Step 2 of 4 · ProjectsBy tax area

179 open source projects for corporate tax.

Every project on the list whose tax area includes Corporate tax, grouped by kind. Entries without a warning come first in each group; the labels mark what to check.

179 projects123 maintained70 on the map40 jurisdictions + globalFacts checked 6 Oct 2026

Tax engines

14 projects

Rules-as-code that compute liabilities, returns and reforms.

accounting-harnessDeterministic accounting and audit harness with an ASC 740 module for the current and deferred provision.Tax engineUS

CIT24AI-assisted Thai corporate income tax provision and compliance platform, from ledgers to filings.Tax engineTHLicence unknown

Cost-of-Capital-CalculatorCalculates the cost of capital and effective tax rates on new investment.Tax engineUS

OpenFisca France EntreprisesMicrosimulation of French firms' taxes and subsidies around the carbon tax, built on OpenFisca.Tax engineFR

OpenTax EngineDeterministic US federal and state tax engine for AI agents with proof trees for each result.Tax engineUS

section382Section 382 and 383 loss limitation engine: ownership-change analyser, annual limitation, anti-abuse rules.Tax engineUSLicence unknown

tax-mindChinese tax risk assessment and compliance decision support: Golden Tax IV rules, four-flow matching, reports.Tax engineCN

DGFiP CAPROMASCAPROMAS, the Java calculator DGFiP uses for corporate income tax on the IS balance return (form 2572).Tax engineFRInactive since 2020

DGFiP CFECalculation code for the CFE, the property component of France's territorial economic contribution.Tax engineFRInactive since 2022Licence unknown

DGFiP CVAECalculation code for the CVAE, France's business value-added contribution.Tax engineFRInactive since 2021

DGFiP IFERCalculation code for the IFER flat-rate tax on energy, rail and telecom network companies.Tax engineFRInactive since 2022

HMRC CT calculationsScala library for UK Corporation Tax return boxes and CT600 computations, including CT600A and CT600J.Tax engineUKArchived

tax-treaty-agentRule-engine pre-review of China's treaties with NL, SG and KR for dividends, interest and royalties.Tax engineCN · NL · SG · KRDemo

taxpro-ukUK FRS 102 corporate tax provision system: AI prepares, a deterministic engine calculates, people approve.Tax engineUKNeeds a paid service

Calculators

20 projects

Small tools that compute one tax for one country.

before-you-payStatic decision tool for Irish outbound withholding tax: which rule decides and at what rate.CalculatorIELicence unknown

beps2-pillar-twoTypeScript app projecting Pillar Two top-up tax for Hong Kong, Singapore and Japan groups under their regimes.CalculatorHK · SG · JPLicence unknown

canada-hsa-calculatorTypeScript library and CLI for Canadian small-business health spending account tax savings, 2025 brackets.CalculatorCAFor individual taxpayers

corp-finance-coreRust finance library with a transfer pricing feature: tested party versus comparables, range, price by method.CalculatorGlobal

indonesia-tax-calculatorIndonesian tax calculator for foreign investors, with withholding tax and treaty rates for 14 countries.CalculatorID

opentaxationMalaysian calculator comparing tax for a sole proprietorship against a private company (Sdn Bhd).CalculatorMYFor individual taxpayers

pillar-two-toolLocal GloBE calculator: ETR, substance carve-out and top-up tax per jurisdiction, QDMTT/IIR/UTPR, GIR export.CalculatorGlobal

tax-provision (Ritesh123423)Browser workpaper for a tax provision: current and deferred tax, movements, journals, ETR reconciliation.CalculatorGlobalLicence unknown

TaxProvision (Singapore)Static single-page Singapore corporate tax provision workpaper, from accounting profit to chargeable income.CalculatorSGLicence unknown

Transizione 5.0 CalculatorLibrary that calculates the Transizione 5.0 super-depreciation benefit for Italian SME AI investments.CalculatorIT

