Arc & Ledger Tax Tools MCP Server

by bgenc48 Your server? Claim it

answering

Arc & Ledger Tax Tools is answering right now. Last checked 15 min ago. It exposes 21 tools. Last commit 31 Jul 2026.

Enrolled Agent tax tools: IRS notices, FBAR, LLC vs S-Corp, quarterly estimates & more.

Uptime history 48 days of history

48 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

136 ms

Response time

average over 24h

Stars

last commit 31 Jul 2026

What changed 18

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 10 August 2026. No other catalogue keeps this.

15 Sep a tool changed version

14 Sep a tool changed version

12 Sep a tool changed version

11 Sep 4 tools changed the parameters they ask for book_consultation, get_document_checklist, get_fee_quote and 1 more

11 Sep 3 tool descriptions were rewritten book_consultation, decode_irs_notice, get_document_checklist

11 Sep a tool changed version

8 Sep a tool changed version2 times that day

7 Sep a tool changed version

31 Aug a tool changed version

27 Aug a tool changed version

and 3 more, back to 10 August 2026

Nothing serious here today

Today is the operative word: we check Arc & Ledger Tax Tools every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 15 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add arc-ledger-tax-tools --transport http https://mcp.arcandledger.com/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "arc-ledger-tax-tools": {
      "url": "https://mcp.arcandledger.com/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.arc-ledger-tax-tools]
url = "https://mcp.arcandledger.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "arc-ledger-tax-tools": {
      "url": "https://mcp.arcandledger.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "arc-ledger-tax-tools": {
      "url": "https://mcp.arcandledger.com/mcp"
    }
  }
}

Available tools 21

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

estimate

estimate_accountable_plan

Use this when an S-corp or C-corp owner asks how an accountable plan handles substantiated home-office, mileage, cell-phone, or other out-of-pocket business expenses. Estimates the reimbursement and tax effect, applies the two separate 2026 mileage rates by date, and explains the three requirements: business connection, substantiation, and return of excess.

estimate_augusta_rule

Use this when a business owner asks about the "Augusta rule," renting a home to a related business, or the fewer-than-15-day rental-income exclusion in IRC 280A(g). Screens the total rental-day limit and calculates conditional amounts while keeping the owner-side exclusion separate from the business-side deduction requirements.

estimate_irs_penalty

Use this when someone owes the IRS and asks how much the penalties and interest will be, or what late filing/paying costs. Estimates the failure-to-file (5%/mo) and failure-to-pay (0.5%/mo) penalties and interest on a balance, and explains the current Automatic Exemption from Penalty, First Time Abate, and reasonable-cause relief paths.

estimate_quarterly_taxes

Use this when a freelancer or business owner asks how much estimated tax to pay or whether they are underpaid for the year. Computes federal self-employment and income tax on annualized income, the safe-harbor target, per-quarter amounts and due dates, plus California's 30/40/0/30 installment timing.

estimate_reasonable_comp

Use this when an S-corp owner asks how much salary they should pay themselves ("reasonable compensation," "am I paying myself right?"). Given net profit and what drives it, returns a starting salary RANGE, the distribution left over, the employment tax that classification avoids, and the facts-and-circumstances test the IRS actually applies. Emphasizes that a defensible figure needs a comp study.

estimate_rental_income

Use this when someone asks how much tax they owe on rental income (Airbnb/short-term or long-term), or whether a rental loss is deductible. Computes net rental income after operating expenses and straight-line depreciation, the passive-loss allowance and carryforward, the short-term 14-day rule, and the marginal federal tax effect.

compare

compare_formation_states

Use this when someone (often a non-US founder) asks which US state to form their LLC or company in - Wyoming, New Mexico, Delaware, or California. Compares government fees, annual cost, franchise tax, privacy, and approval time, and recommends a state based on their situation.

compare_llc_scorp

Use this when a self-employed user or single-member LLC owner asks whether an S-Corp election would save them money. Shows a side-by-side of self-employment tax vs salary-plus-distribution, payroll and compliance costs, California franchise taxes, and the break-even zone.

