Name: Arc & Ledger Tax Tools
Author: Bgenc48

Arc & Ledger Tax Tools MCP

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

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What it does

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

Quickstart

# 1 — add it to Claude Code
claude mcp add --scope user --transport http arc-ledger-tax-tools-mcp https://mcp.arcandledger.com/mcp

# 2 — ask your agent for something these tools do
#   triage_tax_problem, decode_irs_notice, check_resolution_options and 18 more

Arc & Ledger Tax Tools costs nothing on mcprush: there is no plan to choose here, no cap to set and nothing mcprush can bill you for.

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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 nex

Parameter	Type	Required	Notes
problem	string	yes	The tax problem, as close as it maps. irs_notice = an IRS letter; back_taxes_owed = an IRS balance that cannot be paid in full; unfiled_returns = federal returns never filed; levy_or_garnishment = an
amount_band	string	no	Roughly how much is at stake, if known. Bands only, never an exact figure. Current IRS Simple Payment Plan balance criteria generally use a $50,000 ceiling for eligible individual and non-trust-fund a
years_behind	string	no	For unfiled returns: how many years are unfiled. The IRS generally looks for the last six years filed to restore filing compliance.
has_deadline_soon	boolean	no	True if a letter shows a response or payment date within about two weeks. Raises the urgency. No dates are computed here; use decode_irs_notice only for an IRS letter.
has_tax_agency_letter	boolean	no	True only when the user actually has an IRS or state tax-agency letter or notice in hand. Use this to distinguish a payroll or identity concern with a real letter from a general concern. The irs_notic
brief	boolean	no	Set true for a shorter answer: urgency, this-week actions, and the matching service only.
language	string	no	Language for an availability or waitlist handoff: English (en), Turkish (tr), or Spanish (es).

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.

Parameter	Type	Required	Notes
notice_code	string	yes	The notice or letter code printed on the IRS mail, e.g. "CP2000", "CP 14", "LT11", "Letter 1058".
received_date	string	no	Date on the notice (YYYY-MM-DD). Used to compute the response deadline. The IRS clock runs from the notice date printed on the letter.
amount_shown	number	no	The dollar amount the notice proposes or bills, if any. Optional; used only for context, never stored.
brief	boolean	no	Set true for a shorter answer: skips the generic how-to-read guidance and common-error list.

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 ab

Parameter	Type	Required	Notes
balance_owed_usd	number	yes	Total amount owed to the IRS including tax, penalties, and interest (a rough figure is fine).
all_required_returns_filed	boolean	no	Whether every required tax return has actually been FILED (even if the tax was not paid). Filing compliance is generally required before the IRS formalizes a collection alternative, but the exact acco
tax_account_type	string	no	Coarse, nonidentifying IRS account type. individual_income_tax includes Form 1040 income-tax balances, including a sole proprietor whose balance is on Form 1040. business_non_trust_fund_or_out_of_busi
ability_to_pay	string	yes	Your realistic ability to pay. can_pay_in_full_soon = you can clear the balance within 180 days; can_make_monthly_payments = a monthly amount but not in full; can_pay_little = only a very small monthl
balance_includes_penalties	boolean	no	Whether the balance includes failure-to-file or failure-to-pay penalties, so penalty abatement may reduce it. Defaults to true.
brief	boolean	no	Set true for a shorter answer: options come back as path + fit only, without the descriptions.

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.

Parameter	Type	Required	Notes
balance_owed_usd	number	yes	The unpaid tax balance (the tax itself, before penalties and interest).
months_late	number	yes	Whole months past the deadline. The failure-to-file penalty counts any part of a month as a full month.
return_filed	boolean	no	Whether you actually FILED the return (even if you did not pay). If false, the larger 5%/month failure-to-file penalty applies. Defaults to false (not filed).

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),

Parameter	Type	Required	Notes
document	string	yes	The tax form or document name as printed on it, e.g. "W-2", "1099-K", "1099-NEC", "Schedule K-1 (Form 1065)", "1042-S", "1098-T", "SSA-1099", "1095-A", "W-9".
brief	boolean	no	Set true for a shorter answer: skips the box-by-box guide and the pre-filing checklist.

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.

Parameter	Type	Required	Notes
entity_type	string	yes	Your US tax entity. foreign_owned_llc = a SINGLE-MEMBER US LLC owned by a non-US person (files pro-forma 1120 + 5472); a multi-member foreign-owned LLC is a partnership, use multi_member_llc. foreign_
filing_year	integer	no	The tax year whose deadlines you want (the year being reported). Defaults to the prior calendar year.
has_us_source_wages	boolean	no	Nonresident individuals only: whether you had US wages subject to withholding. Determines the 1040-NR due date (April 15 if yes, June 15 if no).
has_foreign_bank_over_10k	boolean	no	Whether the aggregate of your foreign financial accounts exceeded $10,000 at any point (triggers FBAR).
formed_in_us	boolean	no	Whether the entity was formed in the US (relevant to the BOI report, from which most US-formed companies are now exempt).

