calculate_tax
ChatGPTRun an Irish tax calculator and return the full result. Available calculators: - base: Calculate income tax, USC, and PRSI for a given salary. Supports single/married, multiple employments, tax credits. - refund: Estimate a PAYE tax refund by comparing tax paid vs tax owed. - tax-free-earnings: Calculate tax-free earnings date for someone arriving in or departing Ireland mid-year. - refund-for-move-date: Calculate tax refund for a specific move date (arriving/departing Ireland). - net-to-gross: Reverse-calculate the gross salary needed to achieve a target net income. - rental-income: Calculate tax on rental income including allowable expenses and mortgage interest. - self-employed: Calculate tax for self-employed individuals including PRSI Class S and expenses. - capital-gains: Calculate Capital Gains Tax (CGT) on asset disposals at 33%. - share-options: Calculate tax on share option exercise (RTSO — Relevant Tax on Share Options). - share-options-cgt: Calculate CGT on the sale of shares acquired via share options. - work-from-home-expense: Calculate e-worker tax relief for remote working expenses. - avc: Calculate maximum Additional Voluntary Contribution (AVC) and tax relief. - pension-value: Estimate pension fund value at retirement based on contributions and growth. - future-fund: Estimate future investment fund value with regular contributions. - mortgage: Calculate monthly mortgage repayments, total interest, and amortisation. - redundancy-tax: Calculate tax on redundancy and termination payments (SCSB, top-up, etc.). - mortgage-affordability: Calculate maximum mortgage you can afford based on income and LTI rules. - cat: Calculate Capital Acquisitions Tax (CAT) on gifts and inheritances. - sarp: Calculate SARP (Special Assignee Relief Programme) tax relief for foreign assignees. - vat3: Calculate VAT3 return figures for VAT-registered businesses. Pass the calculator name and its required inputs. Use get_calculator_schema first if you need to know the exact input fields for a calculator. Common examples: base (income tax): {"marital_status": "single", "employment_income": {"income": 75000, "period": "annual"}, "year": 2026} marital_status options: single, widow, married_one_income, married_two_income refund: {"marital_status": "single", "employment_income": {"income": 50000, "tax_paid": 18000}, "year": 2026} capital-gains: {"sale_price": 400000, "purchase_price": 250000, "purchase_date": "2018-03-15", "sale_date": "2026-06-01", "year": 2026} mortgage: {"home_price": 400000, "deposit": 40000, "loan_term_years": 30, "interest_rate": 4.0} work-from-home-expense: {"electricity_costs": 1200, "heating_costs": 800, "internet_costs": 600, "tax_year": 2026, "total_earnings": 75000, "days_working_from_home": 200} avc: {"age": 45, "gross_earnings": 100000, "year": 2026} share-options: {"share_option_price": 10, "sale_price": 50, "number_of_units": 1000} redundancy-tax: {"employment_start_date": "2010-01-01", "employment_end_date": "2026-06-01", "gross_weekly_pay": 1500} mortgage-affordability: {"buyer_type": "first_time_buyer", "gross_annual_income_1": 75000, "savings": 50000}
get_calculator_schema
ChatGPTGet the JSON Schema for a specific tax calculator. Returns input fields, types, defaults, and constraints. Use before calling calculate_tax if you need to know what fields are required.
get_calculator_stats
ChatGPTGet usage statistics for a specific tax calculator.
get_key_dates
ChatGPTGet important Irish Revenue dates and deadlines (filing dates, payment dates, etc.).
get_revenue_document_text
ChatGPTGet the full text of a specific Revenue Tax & Duty Manual document. Use search_revenue_documents first to find the document. You can pass the `url` from the search result directly — URLs, paths, and bare filenames are all accepted. Not all documents have extracted text available. Content is reused from public sector sources, normally revenue.ie under Revenue's PSI Licence (CC BY 4.0); reproduce the result's own attribution where present, otherwise attribution.source.statement, when citing.
get_revenue_ebrief_changelog
ChatGPTGet the Revenue eBrief changelog — recent updates to Revenue guidance and Tax & Duty Manuals. Useful for checking what Revenue guidance has changed recently. Content is reused from public sector sources, normally revenue.ie under Revenue's PSI Licence (CC BY 4.0); reproduce the result's own attribution where present, otherwise attribution.source.statement, when citing.
get_tax_constants
ChatGPTGet Irish tax constants. Returns tax bands, rates, USC rates, PRSI rates, tax credits, and thresholds. Useful for understanding the current tax rules without running a full calculation.