5472

check_5472_obligation

Use this when a non-US person who owns a US company (especially a single-member US LLC or a US corporation) asks whether they must file Form 5472, what the penalty is, or what a foreign-owned US entity owes each year. Returns whether Form 5472 with a pro-forma Form 1120 is required, the reportable-transaction rule, the deadline and extension, the annual compliance set, and the penalty for not filing. Distinguishes a single-member LLC (files 5472) from a multi-member LLC (a partnership that files Form 1065 instead).

book

book_consultation

Use this when a user wants to talk to, hire, or get a consultation or written tax-notice review with Arc & Ledger. Returns the correct first-party action link (booking, checkout, or waitlist as applicable), what happens next, the office identity (Enrolled Agent, address, languages EN/TR/ES), and what to expect.

deadline

deadline_calendar

Use this when a US business owner or nonresident (especially a foreign founder of a US LLC or C-corp) asks what US forms they must file and when. Returns each required federal form, its due date and extension, and the penalty for missing it, including Form 5472, FBAR, and the BOI report. Especially useful for non-US founders of US companies.

decode

decode_irs_notice

Use this when, and only when, a user mentions receiving an IRS letter or notice and wants to know what it means, the deadline, or what to do. For a state-agency letter, use triage_tax_problem with problem=state_tax instead. Give this tool the IRS notice code (e.g. CP2000, CP14, LT11) and optionally the notice date and amount shown. Set brief:true for a shorter answer.

document

get_document_checklist

Use this when someone asks what documents, statements, or records to gather for a US tax filing or engagement: an individual return, a self-employed Schedule C return, a foreign-owned single-member LLC (Form 5472) filing, an S-corp or partnership return, an FBAR/Streamlined offshore catch-up, or an ITIN application. Returns the service-specific document list, first-year onboarding extras, and how to prepare files safely without implying that intake or uploads have opened.

explain

explain_tax_document

Use this when a user receives a US tax form or information document and wants to know what it is, why they got it, which boxes matter, where it goes on their return, what to double-check, or what to do if it is wrong, duplicated, or never arrived. Covers W-2, W-2G, the 1099 family (NEC, MISC, K, INT, DIV, B, DA, R, G, C, S, SA, Q), Schedule K-1 (partnership 1065, S-corp 1120-S, estate/trust 1041), SSA-1099, 1042-S, 5498, 1098, 1098-T, 1098-E, 1095-A/B/C, and W-9 / W-8BEN requests. For IRS letters and notices (CP or LT codes) use decode_irs_notice instead. Set brief:true for a shorter answer.

fbar

check_fbar_fatca

Use this when a user has foreign bank accounts, assets, or unfiled foreign-account reports and needs to know their US reporting obligations (FBAR / FinCEN 114 and Form 8938 / FATCA), thresholds, penalty exposure, and catch-up options.

fee

get_fee_quote

Use this when a user asks what Arc & Ledger charges, or wants a price estimate for tax preparation, bookkeeping, business formation, or IRS help. Returns a published price range and line items, never a single committed number, plus what is included and the next step by complexity.

itin

check_itin_eligibility

Use this when someone asks whether a federal tax purpose may support an ITIN application or what a Form W-7 path generally requires. Returns a reason-specific screen, whether a return is commonly attached, current document-handling cautions, and official sources. Entity ownership or a bank request alone does not establish personal ITIN eligibility.

resolution

check_resolution_options

Use this when someone owes the IRS back taxes and asks how to settle, get on a payment plan, lower what they owe, or stop collection. Screens which IRS paths may fit - short-term payment plan, current Simple Payment Plan or an installment agreement with financial review, Offer in Compromise (a fit-check only, never a promise of acceptance), Currently Not Collectible hardship status, and penalty abatement - and lists the forms needed (9465, 433-F/A/B, 656, 843, 8821, 2848) plus collection-statute context. A coarse tax_account_type improves the screen without identifying the taxpayer. Never guarantees an IRS outcome. Set brief:true for a shorter answer.

