Samuel A
Data Analyst
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Porfolio
Experiencia laboral
Data Analyst / Tax Compliance Officer
Ghana Revenue Authority - official • Tiempo completo
Nov 2018 - Present • 7 yrs 11 mos
Migrated taxpayer records from a manual system to an electronic system, improving data accessibility and reducing processing inefficiency. Designed and built a Comprehensive Tax Revenue Collection Performance Analysis Dashboard in Power BI, giving management real-time visibility into daily, weekly, monthly and yearly revenue performance. Structured and modelled large volumes of transactional tax data using Power Query and a star-schema approach, enabling reliable and repeatable reporting. Presented dashboard findings and revenue trends to management stakeholders, supporting compliance tracking and revenue forecasting.