Tax Technology Specialist
NELISSA MARTIS
Business Analist TAX
NELISSA MARTIS
Tax Technology Specialist
NELISSA MARTIS
Recently reduced the preparation of a fiscal unity from a full working week to 10 minutes through smart automation using existing systems.
With a background in Tax Law & Economics, I focus on the data and automation side of tax work while remaining active in corporate income tax practice. I have also completed training in data engineering and back-end development, which supports my work with data, models and practical tax solutions.
TAX
Tax work is becoming more digital and reporting requirements continue to grow. This can be challenging, but also creates opportunities to work smarter. I see technology as a tool to bring more structure and clarity into tax processes.
I take a structured approach to tax processes, where repetitive tasks are organised into logical workflows and, where possible, supported by automation. The goal is not automation for its own sake, but improving consistency, efficiency and quality in the overall tax process.
TAX
I work from a full process perspective rather than handling tasks in isolation, looking at the entire tax cycle from preparatory work to filing and finalisation to keep the process organised and consistent. When approaching a project, I start with the broader direction: understanding the existing setup, identifying requirements and objectives, and mapping out practical solutions.
At the same time, I remain closely involved in day-to-day tax practice and filings, which keeps my perspective grounded. I take a flexible approach, adjusting solutions as new insights or needs arise. Where useful, I develop or support simple applications or models that help streamline the tax workflow.
tax
I work from a full process perspective rather than handling tasks in isolation, looking at the entire tax cycle from preparatory work to filing and finalisation to keep the process organised and consistent. When approaching a project, I start with the broader direction: understanding the existing setup, identifying requirements and objectives, and mapping out practical solutions.
I remain closely involved in day-to-day tax practice and filings, which keeps my perspective grounded. I take a flexible approach, adjusting solutions as new insights or needs arise. Where useful, I develop or support simple applications or models that help streamline the tax workflow.
- Tax Law & Economics (BSc.)
- Back-End Development & System Integrations
- Data Engineering & Data Modelling
- Advanced Excel Modelling & Financial Analysis
- Data Visualization & Dashboards
- Web Technologies
tax & data projects
tax & financial modelling
Built with
tax & financial modelling
Built with
upcoming tax & tech
Automated Tax equity reconciliation
Phase: Concept/ Structuring
A workflow automation tool that extracts financial data from PDFs and automatically generates a tax equity roll-forward (vierkantstelling). It performs account mapping, categorisation and reconciliation logic, allowing tax professionals to focus on analysis instead of manual data preparation. By digitising and structuring source data, the tool reduces preparation time from days to minutes and minimizes manual reconciliation errors.
Automated Tax Reconciliation Template
Phase: Internal Use – Ongoing Optimization
A structured Excel/Power Query template designed to automate recurring tax reconciliation work (vierkantstelling). The model standardises account mapping, roll-forwards and balance sheet links, allowing yearly updates with minimal manual input. Built to streamline corporate income tax compliance and improve consistency across entities.
Automated Tax equity reconciliation
Phase: Concept/ Structuring
A workflow automation tool that extracts financial data from PDFs and automatically generates a tax equity reconciliation. It performs account mapping, categorisation and reconciliation logic, allowing tax professionals to focus on analysis instead of manual data preparation. By digitising and structuring source data, the tool reduces preparation time from days to minutes and minimizes manual reconciliation errors.
Automated Tax Reconciliation Template
Phase: Internal Use – Ongoing Optimization
A structured Excel/Power Query template designed to automate recurring tax reconciliation work. The model standardises account mapping, roll-forwards and balance sheet links, allowing yearly updates with minimal manual input. Built to streamline corporate income tax compliance and improve consistency across entities.