get_tax_treaty_text
ChatGPTGet the full text of a specific tax-treaty document. Use search_tax_treaties first to find the document. URLs, paths, and bare filenames are all accepted. Not all documents have extracted text available. Content is reused from public sector sources, normally revenue.ie under Revenue's PSI Licence (CC BY 4.0); reproduce the result's own attribution where present, otherwise attribution.source.statement, when citing.
list_calculators
ChatGPTList all available Irish tax calculators with their names and descriptions. Returns a list of calculators that can be used with the calculate_tax tool.
list_revenue_document_categories
ChatGPTList all available categories for Revenue Tax & Duty Manual documents. Use with search_revenue_documents to filter results by category. Content is reused from public sector sources, normally revenue.ie under Revenue's PSI Licence (CC BY 4.0); reproduce the result's own attribution where present, otherwise attribution.source.statement, when citing.
list_tax_treaty_countries
ChatGPTList all countries with an Irish double-taxation treaty. Use with search_tax_treaties to filter results by country. Content is reused from public sector sources, normally revenue.ie under Revenue's PSI Licence (CC BY 4.0); reproduce the result's own attribution where present, otherwise attribution.source.statement, when citing.
search_revenue_documents
ChatGPTSearch Irish Revenue Tax & Duty Manual (TDM) documents. Find official Revenue guidance documents by keyword. Returns document titles, categories, and filenames. Use get_revenue_document_text to read the full text of a specific document. Content is reused from public sector sources, normally revenue.ie under Revenue's PSI Licence (CC BY 4.0); reproduce the result's own attribution where present, otherwise attribution.source.statement, when citing.
search_tax_treaties
ChatGPTSearch Ireland's double-taxation treaty documents (treaties, protocols, MLI texts). Find treaty documents by keyword and/or country. Returns titles, country, document type, and identifiers. Use get_tax_treaty_text to read the full text of a document. Content is reused from public sector sources, normally revenue.ie under Revenue's PSI Licence (CC BY 4.0); reproduce the result's own attribution where present, otherwise attribution.source.statement, when citing.
calculate_tax
ClaudeRun an Irish tax calculator and return the full result. Available calculators: - base: Calculate income tax, USC, and PRSI for a given salary. Supports single/married, multiple employments, tax credits. - refund: Estimate a PAYE tax refund by comparing tax paid vs tax owed. - tax-free-earnings: Calculate tax-free earnings date for someone arriving in or departing Ireland mid-year. - refund-for-move-date: Calculate tax refund for a specific move date (arriving/departing Ireland). - net-to-gross: Reverse-calculate the gross salary needed to achieve a target net income. - rental-income: Calculate tax on rental income including allowable expenses and mortgage interest. - self-employed: Calculate tax for self-employed individuals including PRSI Class S and expenses. - capital-gains: Calculate Capital Gains Tax (CGT) on asset disposals at 33%. - share-options: Calculate tax on share option exercise (RTSO — Relevant Tax on Share Options). - share-options-cgt: Calculate CGT on the sale of shares acquired via share options. - work-from-home-expense: Calculate e-worker tax relief for remote working expenses. - avc: Calculate maximum Additional Voluntary Contribution (AVC) and tax relief. - pension-value: Estimate pension fund value at retirement based on contributions and growth. - future-fund: Estimate future investment fund value with regular contributions. - mortgage: Calculate monthly mortgage repayments, total interest, and amortisation. - redundancy-tax: Calculate tax on redundancy and termination payments (SCSB, top-up, etc.). - mortgage-affordability: Calculate maximum mortgage you can afford based on income and LTI rules. - cat: Calculate Capital Acquisitions Tax (CAT) on gifts and inheritances. - sarp: Calculate SARP (Special Assignee Relief Programme) tax relief for foreign assignees. - vat3: Calculate VAT3 return figures for VAT-registered businesses. - vat: Add VAT to, or remove VAT from, an amount at an Irish VAT rate. - stamp-duty: Calculate stamp duty on residential or non-residential property. - motor-tax: Calculate annual, half-year and quarterly motor tax for a private car. - bike-to-work: Calculate the saving from buying a bike through the Cycle to Work scheme. - fair-deal: Estimate the weekly contribution under the Nursing Homes Support Scheme (Fair Deal). Pass the calculator name and its required inputs. Use get_calculator_schema first if you need to know the exact input fields for a calculator. Common examples: base (income tax): {"marital_status": "single", "employment_income": {"income": 75000, "period": "annual"}, "year": 2026} marital_status options: single, widow, married_one_income, married_two_income refund: {"marital_status": "single", "employment_income": {"income": 50000, "tax_paid": 18000}, "year": 2026} capital-gains: {"sale_price": 400000, "purchase_price": 250000, "purchase_date": "2018-03-15", "sale_date": "2026-06-01", "year": 2026} mortgage: {"home_price": 400000, "deposit": 40000, "loan_term_years": 30, "interest_rate": 4.0} work-from-home-expense: {"electricity_costs": 1200, "heating_costs": 800, "internet_costs": 600, "tax_year": 2026, "total_earnings": 75000, "days_working_from_home": 200} avc: {"age": 45, "gross_earnings": 100000, "year": 2026} share-options: {"share_option_price": 10, "sale_price": 50, "number_of_units": 1000} redundancy-tax: {"employment_start_date": "2010-01-01", "employment_end_date": "2026-06-01", "gross_weekly_pay": 1500} mortgage-affordability: {"buyer_type": "first_time_buyer", "gross_annual_income_1": 75000, "savings": 50000}
get_calculator_schema
ClaudeGet the JSON Schema for a specific tax calculator. Returns input fields, types, defaults, and constraints. Use before calling calculate_tax if you need to know what fields are required.
