api-v-1/llms.txt. > For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.taxcloud.com/_mcp/server. Automate Sales Tax\ Calculations ============ Access a powerful API for real-time sales tax calculation, compliance, and reporting across the United States. [Get Started β†’](guides) [Create Account](https://app.taxcloud.com/register) ### πŸ—ΊοΈ Nationwide Coverage Accurate tax rates for over 11,000 jurisdictions across the US ### ⚑ Real-Time Calculations Instant and accurate sales tax calculations for every transaction ### πŸ“¦ Product Categories Extensive product taxability mapping across jurisdictions ### βœ… Automated Compliance Simplified tax compliance and reporting tools ### πŸ”’ Secure & Certified Certified Streamlined Sales Tax (SST) service provider ### πŸ› οΈ Developer-First Simple REST API integration with comprehensive documentation ## Getting Started #### [API Reference](/api-reference) #### [Developer Guides](guides) #### [Support](https://support.taxcloud.com/article/148-taxclouds-service-level-agreement) #### [Dashboard](https://app.taxcloud.com/) Quick Integration Example ```javascript const axios = require('axios'); const connectionId = 'your_connection_id'; const apiKey = 'your_api_key'; const endpoint = `https://api.v3.taxcloud.com/tax/connections/${connectionId}/carts`; // Set the headers const headers = { 'X-API-KEY': apiKey, 'Content-Type': 'application/json', }; const payload = { items: [ { customerId: 'cus_12345', currency: { currencyCode: 'USD' }, origin: { line1: '323 Washington Ave N', city: 'Minneapolis', state: 'MN', zip: '55401', }, destination: { line1: '123 Main St', city: 'Los Angeles', state: 'CA', zip: '90001', }, lineItems: [ { index: 0, itemId: 'sku_001', price: 100.0, quantity: 2, tic: 40030, }, { index: 1, itemId: 'sku_002', price: 50.0, quantity: 1, tic: 20010, }, ], }, ], }; async function createCart() { try { const response = await axios.post(endpoint, payload, { headers }); console.log('Cart created successfully:', response.data); } catch (error) { if (error.response) { console.error('Error creating cart:', error.response.status, error.response.data); } else { console.error('Error:', error.message); } } } createCart(); ``` ## Security and Compliance TaxCloud is a Certified Service Provider (CSP) under the Streamlined Sales and Use Tax Agreement (SSUTA). We maintain strict security standards and regularly update our systems to ensure accurate tax calculations based on current tax laws and rates. ## Next Steps Ready to start integrating? Check out our [Quick Start Guide](/guides) or dive into the [API Reference](/api-reference) for detailed endpoint documentation. ## Support Need help with your integration? Our support team is here to assist: * Email: [service@taxcloud.net](mailto:service@taxcloud.net) * [Documentation](https://docs.taxcloud.com/guides/getting-started/welcome-to-tax-cloud-api) ## Docs - [Overview](https://docs.taxcloud.com/api-v-1/guides/getting-started/overview.md) - [How TaxCloud Works](https://docs.taxcloud.com/api-v-1/guides/getting-started/how-tax-cloud-works.md) - [Migrating from API v1 to v3](https://docs.taxcloud.com/api-v-1/guides/getting-started/migrating-from-api-v-1-to-v-3.md): A practical guide for developers migrating their TaxCloud integration from the legacy v1 API to the current v3 REST API. - [Getting Started with TaxCloud Integration](https://docs.taxcloud.com/api-v-1/guides/integration-basics/getting-started-with-tax-cloud-integration.md) - [Verify an Address](https://docs.taxcloud.com/api-v-1/guides/api-guides/verify-an-address.md) - [Lookup Sales Tax](https://docs.taxcloud.com/api-v-1/guides/api-guides/lookup-sales-tax.md) - [Complete an Order](https://docs.taxcloud.com/api-v-1/guides/api-guides/complete-an-order.md) - [Understanding