Find out what your company actually has to file.
A free server your assistant can call, plus an open-source skill that goes looking through your own documents for evidence you have already filed. Every rule carries the government page it came from and the date we last checked it.
No signup, no API key, no account. Your documents stay on your machine.
Why this exists
On 2026-08-11 FinCEN permanently ended beneficial ownership reporting for US companies and started deleting the data it had collected. Almost every compliance checklist on the internet, and most AI assistants, still tell founders to file it.
That is the whole problem in one example. Rules move, and anything with the rules baked into it goes stale silently. Keeping them on a server means a correction lands in one place and reaches everyone who asks after it, which is why the part that matters here is the server rather than the skill.
Adding it to your assistant
The server carries the rules and is the part that matters. The skill teaches your assistant how to search your own files for evidence, and is optional.
The server
https://medianfi.com/mcp
| Where you are | Add the server | Add the skill |
|---|---|---|
| Claude desktop or claude.ai | Settings, then Connectors, then Add custom connector, paste the URL | Download the repo as a ZIP and upload it under Customize, then Skills |
| Claude Code | claude mcp add --transport http --scope user median https://medianfi.com/mcp | npx skills add https://github.com/median-labs/median-compliance-skill |
| ChatGPT | Settings, then Connectors, then Add | Not supported. The server on its own still works |
Add the server before you start the session you plan to use it in. A connector added partway through does not appear until the client reloads, and an assistant that cannot reach the rules will answer from its own training data instead, which is the failure this project exists to prevent.
Then ask it, naming the company: Check whether Acme Robotics Inc is up to date on its filings. Name it even when it is the only company you own, since your assistant can see every entity whose paperwork has passed through your machine.
Some things most sources get wrong
Each of these was corrected against the government’s own page during three rounds of independent fact-checking, which changed about a third of what single-source research first produced.
Beneficial ownership reporting is over for US companies
FinCEN ended it by final rule on 2026-08-11 and began deleting the data it had collected. If you get an invoice to file or renew a BOI report, you do not need it. Most checklists online still say to file, and so do most assistants answering from training data.
The corporate and pass-through extensions get swapped constantly
A calendar-year C corporation extends to October 15. A partnership or S corporation extends to September 15. Reading the statute alone produces the wrong answer for the C corporation, because Treasury grants a flat six months by regulation.
Delaware franchise tax is usually calculated the expensive way
You are allowed to recalculate using the assumed par value capital method. For a startup with many authorized shares and few assets, that can turn a five-figure bill into a few hundred dollars.
New Jersey’s Corporate Transit Fee is a cliff
Once taxable net income crosses $10 million the 2.5% applies to the whole amount rather than the excess, so $10.1 million owes roughly $252,000 instead of $2,500.
Georgia’s corporate rate is 4.99% for 2026
Set by HB 463, signed May 2026. The Department of Revenue’s own corporate page is stale at 5.19%.
A virtual mailbox in a state is not doing business there
Where your people are is what decides foreign qualification. This one costs founders real money in both directions, registering where they did not need to and skipping where they did.
What it covers, and where it stops
156 obligations across 13 jurisdictions: US federal, plus the twelve states below. Entity types run from C corporation and S corporation through LLC, single-member LLC including foreign-owned, partnership, benefit corporation and nonprofit. Categories run from entity filings and registered agents through income and franchise tax, payroll, unemployment, workers compensation, sales tax and information returns.
Covered states
- California
- Colorado
- Delaware
- Florida
- Georgia
- Illinois
- Massachusetts
- New Jersey
- New York
- Pennsylvania
- Texas
- Washington
Every other state is reported as not covered, with a link to that state’s Secretary of State and tax authority. That is deliberate. An invented rule is worse than an honest gap, and a tool that answered all fifty states by inference would look complete while quietly making things up.
Federal obligations apply wherever you are, so the tool is worth running even when your state is not on that list.
Get a reminder before each deadline
Tell us your entity type and where you operate and we will email the filing deadlines that apply, then one reminder before each one. Nothing else. The list comes from the same rules the checker uses, so it does not go stale in your inbox.
We'll only email you about this. Unsubscribe anytime.
This is a checklist and a reminder, not advice, and it never tells you that you are compliant. Every item links to the government page it came from.
Tell us which state to add next
Requests decide the order we build in. We will email you once, when yours is covered. No date promised, because we would rather not give you one we cannot hold.
We'll only email you about this. Unsubscribe anytime.
Common questions
If it finds something in your books instead
Filing problems and bookkeeping problems tend to arrive together. We do a free 20-minute teardown: share accountant access to QuickBooks or Xero and we will tell you what is actually wrong, ranked, whether or not you work with us.
See the teardown