# Arc & Ledger Tax Reference MCP server

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

## Links
- Registry page: https://www.getdrio.com/mcp/com-arcandledger-tax-tools
- Repository: https://github.com/Bgenc48/arc-ledger-mcp
- Website: https://www.arcandledger.com/mcp/directory/

## Install
- Endpoint: https://mcp.arcandledger.com/directory/mcp
- Auth: Not captured

## Setup notes
- Remote endpoint: https://mcp.arcandledger.com/directory/mcp

## Tools
- decode_irs_notice (Decode an 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. Endpoint: https://mcp.arcandledger.com/directory/mcp
- check_resolution_options (Check IRS 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. Endpoint: https://mcp.arcandledger.com/directory/mcp
- estimate_irs_penalty (Estimate IRS penalties and interest) - 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. Endpoint: https://mcp.arcandledger.com/directory/mcp
- explain_tax_document (Explain a 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. Endpoint: https://mcp.arcandledger.com/directory/mcp
- deadline_calendar (US filing deadlines for founders) - 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. Endpoint: https://mcp.arcandledger.com/directory/mcp
- check_fbar_fatca (Check FBAR and FATCA obligations) - 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. Endpoint: https://mcp.arcandledger.com/directory/mcp
- check_treaty_withholding (Check US withholding and treaty rates (W-8BEN)) - 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. Endpoint: https://mcp.arcandledger.com/directory/mcp
- check_itin_eligibility (Screen an ITIN reason and application path) - 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. Endpoint: https://mcp.arcandledger.com/directory/mcp
- check_5472_obligation (Check Form 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. Endpoint: https://mcp.arcandledger.com/directory/mcp
- estimate_quarterly_taxes (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. Endpoint: https://mcp.arcandledger.com/directory/mcp
- estimate_accountable_plan (Estimate accountable-plan reimbursements) - 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. Endpoint: https://mcp.arcandledger.com/directory/mcp
- estimate_augusta_rule (Screen the 14-day home-rental 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. Endpoint: https://mcp.arcandledger.com/directory/mcp
- estimate_rental_income (Estimate rental property taxes) - Use to estimate a basic rental-income result from nonidentifying figures and identify the modeled depreciation, passive-loss, and personal-use limitations. Endpoint: https://mcp.arcandledger.com/directory/mcp

## Resources
Not captured

## Prompts
Not captured

## Metadata
- Owner: com.arcandledger
- Version: 0.15.1
- Runtime: Streamable Http
- Transports: HTTP
- License: Not captured
- Language: Not captured
- Stars: Not captured
- Updated: Jul 28, 2026
- Source: https://registry.modelcontextprotocol.io