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

Parameter	Type	Required	Notes
service	string	yes	What the documents are for: "individual_return" (Form 1040), "self_employed_return" (1040 with Schedule C), "foreign_owned_llc_5472" (pro-forma 1120 + Form 5472 for a foreign-owned single-member US LL
first_year_client	boolean	no	Whether this is your first year working with the firm. Adds the one-time onboarding documents (prior returns, IDs, authorizations).
language	string	no	Language for an availability or waitlist handoff: English (en), Turkish (tr), or Spanish (es).

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.

Parameter	Type	Required	Notes
max_aggregate_foreign_balance_usd	number	yes	The highest combined value of ALL your foreign financial accounts at any point during the year, in USD.
filing_status	string	yes	Your US tax filing status.
lives_abroad	boolean	yes	True if your tax home is outside the United States (higher Form 8938 thresholds apply).
account_count	number	no	Number of foreign accounts, if known.
unfiled_years	number	no	How many past years of FBARs you have NOT filed but should have. 0 or omitted if current.

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 clai

Parameter	Type	Required	Notes
income_type	string	yes	The kind of US-source payment: "dividends" (from US stocks or a US corporation), "interest", "royalties" (software, content, IP licensing), "personal_services" (freelance/consulting work or wages), or
payee_country	string	yes	Country of TAX RESIDENCE of the person or company RECEIVING the payment. "turkey" returns the US-Turkey treaty rates this server carries; "other_non_us" returns the default statutory rates and how to
payee_type	string	no	Whether the payee is an individual or a company/entity. Defaults to individual. Determines the form (W-8BEN vs W-8BEN-E) and the treaty dividend rate.

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.

Parameter	Type	Required	Notes
has_ssn	boolean	yes	Whether you already have, or are eligible for, a US Social Security Number. If yes, you cannot get an ITIN.
reason	string	yes	Why you think a US taxpayer ID may be needed. file_us_tax_return = you must file a US return; owner_of_us_llc = you own a US LLC or corporation, which does not by itself establish a personal ITIN need
is_foreign_national	boolean	no	Whether you are a non-US citizen without US immigration status that grants an SSN. Defaults to true.

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 fili

Parameter	Type	Required	Notes
entity_type	string	yes	The US entity. single_member_llc = a US LLC with ONE owner (a disregarded entity); multi_member_llc = a US LLC with two or more owners (a partnership by default); us_corporation = a US C-corporation;
foreign_owned	boolean	yes	Whether 25% or more of the entity is owned, directly or indirectly, by a non-US person or foreign company. Form 5472 is triggered by 25% foreign ownership.
had_reportable_transaction	string	no	Whether there was a reportable transaction with the foreign owner during the year. Reportable transactions include forming or funding the company, capital contributions, distributions, loans in either
formed_in_us	boolean	no	Whether the entity was formed in the US (a Wyoming or Delaware LLC is US-formed). Relevant only to the separate BOI report, from which US-formed companies are now exempt.

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.

Parameter	Type	Required	Notes
expected_net_profit_usd	number	yes	Expected annual net profit (revenue minus business expenses), before any owner salary.
state	string	no	US state, 2-letter or name. Defaults to CA. Only California franchise taxes are modeled (the SMLLC gross-receipts fee is excluded; see caveats).
owner_salary_estimate_usd	number	no	A reasonable W-2 salary you would pay yourself as an S-corp owner. If omitted, the midpoint of the reasonable-compensation starting range for an owner-services business (about half of profit) illustra
currently_has_llc	boolean	no	Whether the business already operates as an LLC today. Defaults to true. A plain sole proprietorship (no LLC) does not owe the California $800 franchise tax.
licensed_profession	string	no	Set to physician (or other_ca_licensed for another California licensed profession under Corp. Code 13401) when the work is a licensed professional service. In California such a practice cannot use an
w2_wages_usd	number	no	W-2 wages from other employers this year (for example a hospital job). They use up the Social Security wage base and the Additional Medicare threshold, which decides whether an S-corp salary saves or
filing_status	string	no	Filing status for the Additional Medicare Tax threshold. Defaults to single.
spouse_wages_usd	number	no	Spouse W-2 wages, used only with mfj (the Additional Medicare threshold is household-level for joint filers).

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.

Parameter	Type	Required	Notes
ytd_net_income_usd	number	yes	Your net self-employment / business income so far THIS year (year to date), before tax.
entity	string	yes	How the income is taxed. Sole proprietor / SMLLC / partnership pay self-employment tax; S-corp shareholders take wages (withheld) plus distributions.
state	string	no	US state. Only California installment timing is modeled specifically; when omitted, no state is assumed and only federal figures are computed.
ytd_withholding_usd	number	no	Federal tax already withheld this year (e.g. from a W-2 or S-corp salary). Counts toward the safe harbor.
prior_year_total_tax_usd	number	no	Total federal tax on last year's return. Enables the prior-year safe harbor (often the easiest to hit).
prior_year_agi_usd	number	no	Last year's adjusted gross income (AGI). If over $150,000 ($75,000 MFS), the prior-year safe harbor rises from 100% to 110%.