Returns and Sales Tax](https://docs.taxcloud.com/api-v-1/guides/api-guides/handle-returns/understanding-returns-and-sales-tax.md) - [Returned API Basics](https://docs.taxcloud.com/api-v-1/guides/api-guides/handle-returns/returned-api-basics.md) - [Advanced Returns](https://docs.taxcloud.com/api-v-1/guides/api-guides/handle-returns/advanced-returns.md) ## API Docs - Legacy API Reference > API V1 > Essentials [Ping](https://docs.taxcloud.com/api-v-1/api-reference/legacy-api-reference/api-v-1/essentials/ping.md) - Legacy API Reference > API V1 > Essentials [Verify Address](https://docs.taxcloud.com/api-v-1/api-reference/legacy-api-reference/api-v-1/essentials/verify-address.md) - Legacy API Reference > API V1 > Essentials [Lookup](https://docs.taxcloud.com/api-v-1/api-reference/legacy-api-reference/api-v-1/essentials/basic-lookup.md) - Legacy API Reference > API V1 > Essentials [Authorized with Capture](https://docs.taxcloud.com/api-v-1/api-reference/legacy-api-reference/api-v-1/essentials/basic-auth-cap.md) - Legacy API Reference > API V1 > Essentials [Returned](https://docs.taxcloud.com/api-v-1/api-reference/legacy-api-reference/api-v-1/essentials/basic-returned.md) - Legacy API Reference > API V1 > Advanced [Lookup for Date](https://docs.taxcloud.com/api-v-1/api-reference/legacy-api-reference/api-v-1/advanced/date-lookup.md) - Legacy API Reference > API V1 > Advanced [Authorized](https://docs.taxcloud.com/api-v-1/api-reference/legacy-api-reference/api-v-1/advanced/basic-authorized.md) - Legacy API Reference > API V1 > Advanced [Captured](https://docs.taxcloud.com/api-v-1/api-reference/legacy-api-reference/api-v-1/advanced/basic-captured.md) - Legacy API Reference > API V1 > Advanced [Returned Pro](https://docs.taxcloud.com/api-v-1/api-reference/legacy-api-reference/api-v-1/advanced/pro-returned.md) - Legacy API Reference > API V1 > Exemption Certificates [Add Exemption Certificate](https://docs.taxcloud.com/api-v-1/api-reference/legacy-api-reference/api-v-1/exemption-certificates/add-exemption-cert.md) - Legacy API Reference > API V1 > Exemption Certificates [Get Exemption Certificates](https://docs.taxcloud.com/api-v-1/api-reference/legacy-api-reference/api-v-1/exemption-certificates/get-exemption-certificates.md) - Legacy API Reference > API V1 > Exemption Certificates [Delete Exemption Certificate](https://docs.taxcloud.com/api-v-1/api-reference/legacy-api-reference/api-v-1/exemption-certificates/delete-exemption-certificate.md) - Legacy API Reference > API V1 > Ti Cs [Get all TICs](https://docs.taxcloud.com/api-v-1/api-reference/legacy-api-reference/api-v-1/ti-cs/get-all-tics.md) - Legacy API Reference > API V1 > Ti Cs [Get TIC Groups](https://docs.taxcloud.com/api-v-1/api-reference/legacy-api-reference/api-v-1/ti-cs/get-tic-groups.md) - Legacy API Reference > API V1 > Ti Cs [Get TICS by Group](https://docs.taxcloud.com/api-v-1/api-reference/legacy-api-reference/api-v-1/ti-cs/get-tics-by-group.md) - Legacy API Reference > API V1 > Partners [Create Platform Account](https://docs.taxcloud.com/api-v-1/api-reference/legacy-api-reference/api-v-1/partners/create-platform-account.md) - Legacy API Reference > API V1 > Partners [Get Locations](https://docs.taxcloud.com/api-v-1/api-reference/legacy-api-reference/api-v-1/partners/get-locations.md) - Legacy API Reference > API V1 > Partners [Add Transactions](https://docs.taxcloud.com/api-v-1/api-reference/legacy-api-reference/api-v-1/partners/add-transactions.md) ## OpenAPI Specification The raw OpenAPI 3.1 specification for this API is available at: - [OpenAPI JSON](https://docs.taxcloud.com/api-v-1/openapi.json) - [OpenAPI YAML](https://docs.taxcloud.com/api-v-1/openapi.yaml)