Tax filing, as a tool call.
We are building MCP and API infrastructure so software and AI agents can prepare and transmit U.S. federal tax returns to the IRS. The service is not live yet. Join the waitlist and we will email you when access opens.
Get early accessValidate before you file
Planned pre-submission checks against published IRS business rules, so common errors are caught early.
Built for agents and firms
Planned MCP tools and a REST API for AI agents, accounting platforms and payroll systems.
Employment tax first
We plan to offer Forms 941 and 944 first, with the business extension Form 7004 to follow; more forms later. Timelines depend on IRS approvals.
What it could look like
// Illustrative example only. This is not a live service.
const result = await mcp.submit_return({
form: "941",
quarter: "2026-Q2",
ein: "XX-XXXXXXX"
});Planned interface. Names, parameters and responses will change. Pricing will be announced at launch.
Guides
Primary-source explainers on how IRS e-file works, written while the service is not live. They are not an offer to file.
- How software can e-file Form 941: what the IRS requires: The IRS process, step by step, from IRS sources.
- Why AI agents that prepare returns still need an IRS provider: Why preparing a return and transmitting one are different jobs.
- What an IRS-facing MCP tool has to get right: a checklist: Six checks for MCP tools that send filings to a tax authority.
- Docs for the mock MCP server: try the planned tool calls against a mock that does not file with the IRS.
- What is efile.technology?: status, plans and what it is not.
Frequently asked questions
- Is efile.technology live?
- No. The service is not live. Today the site only describes our plans and lets you join an early-access waitlist. We cannot file returns for anyone yet, and the code example on this page is illustrative only.
- Is efile.technology an IRS-authorized e-file provider?
- Partly. The IRS has accepted Terragroupe, LLC as an e-file provider (Electronic Return Originator, Transmitter and Software Developer). We are preparing for IRS testing and have not been approved to transmit returns, so we cannot file returns for anyone yet. Acceptance as a provider is not IRS approval or endorsement of our software. We are not affiliated with, endorsed by, or acting on behalf of the IRS. If our status changes we will update this page. How the IRS authorizes e-file providers (irs.gov)
- Which tax forms are planned?
- We plan to offer Forms 941 and 944 first, with the business extension Form 7004 to follow; more forms later. Form coverage and timelines are plans, not commitments, and depend on IRS approvals and software testing. How software can e-file Form 941 and what the IRS requires
- How do I join the waitlist?
- Use the form below. Developers and AI-agent builders need only an email address. Firms and platforms also give a company name and an estimated filing volume. Do not enter tax IDs or return data. Joining does not guarantee access or reserve a price. Go to the waitlist form
- What happens to my data if I join the waitlist?
- We store your email, signup type and, for firms, company name and estimated volume, plus your IP address and browser user-agent for abuse prevention. We do not sell personal information. We do not collect tax returns or taxpayer data through this site. Read the Privacy Policy
New here? Read what efile.technology is.