Withholding-Tax-Rates-2026Single-file static calculator of Bangladesh withholding tax rates for 2026; README in Bengali.CalculatorBDLicence unknown

asc740-tax-provisionSix-sheet linked Excel model of a corporate income tax provision under ASC 740 for a hypothetical company.CalculatorUSDemoLicence unknown

cbcr-safe-harbour-monitorMVP that runs the three transitional CbCR safe harbour tests per jurisdiction and year as a risk warning.CalculatorGlobalDemoNeeds a paid serviceLicence unknown

deep-agentic-supply-chain-ai (Hugging Face Space)Gradio demo that rates an intercompany transaction's risk from the gap between tested and benchmark margins.CalculatorGlobalDemo

Impot-CalculateurGo web app computing Tunisian withholding (RAS) by supplier type and VAT for finance professionals.CalculatorTNDemoLicence unknown

permanent-establishment-hubStatic study tool with six permanent establishment calculators across 16 treaties, MLI articles included.CalculatorGlobalDemo

Pillar Two GloBE ETR calculatorPython scripts computing jurisdictional ETR, top-up tax, the UTPR allocation and deferred tax recapture.CalculatorGlobalDemoLicence unknown

Tax-Provision-Day-17-of-30UK corporation tax provision estimator: book-to-tax, marginal relief, IAS 12 and FRS 102 deferred tax.CalculatorUKDemo

Transfer_Pricing (loan spreads)XGBoost model estimating arm's length intercompany loan spreads from synthetic bond data, with a Streamlit UI.CalculatorGlobalDemoLicence unknown

Transfer-Pricing-Risk-AssessmentAndroid app that scores a company's transfer pricing risk from a questionnaire based on the OECD Guidelines.CalculatorGlobalArchivedLicence unknown

Agent skills

19 projects

Packaged tax expertise an AI agent can follow, step by cited step.

Algo-Trading-Skills: transfer pricing for trading groupsSkill with a tested Python engine for intercompany fees in trading groups: cost plus, CUP, TNMM, Berry ratio.Agent skillGlobal

AriaAI tax skillsAgent workspace with 18 PRC tax skills in Chinese, among them APA applications and transfer pricing files.Agent skillCN

ASC-740-SKILLAgent skill for a 12-phase ASC 740 provision: current and deferred schedules, valuation allowance, UTPs, ETR.Agent skillUSLicence unknown

australian-accounting-skills: au-transfer-pricingPrep-only skill reconciling Australian related-party dealings and listing documentation gaps for a specialist.Agent skillAU

bess-epc-engineering: transfer pricing personaKorean agent persona for a battery-storage group's transfer pricing, BEPS and Pillar Two work under the CFO.Agent skillKR · GlobalLicence unknown

CaseMark skills: transfer pricingTwo agent skills: intercompany transactions (FAR, OECD methods, range) and transfer pricing documentation.Agent skillGlobal

everything-claude-finance: transfer pricingClaude Code skill on OECD transfer pricing methods, comparability steps, three-tier documentation and APAs.Agent skillGlobal

finance-skills: transfer pricing documentationFive Chinese CFO-office skills for transfer pricing: master documentation, comparables, BEPS compliance, APA.Agent skillCN

financeskills: deferred tax skillAgent skill for deferred tax under IAS 12 and ASC 740, with a calculator script and evaluations.Agent skillGlobal

Greater-China-Legal: transfer pricing skillsChinese skills for PRC tax compliance, three of them transfer pricing: arm's length checks, risk, BEPS files.Agent skillCNLicence unknown

israeli-tax-withholdingAgent skill with Israeli withholding-at-source rates, certificates and payment calculations.Agent skillIL

ledgerskills: transfer pricing doc outlineClaude Code skill that drafts an OECD Local File outline: FAR analysis, method choice, information request.Agent skillGlobal

legal-ai-skills: transfer pricing documenterSkill that documents an intercompany transaction: FAR, method choice, benchmarking from supplied comparables.Agent skillGlobal

ru-legal: transfer pricingSkill for Russian transfer pricing compliance: controlled transactions, methods, the notice and documentation.Agent skillRU