get_calculator_stats
ClaudeGet usage statistics for a specific tax calculator.
get_key_dates
ClaudeGet important Irish Revenue dates and deadlines (filing dates, payment dates, etc.).
get_revenue_document_text
ClaudeGet the full text of a specific Revenue Tax & Duty Manual document. Use search_revenue_documents first to find the document. You can pass the `url` from the search result directly — URLs, paths, and bare filenames are all accepted. Not all documents have extracted text available. Content is reused from public sector sources, normally revenue.ie under Revenue's PSI Licence (CC BY 4.0); reproduce the result's own attribution where present, otherwise attribution.source.statement, when citing.
get_revenue_ebrief_changelog
ClaudeGet the Revenue eBrief changelog — recent updates to Revenue guidance and Tax & Duty Manuals. Useful for checking what Revenue guidance has changed recently. Content is reused from public sector sources, normally revenue.ie under Revenue's PSI Licence (CC BY 4.0); reproduce the result's own attribution where present, otherwise attribution.source.statement, when citing.
get_tax_constants
ClaudeGet Irish tax constants. Returns tax bands, rates, USC rates, PRSI rates, tax credits, and thresholds. Useful for understanding the current tax rules without running a full calculation.
get_tax_treaty_text
ClaudeGet the full text of a specific tax-treaty document. Use search_tax_treaties first to find the document. URLs, paths, and bare filenames are all accepted. Not all documents have extracted text available. Content is reused from public sector sources, normally revenue.ie under Revenue's PSI Licence (CC BY 4.0); reproduce the result's own attribution where present, otherwise attribution.source.statement, when citing.
list_calculators
ClaudeList all available Irish tax calculators with their names and descriptions. Returns a list of calculators that can be used with the calculate_tax tool.
list_revenue_document_categories
ClaudeList all available categories for Revenue Tax & Duty Manual documents. Use with search_revenue_documents to filter results by category. Content is reused from public sector sources, normally revenue.ie under Revenue's PSI Licence (CC BY 4.0); reproduce the result's own attribution where present, otherwise attribution.source.statement, when citing.
list_tax_treaty_countries
ClaudeList all countries with an Irish double-taxation treaty. Use with search_tax_treaties to filter results by country. Content is reused from public sector sources, normally revenue.ie under Revenue's PSI Licence (CC BY 4.0); reproduce the result's own attribution where present, otherwise attribution.source.statement, when citing.
search_revenue_documents
ClaudeSearch Irish Revenue Tax & Duty Manual (TDM) documents. Find official Revenue guidance documents by keyword. Returns document titles, categories, and filenames. Use get_revenue_document_text to read the full text of a specific document. Content is reused from public sector sources, normally revenue.ie under Revenue's PSI Licence (CC BY 4.0); reproduce the result's own attribution where present, otherwise attribution.source.statement, when citing.
search_tax_treaties
ClaudeSearch Ireland's double-taxation treaty documents (treaties, protocols, MLI texts). Find treaty documents by keyword and/or country. Returns titles, country, document type, and identifiers. Use get_tax_treaty_text to read the full text of a document. Content is reused from public sector sources, normally revenue.ie under Revenue's PSI Licence (CC BY 4.0); reproduce the result's own attribution where present, otherwise attribution.source.statement, when citing.
