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Pass-through tax rules

MCP server · hosted · v0.2.0 · com.passthroughtax/pass-through-tax-rules
Online · tested 34m agoNEW · 1h agoSeen in the registry 55m ago

Cited, tax-year-dated rules for state PTET, the federal SALT cap, and bonus-depreciation conformity.

Website ↗How to connect ↓

What it does

Pass-through tax rules is an MCP server, a connector that lets an AI assistant use it as a tool. It is hosted: an assistant connects to it over the internet, nothing to install.

No capability identified yet from its description.

Facts come from the Official MCP Registry, as declared by the publisher. Capabilities are matched automatically (low confidence). None of this is a test of the tool.

At a glance

Hosted (remote)YES
Local installNO
Version0.2.0
PriceNot in the registry
First seen24 Oct 2026
Last checked55m ago

How to connect

As declared in the Official MCP Registry · hosted endpoint tested by Electra Index 34m ago (live check)

Hosted endpoint

  • https://passthroughtax.com/api/mcp streamable-http

In Claude Code: claude mcp add --transport http pass-through-tax-rules-1 https://passthroughtax.com/api/mcp

MCP settings (Claude Desktop, Cursor and other MCP clients)

{
  "mcpServers": {
    "pass-through-tax-rules-1": {
      "url": "https://passthroughtax.com/api/mcp"
    }
  }
}

Live check

Electra Index connected to the hosted endpoint 34m ago

ONLINE Pass-through tax rules answered an MCP connection on 24 Oct 2026 and introduced itself as pass-through-tax-rules 0.2.0 (MCP protocol 2025-06-18).

4 tools offered to AI assistants

  • ptet_rules · Elective pass-through entity tax for one state and tax year: eligibility, who elects, deadline, rate, owner credit or exclusion, estimates, and sunset. Returns not_covered when this server has no file. Informational, not tax advice.
  • salt_cap · Compute the federal SALT deduction cap under 26 USC 164(b)(6) and (b)(7) for a tax year, filing status, and modified adjusted gross income. Returns the cap and the steps, not the deduction. Years before 2018 are not_covered. MAGI is used to
  • bonus_conformity · Whether a state conforms to IRC 168(k) bonus depreciation and IRC 179 for a tax year, its IRC conformity date, and the add-back or subtraction in plain terms. Unverified fields are null. Unknown states and years are not_covered.
  • coverage · List jurisdictions and tax years in this dataset. elective_ptet_2026 counts only 2026 files with an elective PTET. no_elective_ptet_2026 and not_effective_2026 are separate and are not PTET states for 2026.

What "online" means: the server answered an MCP connection at the time of the check. It is not a guarantee of security, quality or continuous uptime. How we test: we open an MCP session and ask for the tool list, as an AI assistant would. We never run a tool and never send a key. Checked every few days. Method

Is this your server? Monitoring Pro: a check every 30 minutes and an email within the hour when it stops answering. Launch offer: $39.99 once, for life.

Facts & evidence

Each fact shows where it was seen and when.
FactValueEvidenceSourceLast confirmed
Hosted endpointhttps://passthroughtax.com/api/mcpDECLAREDSRC-001 Official MCP Registry55m ago
Local install (package)noDECLAREDSRC-001 Official MCP Registry55m ago
Remote access (hosted)yesDECLAREDSRC-001 Official MCP Registry55m ago
Websitehttps://passthroughtax.comDECLAREDSRC-001 Official MCP Registry55m ago
Registry statusactiveDECLAREDSRC-001 Official MCP Registry55m ago
Version0.2.0DECLAREDSRC-001 Official MCP Registry55m ago
MCP serveryesDECLAREDSRC-001 Official MCP Registry55m ago

Change history

  • NEW24 Oct 2026
    first seen in the index

Is this page accurate?

Flag it and our robot re-checks the official source. Reports never change a score.

Questions about Pass-through tax rules

How do I connect Pass-through tax rules?

Use the hosted endpoint https://passthroughtax.com/api/mcp in your assistant's MCP settings. The exact settings are in "How to connect" above, as declared in the Official MCP Registry.

What tools does Pass-through tax rules offer?

When Electra Index connected on 24 Oct 2026, it listed 4 tools: ptet_rules, salt_cap, bonus_conformity, coverage. The full list is in "Live check" above.

Is Pass-through tax rules online?

Yes. Its hosted endpoint answered an MCP connection from Electra Index 34m ago.