skillz-for-all: transfer pricing specialistGerman skill for transfer pricing: FAR and DEMPE analysis, method choice and documentation work orders.Agent skillDE

taxlegal: Vietnam transfer pricingVietnamese skill on Decree 132/2020 transfer pricing: related parties, five methods, range, three-tier files.Agent skillVNLicence unknown

tp-skill (deylydu)Claude Code skill for in-house transfer pricing: methods, documentation, financing, APA, MAP, Germany first.Agent skillDE · GlobalLicence unknown

tp-skill (Korean transfer pricing team)Thirteen Korean Claude skills for a transfer pricing team: Local Files, comparables searches, PLI workbooks.Agent skillKRLicence unknown

vanguard-frontier-agentic: transfer pricing and Pillar Two advisorReference skill on OECD transfer pricing methods, BEPS Action 13 files, Pillar Two and six countries' regimes.Agent skillGlobal

MCP

1 project

Open connectors and protocols between agents and legislation, case law and ledgers.

LR Labs MCP connectorMCP client for a hosted engine that screens Indian transfer pricing safe harbour, thresholds and range.MCPIN · USNeeds a paid service

Plugins

1 project

Bundles of skills, tools and agents, installable in one go.

claude-for-ca: transfer pricingClaude Code plugins for Indian CA firms; the transfer pricing plugin covers Form 3CEB and Rule 10D studies.PluginINLicence unknown

APIs

11 projects

Validation, rates, filings and registries you can call directly.

Corporation-Accounting-SkillFastAPI service for an accountant agent: ASC 740 provision checklists, book-to-tax differences, journals.APIUSLicence unknown

ct600-filingCommand-line tool that files a CT600 corporation tax return with HMRC.APIUK

HMRC Country-by-country reportingHMRC's service for uploading country-by-country reports as XML files, with its backend and file validation.APIUK

HMRC Digital Services TaxHMRC's Digital Services Tax service: registration and returns, with a frontend and test stubs.APIUK

HMRC Pillar 2 servicesHMRC's Pillar Two service code: the submission API, the registration frontend and backend, and test stubs.APIUK

HMRC Senior Accounting Officer serviceHMRC's Senior Accounting Officer service: registration, hub, notification and certificate submission.APIUK

NAV DCC-APISchemas and Java models of the Hungarian tax authority's DAC9 (GloBE return), DAC8 and CARF exchange API.APIHU · EU

Skatteetaten skattemeldingenCode and specs for filing the Norwegian tax return: APIs, a validation service, XSDs and a Kotlin calculation.APINO

Skatteetaten suppleringsskattThe Norwegian Tax Administration's notes on GloBE Information Return filing: XML format, XSD check, test file.APINOLicence unknown

WencheFiles annual accounts, the shareholder register return and the tax return for Norwegian limited companies.APINO

tax-treaties (LuckStock)Node microservice serving US tax treaty articles and royalty withholding rates, with country reference data.APIUSInactive since 2017

Tax calendars

1 project

Filing and payment deadlines as open, machine-readable feeds.

tp-calendarGerman Streamlit app listing hard-coded 2024 Local File and Master File deadline rules for 33 countries.Tax calendarGlobalInactive since 2025DemoLicence unknown

Automations

63 projects

Reusable workflows for provisions, reconciliations and compliance runs.

bank_retenue_syncERPNext app for Tunisian withholding certificates: ingestion, reconciliation and issue from invoices.AutomationTN

CBCR-TPChecks a country-by-country report XML file against the OECD schema, Luxembourg rules and safe harbour tests.AutomationLU · GlobalLicence unknown

Comparables_IdentificationScript that ranks candidate comparables by the similarity of their business descriptions to a tested party.AutomationGlobalLicence unknown

