triage_tax_problem
Triage a 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.
Parametersbriefproblemrequiredlanguageamount_bandyears_behindhas_deadline_soonhas_tax_agency_letter
decode_irs_notice
Decode an 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.
Parametersbriefnotice_coderequiredamount_shownreceived_date
check_resolution_options
Check IRS 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.
Parametersbriefability_to_payrequiredbalance_owed_usdrequiredtax_account_typeall_required_returns_filedbalance_includes_penalties
estimate_irs_penalty
Estimate IRS penalties and interest
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.
Parametersmonths_laterequiredreturn_filedbalance_owed_usdrequired
explain_tax_document
Explain a 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.
Parametersbriefdocumentrequired
deadline_calendar
US filing deadlines for founders
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.
Parametersentity_typerequiredfiling_yearformed_in_ushas_us_source_wageshas_foreign_bank_over_10k
get_document_checklist
Get a 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.
Parametersservicerequiredlanguagefirst_year_client
check_fbar_fatca
Check FBAR and FATCA obligations
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.
Parameterslives_abroadrequiredaccount_countfiling_statusrequiredunfiled_yearsmax_aggregate_foreign_balance_usdrequired
check_treaty_withholding
Check US withholding and treaty rates (W-8BEN)
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.
Parameterspayee_typeincome_typerequiredpayee_countryrequired
check_itin_eligibility
Screen an ITIN reason and application path
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.
Parametersreasonrequiredhas_ssnrequiredis_foreign_national
check_5472_obligation
Check Form 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).
Parametersentity_typerequiredformed_in_usforeign_ownedrequiredhad_reportable_transaction
compare_llc_scorp
Compare LLC vs S-Corp
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.
Parametersstatew2_wages_usdfiling_statusspouse_wages_usdcurrently_has_llclicensed_professionexpected_net_profit_usdrequiredowner_salary_estimate_usd
estimate_quarterly_taxes
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.
Parametersstateentityrequiredprior_year_agi_usdytd_net_income_usdrequiredytd_withholding_usdprior_year_total_tax_usd
estimate_reasonable_comp
Estimate S-corp reasonable compensation
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.
Parametersprofit_driverbusiness_net_profit_usdrequired
estimate_accountable_plan
Estimate accountable-plan reimbursements
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.
Parametersbusiness_milescell_internet_usdmarginal_tax_rate_pctbusiness_mileage_periodhome_office_expense_usdother_business_expense_usd
estimate_augusta_rule
Screen the 14-day home-rental 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.
Parametersdays_rentedrequiredmarginal_tax_rate_pctfair_daily_rental_rate_usdrequired
estimate_rental_income
Estimate rental property taxes
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.
Parametersrental_daysrental_typeland_percentfiling_statusother_income_usdpersonal_use_daysoperating_expenses_usdannual_rental_income_usdrequiredreal_estate_professionalproperty_purchase_price_usd
compare_formation_states
Compare US 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.
Parameterspriorityoperates_in_californiaraising_venture_capital
check_sales_tax_nexus
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.
Parametersstatesannual_sales_usdrequiredtransaction_count
get_fee_quote
Get a fixed-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.
Parametersdetailsservicerequiredlanguage
book_consultation
Request a consultation
Use this when a user wants to talk to, hire, or get a consultation or written tax-notice review with Arc & Ledger. Consultation requests start with a written inquiry on the contact form; the firm does not offer free calls. Returns the correct first-party action link (inquiry form, checkout, or waitlist as applicable), what happens next, the office identity (Enrolled Agent, address, languages EN/TR/ES), and what to expect.
Parameterstyperequiredtopiclanguage