Overview

TaxBandits API is a purpose-built tax compliance API designed for software platforms that need to automate tax workflows at scale. It provides the infrastructure to manage the full compliance lifecycle — entity management, withholding certificate collection, TIN validation, federal and state e-filing, recipient distribution, and real-time status tracking — directly within your application.

This documentation covers everything you need to integrate, test, and go live — including endpoint references, sample requests and responses, workflow guides, and migration resources.

Forms & Services

TaxBandits API supports all major IRS tax forms. For the complete list, click here.

Form / Service	Description
W-9/W-8 Collection	Collect W-9, W-8BEN, W-8BEN-E, W-8EXP, W-8ECI, or W-8IMY from recipients via email, SMS, shareable URL, embeddable Drop-In UI, or direct upload.
TIN Matching	Validate recipient TINs against the IRS database before filing. Supports standard, bulk, KYC, and KYB verification.
1099 Forms	E-file 1099-NEC, 1099-MISC, 1099-K, and other 1099 forms with the IRS. Supports state filing, corrections, and recipient copy distribution via postal mail or online access.
W-2 Forms	E-file W-2 and W-2C forms with the SSA. Supports state filing, corrections, and recipient copy distribution via postal mail or online access.
1042/1042-S	E-file Form 1042 and Form 1042-S with the IRS. Supports corrections and recipient copy distribution.
94x Forms	E-file 941, 940, 943, 944, and 945 payroll tax returns with the IRS, including Schedule R for aggregate filers.
ACA Forms	E-file 1094-C, 1095-C, 1094-B, and 1095-B with the IRS. Supports corrections and recipient copy distribution.
5498 Forms	E-file 5498, 5498-SA, and 5498-ESA with the IRS for retirement and health savings account reporting.
Extension Forms	E-file Forms 8809, 7004, 4868, 8868, and 15397 to request filing extensions with the IRS.
State Payroll Forms	File state withholding reports, unemployment insurance returns, and new hire reports with state agencies.

Built-In Tools to Power Your Integration

Everything you need to build, automate, and manage your tax compliance workflow in one place.

Zapier Integration

Connect TaxBandits workflows to thousands of apps without writing code. Automate W-9 requests, filing triggers, and status updates across your existing tools.

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Remote MCP Server

Trigger tax workflows through AI models using plain language instructions, powered by the Model Context Protocol — no direct API calls needed.

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Portal and Email Customization

Customize the recipient-facing portal and email communications with your own branding, colors, and messaging.

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Team Management

Manage multi-user access within your TaxBandits integration. Assign roles and permissions to team members across your organization.

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Webhooks

Receive real-time event notifications for form status updates, transmission results, and recipient actions — without polling the API.

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Sandbox Environment

Test your full integration in a simulated environment before going live, with support for all endpoints and form types.

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Getting Started with TaxBandits API

1. Sandbox Development & Testing

   Create a free Sandbox account at sandbox.taxbandits.com. Provide your business details, contact information, the forms you plan to file, and your use case. Use the Sandbox environment to build, test, and simulate the full e-filing workflow before going live.

2. Request to Go Live

   When development and testing are complete, submit a Go Live request from your Sandbox console. You will complete a questionnaire and confirm a pre-go-live checklist. TaxBandits will review your API request and response logs before approving production access. Reach out to the sales team at this stage to finalize pricing and licensing.

3. Go Live

   Once your License Agreement is signed, you will receive production console credentials. Whitelist your IPs or domains, obtain your live JWT token, and point your integration to the TaxBandits Live API URLs.