CountryByCountrySolution (SARS)C# WinForms app that builds South Africa's SARS country-by-country declaration XML from Excel and checks it.AutomationZALicence unknown

globe (GIR engine)Reads a GloBE Information Return XML, validates it, applies the OECD's 2026 corrections and exports a redline.AutomationGlobalLicence unknown

oecd-tp-searchSemantic search over the 2022 OECD Transfer Pricing Guidelines by paragraph, with citations and GPT analysis.AutomationGlobalLicence unknown

open-globexmlJava web app that prepares, XSD-checks and exports GloBE Information Return XML, with French 2259-SD helpers.AutomationFR · Global

taxflowETL command line that segments each entity's P&L into activities by rules and loads SQLite for dashboards.AutomationGlobalLicence unknown

TP reconciliation P&L builderAdds a reconciliation P&L per trading partner, with check formulas, to a transfer pricing Excel workbook.AutomationGlobalLicence unknown

tp_autoFills a Word TNMM transfer pricing report template from benchmarking and tested-party margin workbooks.AutomationAELicence unknown

TP1-InterCompany-Pricing-PolicyFlask API with RAG over OECD and Indian transfer pricing documents that drafts a seven-section pricing policy.AutomationIN · GlobalLicence unknown

transfer_pricing_cycle_toolPython CLI turning SAP price-list files into SAP upload templates and communication files for a pricing cycle.AutomationGlobalLicence unknown

UGtaxBuilds a journal, balance sheet and E-Bilanz XBRL from camt.053 bank exports for German holding UGs.AutomationDE

12_taxobservatoryScripts that gather, parse and visualise declared tax data from public country-by-country reports.AutomationEU · GlobalInactive since 2024Needs a paid service

ai_tax_agentLangChain agent that scores and simplifies the US tax code, using the IRC, IRS bulletins and SOI data.AutomationUSInactive since 2025

AI-Transfer-Pricing-Intelligence-EnginePython engines for arm's length tests, comparables, FAR, risk and scenarios over a sample case dataset.AutomationGlobalDemoLicence unknown

Automating Comparable Company Search in Transfer PricingTwo notebooks that scrape company web pages and rank comparables by TF-IDF cosine similarity.AutomationGlobalDemoLicence unknown

beps-pillar-two-data-gap-copilotStreamlit demo that maps source data to Pillar Two fields, finds data gaps and triages the safe harbours.AutomationGlobalDemoLicence unknown

BM_CCRails app to review and filter company data exported from Orbis or Diane for transfer pricing benchmarking.AutomationGlobalInactive since 2022Needs a paid serviceLicence unknown

CbCR_to_Excel (Hugging Face Space)Gradio app that cuts country-by-country report tables out of PDFs into Excel files, with manual treatment.AutomationGlobalInactive since 2025

cbcr-foundry-rawCbCR effective-versus-statutory rate pipeline on Palantir Foundry that flags filings for audit; needs Foundry.AutomationGlobalNeeds a paid serviceLicence unknown

CbCRRiskAnalyzerSpring Boot and React app that stores CbCR data per company and country and scores transfer pricing risk.AutomationGlobalDemoLicence unknown

CbcXml (UK)C# tool that turns a fixed Excel template into UK country-by-country report XML and validates it.AutomationUKInactive since 2020Licence unknown

ComparableBotUiPath robot and VBA saving US comparables' 10-K filings from the SEC and building a TNMM adjustment workbook.AutomationUSInactive since 2021DemoNeeds a paid service

deferred-tax-agentClaude-assisted local GAAP depreciation research and IFRS versus local GAAP deferred tax on dummy data.AutomationGlobalDemoNeeds a paid serviceLicence unknown

Due Diligence AgentsM&A due diligence agents for data rooms, with a tax agent for transfer pricing, tax attributes and structure.AutomationGlobalNeeds a paid service

gdt-invoice-hubVietnamese VAT invoice management with risk assessment, foreign-contractor-tax detection and tax forecasting.AutomationVNNeeds a paid serviceLicence unknown

GenAI_Transfer_Pricing_Automation_PrototypeLangChain RAG prototype that fills a Word transfer pricing report template with Llama 3 text and a P&L table.AutomationGlobalDemoLicence unknown

