Autoridade Tributária e Aduaneira Improves Tax-Payer Services and Accelerates Collections

Autoridade Tributária e Aduaneira Improves Tax-Payer Services and Accelerates Collections

Autoridade Tributária e Aduaneira (AT), as part of Portugual’s Ministry of Finance, collects and manages all of the country’s personal and corporate income taxes as well as customs fees. The income generated by AT represents approximately 20% of the Portuguese gross domestic product.

Since 1998, AT has made several internet-based services available to the public—including filing annual income declarations for individual taxpayers—and it has continued to expand online offerings over the years. Today, it allows companies and individuals to consult and submit online documents relating to all tax matters.




A word from Autoridade Tributária e Aduaneira

  • “We chose Oracle Exalogic and Oracle Exadata because they offered a higher return on investment and could manage higher data loads, compared to other solutions on the market. Oracle Engineered Systems simplify systems management and streamline implementation, and since they do not require migration of Oracle databases, we were able to easily extend the solution to our legacy-application layer.” – Carlos Santos, Coordinator, IT Systems Core, Autoridade Tributária e Aduaneira

  • Increase IT system performance to reduce response times for internet-based services—such as annual income declarations for individuals—making them more available to all of Portugal’s 10 million taxpayers
  • Create more agile software applications to optimize AT staff productivity
  • Consolidate 150 Oracle WebLogic domains with approximately 200 Java applications onto a single platform for higher performance and easier system management—such as for online authentication, electronic invoice validation, tax declaration submission, and individual fiscal-debt inquiries
  • Improve ability to support large numbers of simultaneous online users—staff and taxpayers—without compromising application-response times
  • Reduce data storage requirements to optimize investment and accommodate data growth cost effectively across the government agency
  • Create a scalable IT platform that can support new features and services—such as digital invoices and shipping documents—and associated data growth


  • Reduced costs and improved application response times by consolidating servers and databases onto two Oracle engineered systems—Oracle Exalogic and Oracle Exadata
  • Enabled internal users to access taxpayer information 50% faster, on average, gaining the ability to support more than 20 million transactions per day, 3.5 million logins per hour, and 5 million concurrent users   
  • Used Oracle Exalogic to reduce response time for information access, achieving 90% performance gains in the data warehouse and a 60% improvement in real-time transaction processing
  • Guaranteed faster and more reliable support for new functions, such as issuing transport slips online and indexing electronic invoices to curb tax evasion
  • Reduced web-based-services’ response times and guaranteed 24/7 availability, significantly reducing complaints
  • Improved service segmentation and data security, creating different layers and information access levels for staff and taxpayers in a single, online platform
  • Achieved 10:1 storage disk consolidation, drastically reducing the storage investment and data warehouse requirements
  • Accelerated the tax collection process, thanks to a highly performing, scalable, and available data infrastructure

Why Oracle

Oracle engineered systems have high availability and a better price point, perform better, and are easier to manage than competing solutions.

“For us, the decision to deploy Oracle Exalogic and Oracle Exadata was common sense and addressed continuity, as AT already used Oracle Database and WebLogic. Oracle Exadata provides great performance, is self-tuning, and doesn’t require a typical database migration between systems. Oracle Exalogic is the only platform optimized for Oracle WebLogic servers and cloud management support. We quickly adapted the Oracle solutions to our specific needs, which enabled us to dramatically improve support for AT’s staff and taxpayers,” said Carlos Santos, coordinator, IT systems core, AT.

Implementation Process

AT implemented Oracle engineered systems in five weeks, including time spent designing and preparing the solution. Currently, AT is migrating 200 Java applications without restricting workflow, administration processes, or service to taxpayers.


AT worked with Timestamp, an Oracle partner, which it has praised for “excellent work,” based on “strong work methods and profound technical expertise,” according to Santos. Timestamp helped AT design and implement the Oracle solution, creating several scripts to automate and enhance the new platform.

Building on a five-year partnership with Timestamp, AT is the first tax authority in Portugal to support electronic, online annual income declarations, invoices, and shipping documents.