sales

check_sales_tax_nexus

Use this when an online seller or e-commerce/Amazon business asks whether they must collect sales tax in a state (economic nexus). Given annual sales, transaction count, and states, flags where economic nexus is likely met and explains the physical-nexus (FBA inventory) trap.

treaty

check_treaty_withholding

Use this when a non-US person or company receiving US-source income (dividends, interest, royalties, freelance/personal services, or a scholarship) asks how much US tax will be withheld, whether a tax treaty reduces it, or which form to give the payer (W-8BEN, W-8BEN-E, W-9, Form 8233). Returns the default statutory rate, the US-Turkey treaty rate where one applies, the documentation a treaty claim needs (including a TIN/ITIN), and how refunds of over-withholding work.

triage

triage_tax_problem

Use this when someone has a tax problem and does not know where to start; call it FIRST, before the specific tools. Covers an IRS or state letter, back taxes they cannot pay, unfiled years, a levy or wage garnishment, an audit, penalties, an identity-verification letter, and payroll tax trouble. Returns an urgency level, a this-week and this-month action plan, what not to do, which tool to run next for the specifics, and the matching published-fee service. General information only; never a guaranteed IRS outcome. Set brief:true for a shorter answer.

Endpoints

URL	Transport	State	Latency	Checked
https://mcp.arcandledger.com/mcp	streamable-http	answering	83 ms	15 min ago

Alternatives to Arc & Ledger Tax Tools

same job, measured the same way

Arc & Ledger Tax Reference

by arcandledger

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

13 tools answering

Lore Context

by lore-context

Governed AI-agent memory, Evidence Ledger traces, evals, and portable context tools.

24 installs/wk local only

Krosos

by krosos

Your accounting ledger as typed tools: net worth, holdings, history, tax estimates, trade logging.

12 tools answering

Quantoracle

by fel123

73 deterministic quant tools for AI agents. LLMs drift on Black-Scholes; these are exact math.

42 installs/wk local only

CarHunt

by carhunt

French used-car search across LeBonCoin, LaCentrale, L'Argus and more, with price estimates.

10 tools answering

Nanotoll MCP

by nanotoll

7 agent tools (prune, convert, estimate, diff, patch, generate, validate). USDC on Base L2.

8 tools answering

Dribba

by dribba

Dribba: services, case studies, budget estimates and contact, as MCP tools.

47 installs/wk 5 tools answering

Mini Accountant

by miniaccountant

Hosted MCP server for Mini Accountant: invoices, expenses, customers, analytics, tax estimates.

answering

Arc & Ledger Tax Tools — questions

Answers built from our own checks of this server.

What can Arc & Ledger Tax Tools do?

It exposes 21 tools, read directly from the server on our last check. Among them: book_consultation, check_5472_obligation, check_fbar_fatca, check_itin_eligibility, check_resolution_options, check_sales_tax_nexus and 15 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

What is Arc & Ledger Tax Tools mostly used for?

Its tools cluster around estimate and compare. That is what this server is built to work with — the grouping comes from the actual tool names, not from a category we assigned.

Is Arc & Ledger Tax Tools working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 136 ms. The bar chart above shows every period we have measured.

How do I connect Arc & Ledger Tax Tools?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Arc & Ledger Tax Tools need an API key?

No. Arc & Ledger Tax Tools completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 21 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Arc & Ledger Tax Tools?

It answers our handshake in 136 ms on average, which is faster than 79% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is Arc & Ledger Tax Tools open source?

We cannot say either way: written in TypeScript and 0 stars on GitHub, but we could not determine the licence, and without one the code is not open source by default.