GMT24Next.js prototype that maps group data to a Pillar Two model, runs GloBE calculations and prepares a GIR.AutomationGlobalDemoLicence unknown

llmthon-tp-benchmarkPlaywright tool visiting each comparable's website; Gemini accepts or rejects it and a screenshot is kept.AutomationGlobalDemoNeeds a paid serviceLicence unknown

MergeRiskAIAI M&A tax risk assessment for due diligence: pulls liabilities, audit flags and contingencies from documents.AutomationGlobalNeeds a paid serviceLicence unknown

oecd-tpg-viewer-NACE-look-upStatic site with NACE and NAICS code finders and crosswalks, plus a small OECD Guidelines paragraph viewer.AutomationGlobalInactive since 2025Demo

OTP-PlatformOperational transfer pricing demo: processes, a calc studio, an intercompany allocation engine, audit trail.AutomationGlobalDemoLicence unknown

OTP-SynthDataStreamlit generator of synthetic intercompany flows with a rule engine that allocates profit by function.AutomationGlobalDemoLicence unknown

pfizer-tp-benchmarkStreamlit TNMM workpaper: tested party, rejection cascade, profit level indicators, range and Excel export.AutomationDE · EUDemoNeeds a paid service

Pillar-Two (DMTT authority demo)Next.js front end for a tax authority to manage, audit and assess domestic top-up tax filings, on mock data.AutomationAEDemoLicence unknown

pillar-two-tax-analyticsdbt models on Snowflake that compute GloBE income, covered taxes and top-up tax for a synthetic group.AutomationGlobalDemoNeeds a paid serviceLicence unknown

pillar2 (risk dashboard)Static HTML and JavaScript Pillar 2 tax-risk dashboard built on synthetic insurance scenario data; one commit.AutomationGlobalDemoLicence unknown

Pillar2_New_WorkingSAP CAP prototype with an SAPUI5 interface and Excel output for a Pillar 2 project; one of several copies.AutomationGlobalDemoLicence unknown

pillar2-demo (Poland)Streamlit MVP that fills Poland's GLB-Z2 and GIR-1 forms, validates the XML against the XSD and saves it.AutomationPLDemoLicence unknown

Pillar2Xml (SARS)WinForms proof of concept that builds a SARS global minimum tax XML with a GloBE body from sample values.AutomationZADemoLicence unknown

Recommender-System-for-BenchmarkingScript ranking S&P 500 companies by similarity of margin, markup and sector as transfer pricing comparables.AutomationUSInactive since 2020DemoLicence unknown

SatriataskRiskScreeningReact front end scoring Indonesian listed companies for transfer pricing risk and debt or royalty shifting.AutomationIDDemoLicence unknown

Task002-etr-risk-cockpitPython toolkit computing entity ETR metrics, running nine rule-based controls and writing CSV, Excel, a memo.AutomationGlobalDemoLicence unknown

Task004-payments-tax-governance-cockpitPayments tax governance toolkit simulating product-launch tax control and risk review across jurisdictions.AutomationGlobalDemoLicence unknown

Tax Observatory CbCR extraction demoStreamlit demo of the EU Tax Observatory pipeline that downloads public CbC reports and extracts their tables.AutomationGlobalInactive since 2025

tax-data-engineering-labValidates synthetic intercompany line items with five rules and builds a seller-by-buyer matrix in euros.AutomationGlobalDemo

Tax-Provision-AgentAI tax provision agent on AWS Bedrock with 19 tools, among them GILTI, FTC, BEAT, Pillar Two and 25 US states.AutomationUSNeeds a paid service

tp_appStreamlit app: entities, transactions, interquartile benchmarking (TNMM, gross margin, CUP) and a DOCX report.AutomationGlobalInactive since 2025DemoLicence unknown

tp-agent (India Local File)Python workflow for an Indian Local File: ingests case files and builds a cited functional analysis (phase 1).AutomationINDemoLicence unknown

tp-assistant (TP ORCA)Next.js app writing risk, control, test and evidence frameworks for a transfer pricing scenario with Claude.AutomationGlobalDemoNeeds a paid serviceLicence unknown

