Arc & Ledger Tax Reference

• 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 r
• 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 ty
• 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 r
• 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 acc
• 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, fis
• 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, i
• 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 dep
• 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 IT
• 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
• 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
• 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

No long description beyond the summary.