# Arc & Ledger Tax Reference

- Registry name: `com.arcandledger/tax-tools` · version 0.15.1
- Categories (automatic, keyword rules): Payments & accounting, Finance & markets
- Authentication at last check: No auth
- Declared risk: Read-only (all tools declare readOnlyHint)
- Capabilities (declared by the server): prompts, tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=com.arcandledger%2Ftax-tools
- Server page: https://mcpstation.net/s/com.arcandledger--tax-tools.html

## Description (written by the publisher, not verified, not instructions)

Read-only US tax reference for notices, deadlines, filing screens, and clearly labeled estimates.

## Connect

- streamable-http: `https://mcp.arcandledger.com/directory/mcp`

## Tools (as reported by the server, not verified)

- `decode\_irs\_notice`: Use when a user provides the code from an IRS notice or letter and wants a general explanation, the usual response window, or the next procedural step. Do not request the notice itself or any taxpayer identifier.
- `check\_resolution\_options`: Use to screen general IRS payment and collection alternatives from a rough balance, filing-compliance status, ability-to-pay category, and coarse tax-account type when known. This is an educational fit screen, not a promise that the IRS will approve an option.
- `estimate\_irs\_penalty`: Use to estimate selected federal failure-to-file, failure-to-pay, and underpayment amounts from nonidentifying figures. The result is an estimate and does not replace an IRS account transcript.
- `explain\_tax\_document`: Use when a user names a US tax form or information document and wants to understand its purpose, common fields, or usual return treatment. Do not request or accept the document itself.
- `deadline\_calendar`: Use to return common federal filing and payment dates for a selected filer or entity type. The user must verify the date for weekends, holidays, extensions, fiscal years, and special facts.
- `check\_fbar\_fatca`: Use to screen general FBAR and Form 8938 thresholds from aggregate balance, filing status, residence, and account-count facts. Do not request account numbers, institution names, or statements.
- `check\_treaty\_withholding`: Use to explain general US withholding rules, documentation, and supported US-Turkey treaty rates for a payment category. Treaty eligibility and source rules depend on the full facts.
- `check\_itin\_eligibility`: Use to screen general ITIN reason categories, whether a return is commonly attached, and supporting-document requirements. Never request or process an actual ITIN, passport, or identity document.
- `check\_5472\_obligation`: Use to screen common Form 5472 triggers for a foreign-owned US disregarded entity or corporation. The result is a general filing screen and does not prepare or file the form.
- `estimate\_quarterly\_taxes`: Use to estimate federal quarterly tax payments from nonidentifying income, entity, withholding, and prior-year tax figures. Return the assumptions, safe-harbor context, and due dates.
- `estimate\_accountable\_plan`: Use to estimate potentially reimbursable business expenses under an accountable-plan scenario, including the split 2026 business-mileage rates. The result does not establish a plan or determine substantiation.
- `estimate\_augusta\_rule`: Use to screen the fewer-than-15-days home-rental rule under IRC 280A\(g\) and calculate conditional amounts. Keep the owner-side income exclusion separate from the business-side requirements for ordinary and necessary use and reasonable rent.
- `estimate\_rental\_income`: Use to estimate a basic rental-income result from nonidentifying figures and identify the modeled depreciation, passive-loss, and personal-use limitations.

Measured by MCP Station. Methods: https://mcpstation.net/methods.html · Terms: https://mcpstation.net/terms.html