TP-OPP-APPParses Luxembourg annual accounts for intercompany items and scores transfer pricing advisory opportunities.AutomationLUNeeds a paid serviceLicence unknown

TP-WorkspaceFilters term-loan tranches from a loan-data export into accepted and rejected sheets.AutomationGlobalInactive since 2025Licence unknown

TPAPROStreamlit app testing whether two parties are related or connected persons under UAE transfer pricing rules.AutomationAEInactive since 2025Needs a paid serviceLicence unknown

transfer-pricing-agent (UAE)Docker app that answers questions over the UAE transfer pricing guide with OpenAI and vector search.AutomationAEInactive since 2025Needs a paid serviceLicence unknown

transfer-pricing-application (TP Copilot)Hackathon transfer pricing copilot in Next.js: dashboard, FAR, benchmark, report and audit views on demo data.AutomationGlobalDemoLicence unknown

transfer-pricing-arms-length-analysisWeb app and CLI: Claude extracts tested-party facts, EDGAR comparables are screened, a TNMM range goes to PDF.AutomationUSDemoNeeds a paid serviceLicence unknown

transfer-pricing-benchmarking-toolTNMM benchmarking pipeline on Yahoo Finance data: screening, profit level indicators and interquartile range.AutomationUSDemo

transfer-pricing-intelligence-platformDjango app testing a royalty rate against an arm's length range, each jurisdiction's rule stated in a PDF.AutomationES · EU · DE · ITDemo

Transfer-Pricing-ManagerWeb app to record group companies, related-party transactions and the status of each transfer pricing file.AutomationGlobalInactive since 2022DemoLicence unknown

transfer-pricing-pipelineCleans a sample ERP export, derives each entity's role and tests its margins against benchmark ranges.AutomationGlobalDemo

transfer-pricing-platformFastAPI service scoring transfer pricing risk from operating margin and return on assets against fixed ranges.AutomationGlobalDemoLicence unknown

TurboTPLangGraph and Gemini workspace for transfer pricing research, Local and Master File drafts, a RAG assistant.AutomationUS · GlobalDemoNeeds a paid serviceCC BY-NC 4.0

Tax datasets

47 projects

Rates, treaties and statistics, open and versioned.

code_tcja_profit_shiftingNotebooks and data for Garcia-Bernardo, Janský and Zucman on whether the TCJA cut profit shifting by US MNEs.Tax datasetUSLicence unknown

GAAP-Implementation-ToolkitTracks how US public companies implement standards, ASC 740 among them, from SEC EDGAR data.Tax datasetUS

International Technology Licensing, IP Rights and Tax Havens (Santacreu) replicationStata and Matlab replication package for Santacreu (REStat 2026) on technology licensing, IP and tax havens.Tax datasetGlobal

myTransferPricing referenceSummaries of 18 OECD transfer pricing country profiles, with a prompt that reviews a Local File against one.Tax datasetAT · BE · BR · DK · FR · DE · GR · IE · IT · LU · NL · PL · SG · ES · SE · CH · UK · US

profit-shifting-explorerPlotly web explorer of country-year and industry-year profit-shifting estimates from Delis et al. (JAE 2025).Tax datasetGlobalLicence unknown

stata-project-profit-shiftingStata project that replicates and updates the Atlas of the Offshore World profit-shifting series (TWZ 2023).Tax datasetGlobalLicence unknown

Tax Compliance and Transfer Pricing survey (TRR 266)Results and questionnaire of a survey of German firms on tax compliance and transfer-pricing complexity.Tax datasetDELicence unknown

Tax Treaty Overview (Taiwan Ministry of Finance)Taiwan's list of income tax treaties and treaty withholding rates, three CSV files under an open licence.Tax datasetTW

unitary-taxation (Tax Justice Network)Python pipeline estimating each country's revenue change under global unitary taxation from OECD CbCR data.Tax datasetGlobal

us-dividend-whtCC0 dataset of US dividend withholding rates for non-residents by country of residence, CSV and JSON.Tax datasetUS · Global