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.

Parameter	Type	Required	Notes
business_net_profit_usd	number	yes	Annual net profit of the S-corp BEFORE any owner salary (revenue minus business expenses).
profit_driver	string	no	What drives the profit: "primarily_owner_services" (consulting/agency/solo professional), "mixed" (your work plus staff/systems), or "capital_or_product" (product/capital/team, not your labor). Defaul

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.

Parameter	Type	Required	Notes
home_office_expense_usd	number	no	Annual business-use portion of your home costs (rent/mortgage interest, utilities, insurance x business-use %). If you only know square footage, use the simplified method: $5/sq ft up to 300 sq ft = $
business_miles	number	no	Business miles driven in your personal vehicle. For 2026, also identify whether the miles were before July 1, on or after July 1, or span both periods because the IRS changed the rate midyear.
business_mileage_period	string	no	When the business miles occurred. Defaults to mixed_or_unknown, which returns a reimbursement range rather than inventing a single rate. For miles in both 2026 periods, call the tool once per period a
cell_internet_usd	number	no	Annual business-use portion of your cell phone and home internet.
other_business_expense_usd	number	no	Other out-of-pocket business expenses you personally paid (supplies, travel, professional dues, etc.).
marginal_tax_rate_pct	number	no	Your combined marginal tax rate as a percent (e.g. 24, or 33 to include state). Used to estimate the tax saving. Defaults to 22.

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.

Parameter	Type	Required	Notes
fair_daily_rental_rate_usd	number	yes	The FAIR-MARKET daily rate to rent your home for a comparable business event (e.g. what a hotel meeting room or event space of similar size would charge). Must be supportable with a written quote or c
days_rented	number	yes	Total number of days during the year the dwelling is rented to anyone at a fair rental price, including days rented to your business. The IRC 280A(g) income exclusion requires fewer than 15 total rent
marginal_tax_rate_pct	number	no	Your combined marginal tax rate as a percent (e.g. 24 for 24%, or 33 to include state). Used to translate the deduction into a tax saving. Defaults to 22.

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.

Parameter	Type	Required	Notes
annual_rental_income_usd	number	yes	Gross rent received this year, before expenses.
operating_expenses_usd	number	no	Deductible operating expenses: mortgage interest, property tax, insurance, HOA, repairs, management, utilities, supplies. Excludes depreciation (computed for you).
property_purchase_price_usd	number	no	What you paid for the property (building + land). Used to compute straight-line depreciation.
land_percent	number	no	Percent of the purchase price attributable to non-depreciable land (default 20). The building is depreciated over 27.5 years.
other_income_usd	number	no	Your other taxable income (e.g. wages, business) for the year. Sets the marginal rate applied to net rental income, and gates the passive-loss allowance.
filing_status	string	no	Federal filing status. Defaults to single.
real_estate_professional	boolean	no	Whether you materially participate as a real-estate professional under IRC 469(c)(7). If true, rental losses are not passive-limited.
rental_type	string	no	long_term (standard residential lease) or short_term (Airbnb/VRBO-style). Defaults to long_term.
personal_use_days	number	no	Days YOU used the property personally (short-term only). Triggers the 14-day tax-free rule when a stay is rented 14 days or fewer and used more personally.
rental_days	number	no	Days the property was rented at fair value (short-term only).

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.

Parameter	Type	Required	Notes
operates_in_california	boolean	no	Whether you (or the business) physically operate in, or are a resident of, California. If true, California registration is generally required regardless of where you form.
raising_venture_capital	boolean	no	Whether you plan to raise venture capital or convert to a C-corp. If true, Delaware is usually preferred by investors.
priority	string	no	What matters most: lowest_cost, most_privacy, or investor_ready. Defaults to lowest_cost.

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.

Parameter	Type	Required	Notes
annual_sales_usd	number	yes	Your total sales into the state(s) in the current or prior calendar year.
transaction_count	number	no	Approximate number of separate sales transactions into the state(s). Some states count transactions as well as dollars.
states	array	no	US states to check, as 2-letter codes (e.g. ["CA","TX","NY"]). If omitted, the tool explains the general rule.

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.

Parameter	Type	Required	Notes
service	string	yes	The kind of work you want priced.
details	object	no	—
language	string	no	Language for an availability or waitlist handoff: English (en), Turkish (tr), or Spanish (es).

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.

Parameter	Type	Required	Notes
type	string	yes	Which consultation or paid review to start. Cross-border or multi-year situations suit the Specialist; a tax-agency letter suits the notice review.
topic	string	no	A short subject line for the meeting (optional).
language	string	no	Language for an availability or waitlist handoff: English (en), Turkish (tr), or Spanish (es).

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Arc & Ledger Tax Tools MCP

What it does

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