Independent review. IonBin has no partnership with FreeTaxUSA and was not paid for this page. Our evaluation is our own, based on public documentation and our research. Product names are trademarks of their owners and are used for identification only. How disclosure works.
Online tax filing software. As of 2026-10-17 (2025 returns): federal return $0, each state return $15.99, optional Deluxe support $7.99. Not supported: 1040NR returns, Form 2555 foreign income or filers living abroad. Imports W-2, 1099 and prior-year PDFs; you e-file yourself.
First-hand IonBin’s founder filed a 2024 tax return with FreeTaxUSA.
What it handles (checked 2026-10-17 on FreeTaxUSA’s site):
IonBin provides general information and software comparisons, not tax, legal, accounting or financial advice. Tax and legal rules vary by situation and jurisdiction; consult a qualified professional (CPA, enrolled agent or attorney) before acting.
AI tools can make mistakes. Verify every figure against the original documents and official IRS or state guidance before filing or signing.
Redact Social Security numbers, account numbers and EINs before uploading documents to any AI assistant, and check its data-retention settings. Upload originals only to the filing or signing software.
“Free” offers come with conditions: check who qualifies and what state filing costs before you start. IRS Direct File is discontinued for the 2026 season with no relaunch date; see IRS Free File for eligible filers.
How FreeTaxUSA connects to each AI platform: native connector or MCP, API through code the agent writes, browser control, or file upload.
| Platform | MCP / connector | API (agent-written code) | Browser | Upload / export |
|---|---|---|---|---|
| Claude (incl. Claude Code) | No documented route | No documented route | Confirmed Claude Code with the Claude in Chrome extension (Chrome, Edge and other Chromium browsers) Claude (incl. Claude Code) browser docs ↗ | Confirmed Export from FreeTaxUSA, then works on the files in your project; chat accepts attachments Claude (incl. Claude Code) docs ↗ |
| OpenAI Codex | No documented route | No documented route | Confirmed Only in the ChatGPT desktop app; not in the Codex CLI or IDE extension OpenAI Codex browser docs ↗ | Confirmed Export from FreeTaxUSA, then works on local repositories OpenAI Codex docs ↗ |
| Google Antigravity | No documented route | No documented route | Confirmed Browser subagent via /browser, documented as an Antigravity App feature; the IDE has separate browser docs Google Antigravity browser docs ↗ | Confirmed Export from FreeTaxUSA, then works on local projects and worktrees Google Antigravity docs ↗ |
Confirmed means both the tool's and the platform's official docs describe that route (links in the cell); IonBin has not tested every pairing. Not documented means it may work, but no official docs describe that route end to end. Checked Oct 17, 2026.
| Level | Status | Detail / source |
|---|---|---|
| Native connector / MCP | No | No FreeTaxUSA API or MCP server found (2026-10-17). AI tools prepare checklists; filing happens in the browser. |
| API / CLI | No | No public API found (2026-10-17) |
| Browser-only | Yes | No confirmed MCP server or API yet |
| Bulk upload / import | Yes | W-2, 1099 and prior-year return PDF import: https://www.freetaxusa.com/import/ |
Recorded Oct 17, 2026. Setup and plan limits vary; check the vendor's docs. How levels are assigned.
No confirmed MCP server yet.
No long-form review yet. IonBin’s founder filed a 2024 tax return with FreeTaxUSA. A first-hand review is planned.
Guided tax filing from Intuit with expert options. As of 2026-10-17: DIY federal $0 to $139 (Free Edition for simple 1040s, ~37% qualify), expert sign-and-file $59 to $209, full service from $129; states extra. A ChatGPT app estimates refunds and builds checklists.
Online tax filing for individuals and small businesses. As of 2026-10-17: Free federal $0, Deluxe $59.99, Premier $99.99, Self-Employed $109.99, states extra. Imports prior-year PDF returns; no AI integration found, so you file in the browser.
Online tax filing with Simply Free, Classic, Premium and Self-Employed tiers. As of 2026-10-17: federal $0 to $74.99, states $47.99 each; Simply Free has eligibility limits. Imports prior-year 1040 PDFs; no AI integration found.