Are Spanish companies involved in profit shifting? (data)Amadeus firm panel (2005-2014) behind a 2017 paper on profit shifting between Spain and OECD and EU countries.Tax datasetESInactive since 2017

Atlas of the Offshore World (data downloads)EU Tax Observatory downloads: country estimates of profits shifted and tax lost, 2015-2020.Tax datasetGlobalInactive since 2023Licence unknown

CBCR (Dan-Kolar)Jupyter notebook and CSV of IRS country-by-country statistics; seminar material for a public economics course.Tax datasetUSInactive since 2022DemoLicence unknown

China in Tax Havens (replication)Stata, R and shell scripts plus public GCAP input data to replicate 'China in Tax Havens' (AEA P&P 2023).Tax datasetCN · GlobalInactive since 2024

CIAT Tax Treaty DatabaseExcel database of double tax treaties and information exchange agreements of CIAT member countries.Tax datasetGlobalInactive since 2024Licence unknown

Corporate tax database (Todtenhaupt)Stata dataset of corporate tax rules for 46 EU and OECD countries: rates, SME thresholds, WHT, depreciation.Tax datasetGlobalInactive since 2022

dbs_empirical_analysisPython and Stata scripts for a master thesis on how MNEs' unrelated-party revenues respond to corporate tax.Tax datasetGlobalInactive since 2023Licence unknown

ETR_GMT_replication (World Bank)Stata and R code to reproduce World Bank work on effective tax rates, firm size and the global minimum tax.Tax datasetGlobalInactive since 2025

EU Tax Observatory CbC reports (Data For Good)Some 400 public country-by-country reports (PDF, XLS) collected by the EU Tax Observatory, with CSV extracts.Tax datasetGlobalInactive since 2024Licence unknown

EU Tax Observatory tax deficit report (code and data)Input data, Stata do-files and output tables behind the EU Tax Observatory's 2021 tax deficit report.Tax datasetEU · GlobalInactive since 2021Licence unknown

Generation of machine-readable CbC reports with LLMs (Yusyn) dataOutputs of nine LLMs asked to turn eight text CbC test cases into OECD CbC XML (schema v2.0), as JSON and XML.Tax datasetGlobalInactive since 2025

Global profit shifting from CbCR micro data (Fuest et al.)Stata replication package for Fuest et al. (JEEA) on profit shifting measured in German CbCR micro data.Tax datasetDE · GlobalInactive since 2024

global-tax-treaty-networkNetwork analysis of bilateral tax treaties from OECD treaty-based withholding rate data, with CSV outputs.Tax datasetGlobalDemo

How Much MNCs Pay in Taxes (Godar) replicationStata, R Markdown and Excel files behind a paper on what MNCs pay in tax, from voluntary CbC reports.Tax datasetGlobalInactive since 2022

Knocking on Tax Haven's Door (replication)Stata do-files and country and sector data for a REStat 2018 paper on French export prices to tax havens.Tax datasetFRInactive since 2019

Long way to tax transparency (Godar) replicationStata code and hand-collected data on ten voluntarily published country-by-country reports, with outputs.Tax datasetGlobalInactive since 2023Licence unknown

MNCs and Tax Havens: CbCR (Garcia-Bernardo, Janský, Tørsløv)Jupyter notebooks and data behind a 2021 paper on effective tax rates and profit shifting to tax havens.Tax datasetUS · GlobalInactive since 2021

Monitoring Tax Compliance by MNEs: Chile (Bustos et al.) dataAEA P&P 2019 replication data for Bustos, Pomeranz, Vila-Belda and Zucman on monitoring MNEs in Chile.Tax datasetCLInactive since 2019Licence unknown

Multinationals' Sales and Profit Shifting in Tax Havens (data and code)Data, code and results for Laffitte and Toubal on US multinationals' sales and profits booked in tax havens.Tax datasetGlobalInactive since 2021Licence unknown

Offshore Profit Shifting and Aggregate Measurement (data and code)Data and code for Guvenen et al. on how US MNEs' profit shifting distorts US macro statistics, 1983-2016.Tax datasetUSInactive since 2022Licence unknown

