# Avalara AvaTax MCP > Avalara AvaTax MCP automates global transaction tax compliance. Calculate sales taxes in real time across any jurisdiction, validate addresses for precision, and manage the entire lifecycle of a tax transaction using natural language commands via your AI client. ## Overview - **Category:** industry-titans - **Price:** Free - **Tags:** tax-compliance, sales-tax, address-validation, tax-calculation, nexus-management, transaction-recording ## Description Managing sales tax shouldn't feel like running a dozen different databases just to figure out what customers actually owe. This MCP connects directly to Avalara AvaTax, letting you handle global compliance through conversation. Your agent can instantly calculate precise sales tax rates for any physical address and transaction details worldwide. Need to validate if an address is even usable? You can run a full address resolution check first. Beyond calculation, this tool lets your AI client manage the entire accounting process: record new transactions into your ledger, void incorrect ones, or mark finalized deals as committed. It's about taking complex tax law and turning it into simple commands you talk to your agent. Because Vinkius hosts this MCP, you get access to all these critical functions—address validation, transaction creation, nexus auditing, and more—all in one place. ## Tools ### commit_transaction Marks a specific tax transaction as finalized for official reporting purposes. ### create_transaction Calculates the necessary sales tax and records a new, complete sale transaction in your account. ### get_account_check Runs a basic check to verify that your AvaTax account connection is active and working correctly. ### get_company Retrieves detailed information about a specific company registered in the AvaTax system. ### get_tax_rates_by_address Pulls the accurate sales tax rates for any physical address you provide, giving you immediate rate details. ### get_transaction Looks up and retrieves all stored data for a specific transaction using its unique code. ### list_companies Generates a list of every company profile currently set up within your AvaTax account. ### list_nexus Shows all tax nexus settings for a specific business, letting you see where you are obligated to collect taxes. ### resolve_address Validates and cleans up a physical address, providing the most accurate location data possible. ### void_transaction Cancels or voids an existing transaction record if it needs to be reversed or corrected. ## Prompt Examples **Prompt:** ``` Resolve the following address: '2000 Main St, Irvine, CA 92614'. ``` **Response:** ``` I've resolved the address. It is a valid physical location: 2000 Main St, Irvine, CA, 92614-7223, US. The jurisdiction codes have been identified for accurate tax calculation. Shall I proceed with a tax quote for this location? ``` **Prompt:** ``` List all active nexus settings for my company 'MainStore'. ``` **Response:** ``` I've retrieved the nexus list for 'MainStore'. You currently have active tax obligations in 5 jurisdictions, including California, New York, and Texas. Would you like to see the specific effective dates for each? ``` **Prompt:** ``` Calculate sales tax for a $100.00 purchase from Seattle to New York. ``` **Response:** ``` Based on the origin (Seattle) and destination (New York), the total sales tax for a $100.00 purchase is $8.88. This includes the state, city, and special district taxes. Would you like me to record this transaction in your AvaTax ledger? ``` ## Capabilities ### Calculate accurate tax rates Determine the exact sales tax amount for any given purchase based on origin and destination. ### Validate and resolve addresses Check if a provided physical address is real, valid, and properly formatted for tax calculation. ### Manage transaction status Create new transactions to record sales tax or void existing ones if an order changes. ### Audit company compliance settings List and review your current business nexus settings and associated tax obligations in different states. ### Retrieve transaction history Fetch specific details for a past or pending transaction using its unique code. ## Use Cases ### Fulfilling an e-commerce order with unknown addresses The ops manager needs to ship an item but only has a partial address. They ask their agent to run resolve_address first, which confirms the full street number and zip code. Next, they tell the agent to calculate the tax rates for that specific validated location using get_tax_rates_by_address before marking it as ready to fulfill. ### Correcting a recorded sale after an error An accountant realizes a sales transaction was entered with the wrong state code. They ask their agent to retrieve the original record using get_transaction, and then immediately use void_transaction to cancel it cleanly. Finally, they repeat the process correctly. ### Reviewing company tax obligations A financial controller needs to know if a new market requires updating local taxes. They ask their agent to list all nexus settings using list_nexus and then request details on specific subsidiaries by calling get_company, ensuring compliance before expansion. ### Processing a batch of complex sales The team processes 50 new orders. Rather than manually entering data for each one, they instruct the agent to calculate tax and record every sale using create_transaction, streamlining the entire compliance process in minutes. ## Benefits - Avoid manual data entry errors. Instead of looking up tax tables in a spreadsheet, simply ask your agent to calculate the rate for any origin/destination pair using get_tax_rates_by_address. - Guarantee accurate billing by running address validation first. Using resolve_address ensures that even if a customer misspells their zip code, you'll have the precise location data needed for tax calculation. - Streamline the entire accounting workflow. After calculating taxes, use create_transaction to record it immediately or void_transaction if the sale falls through, all without leaving your chat window. - Maintain legal compliance with confidence. You can audit your operational footprint by listing nexus settings and reviewing company details using list_nexus and get_company. - Faster debugging for developers. Instead of running multiple API calls to check a record, you can ask your agent to get the transaction details directly using get_transaction. ## How It Works The bottom line is you stop opening multiple tabs or running API calls manually; your agent just talks to AvaTax on your behalf. 1. Subscribe to this MCP and provide your AvaTax Username (Account ID) and Password (License Key). 2. Your AI client authenticates the connection and verifies that the tax account is active. 3. You issue a natural language command, like 'Calculate sales tax for 10 items shipped from Miami to Denver,' and receive the precise tax breakdown. ## Frequently Asked Questions **How do I check my AvaTax account status using Avalara AvaTax MCP?** You use get_account_check. This tool immediately verifies that your connection to the tax platform is active and ready for transactions. **What if a customer gives me an invalid address when I need to calculate taxes with Avalara AvaTax MCP?** Run resolve_address first. It validates the physical location, ensuring you have usable data before proceeding to get_tax_rates_by_address. **Can I list all my tax obligations using the Avalara AvaTax MCP?** Yes, use list_nexus. This tool shows every active tax obligation your company has across different jurisdictions. **How do I handle a return or cancellation with Avalara AvaTax MCP?** You can first get the transaction details using get_transaction to find the original record, and then use void_transaction to cleanly reverse it in your ledger. **Is this only for US tax rates with Avalara AvaTax MCP?** No. The platform supports global jurisdiction calculations, meaning you can calculate sales taxes for many countries beyond the United States.