Diagnostics · Automation · Governance
Turning tax data into a competitive advantage
taxData applies deep tax expertise through modern data engineering. We help professional service providers automate tax workflows, structure fragmented data, and build governance frameworks that hold up under scrutiny.
Built by a tax practitioner, not a software vendor.
Who we are
Tax expertise, built for a data-driven world
Tax Data Analytics (taxData) is a Luxembourg-based firm that supports professional service providers in the design and implementation of data-driven tax solutions, from transfer pricing reporting and DAC6 compliance to tax correspondence analysis and tax governance reporting. We deliver solutions tailored to your systems, workflows, and regulatory environment.
Our work sits at the intersection of international tax, data engineering, and real-world operational experience in Luxembourg. Whether your data sits in complex systems, spreadsheets, or both, we start from your current setup and build practical, scalable solutions from there.
Our approach
A clear, structured approach
Four phases, each with a clear deliverable. You see results before the next phase begins.
Assess
We perform a structured assessment of your data landscape, including systems, data quality, and governance frameworks, to identify risks and opportunities.
Design
We define a target-state solution aligned with your operational requirements, encompassing data models, reporting frameworks, and automation opportunities.
Implement
We extract, standardise, and integrate data across multiple sources, establishing a consistent and controlled data environment.
Enable
We deliver actionable insights and embed capabilities that enhance efficiency, strengthen control frameworks, and support decision-making.
Solutions
Data-driven tax solutions for complex environments
Nine capabilities across Diagnostics, Automation, and Governance. Plus the Tax Assistant, a cross-cutting AI product. Pick one or combine several. Start where the need is sharpest.
Tax Data Diagnostics
A structured review of your tax data environment. You leave knowing what is working, what is not, and what to fix first.
Read moreTax Correspondence Management
Automated reading and triage of inbound tax authority correspondence. Every letter is logged, deadlines are flagged, and nothing falls through because it landed on the wrong desk.
Read moreProcess Automation
Recurring manual steps identified and removed from the working day. Less time spent on data preparation, fewer errors at filing, and more capacity for work that requires judgement.
Read moreTax Position Register
Filing positions, rulings, and interpretive decisions captured in a structured register per client. The knowledge that currently lives in people's heads, made searchable and audit-ready.
Read moreTransfer Pricing Documentation
The annual transfer pricing cycle, carried forward rather than rebuilt from scratch. Functional analyses updated, benchmarking decisions captured as they are made, every accept and reject defensible.
Read moreAnalytics & Reporting
Operational reporting across your tax practice. Filing deadlines, workload, and client status visible at management level without asking anyone.
Read moreData Integration
Fragmented data sources connected into a single, reliable pipeline. One consistent version of the numbers across your working papers, filings, and returns.
Read moreSubstance Monitoring
Economic substance indicators tracked against Luxembourg regulatory thresholds. Gaps flagged before filing deadlines, evidence-ready summaries produced when you need them.
Read moreTax Governance Insights
Risk patterns and compliance gaps surfaced across your full client portfolio. Every insight traceable to the underlying positions, filings, and correspondence data.
Read moreTax Assistant
A query-based AI assistant for Luxembourg tax. Delivered as four modules: Tax Treaty, Corporate Tax, VAT, and Transfer Pricing. Each module is grounded in a defined body of law, and every answer carries its source citations and is marked as a reviewable draft.
The team
Built and delivered by a specialist
You work directly with the founder from first call to final deliverable. No handoffs, no junior team.
Ruben brings more than two decades of tax experience, including roles in tax structuring at PwC across multiple jurisdictions, followed by extensive advisory work in Luxembourg.
His expertise covers corporate taxation, transfer pricing, and cross-border structuring, complemented by formal training in computer science with a focus on machine learning and artificial intelligence. That background lets him design data solutions directly from the tax technical requirements, rather than briefing a separate team to build them.