Offshore_Profit_Shifting_Replication.jlJulia port of the Guvenen et al. (AER 2022) replication package on US offshore profit shifting measurement.Tax datasetUSInactive since 2023

Phantom FDI database (Damgaard, Elkjaer, Johannesen)Global FDI network 2009-2017 split into real and phantom FDI, with Stata code and a tax-exposure dataset.Tax datasetGlobalInactive since 2022Licence unknown

phd_thesis_rep (Heitmüller)R code and data behind the figures and tables of Frederik Heitmüller's PhD thesis on international tax rules.Tax datasetGlobalInactive since 2023Licence unknown

pillar-two-instruct1,463 synthetic instruction-response pairs on the OECD Pillar Two GloBE rules, for LLM research and tuning.Tax datasetGlobalDemo

Profit shifting and revenue losses (Janský, Palanský) replicationStata do-file and results table for Janský and Palanský (2019) on profit shifting and tax revenue losses.Tax datasetGlobalInactive since 2021Licence unknown

Profit Shifting in a Globalized World (Dharmapala) dataAEA P&P 2019 replication data: a Stata dataset coding OECD countries' anti-avoidance measures 2000-2014.Tax datasetGlobalInactive since 2019Licence unknown

replication_cbcr (formulary apportionment)Jupyter notebook allocating US MNEs' IRS CbCR profits under formulary apportionment variants (GFA, IMF, OECD).Tax datasetUS · GlobalInactive since 2019Licence unknown

Royalty Taxation under Tax Competition (Juranek et al.) dataExcel data for Table 1 of Juranek, Schindler and Schneider (CJE 2023) on royalty taxation and profit shifting.Tax datasetGlobalInactive since 2023CC BY-NC 4.0

Searching for Profit-Shifting in China (replication)Stata firm sample (1998-2011) and programs reproducing 'Searching for Profit-Shifting in China' (Reed et al.).Tax datasetCNInactive since 2018

SEZs and BEPS Action 5 (Heitmüller, Mosquera)Zenodo snapshot of an R repository with data and code for a paper on special economic zones and BEPS Action 5.Tax datasetGlobalInactive since 2021

tariffs-profit-shiftingPython code and data for a capstone paper on whether Section 301 tariffs made US firms shift profits abroad.Tax datasetUSDemoLicence unknown

TaxGraphKnowledge graph of multinationals and their links, where tax avoidance strategies are subgraph queries.Tax datasetGlobalInactive since 2020

Taxing across Borders (Zucman) dataJEP 2014 replication data for Zucman's 'Taxing across Borders': one Excel workbook and a short ReadMe.Tax datasetUS · GlobalInactive since 2019Licence unknown

Territorial Tax Reform and Profit Shifting (Hasegawa) replicationStata do-files for Hasegawa's paper on territorial tax reform and profit shifting by US and Japanese MNEs.Tax datasetUS · JPInactive since 2024

The Missing Profits of Nations (replication)Replication archive for Tørsløv, Wier and Zucman's The Missing Profits of Nations (REStud): data and Stata.Tax datasetGlobalInactive since 2022

Transfer Pricing by Multinational Firms (Cristea, Nguyen) dataReplication data for Cristea and Nguyen on transfer pricing in Danish exports, 1999-2006.Tax datasetDKInactive since 2021Licence unknown

TransferPricingSurvey (TRR 266)Aggregated Excel results of a 2020-21 survey of German MNE tax managers on inconsistent tax transfer prices.Tax datasetDEInactive since 2022

Benchmarks

1 project

Evals that show whether a model reasons about tax, or guesses.

Legora transfer pricing caseEvaluation case for AI: draft a transfer pricing Master File from case documents, graded on 175 criteria.BenchmarkGlobal

Models

1 project

Open AI models trained or tuned for tax text.

tax-position-risk-prototypeResearch prototype classifying uncertain tax positions with knowledge-guided features on synthetic data.ModelUSDemoLicence unknown

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Next · Step 3 of 4The gapsThe activities with no open project yet, and the partly covered ones, with what to build on.