Deadline
File Your Extension — April 15, 2026
File Extension — April 15
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SecIn Development
Tax infrastructure via API.
The TaxWallet developer API is under active development — giving platforms, fintechs, and software companies direct access to filing, payments, refund tracking, and bank product workflows.
What's coming
RESTful API
Clean, well-documented endpoints for filing, payments, and refund data.
Webhooks
Real-time event notifications for return status, acceptance, and refund delivery.
OAuth 2.0 auth
Secure token-based authentication with scoped permissions per integration.
Full documentation
SDKs, sandbox environment, and comprehensive docs for every endpoint.
SOC 2 compliant
Bank-level encryption
IRS authorized
2,000+ professionals