Case study

Integrated Tax Administration System: How Bonaire, Saba, and St. Eustatius doubled tax revenue

How Blyce delivered an integrated tax administration system for the Caribbean Netherlands in six months, helping the BES islands collect 26% more revenue than budgeted in year one.

Client

Belastingdienst Caribisch Nederland

Product

Multi Tax Solution

Implemented in

6 months

Focus

Tax Administration

The context

In October 2010, the Netherlands Antilles was dismantled. Bonaire, Saba, and St. Eustatius became special municipalities of the Netherlands, and the old Antillean tax regulations no longer applied. A new tax authority was established: Belastingdienst Caribisch Nederland (B/CN).

To enforce the new tax regime under Dutch constitutional law, B/CN needed an integrated tax administration system that could be operational by January 1st, 2011.

Legislative pressure

New legislation came into force on January 1st, 2011. The system had to be live and operational on that date, with no margin for delay.

Outdated infrastructure

Existing systems posed serious risks to security, continuity, and process efficiency. Backlogs and contaminated data were widespread.

Three-island operation

Organizational units across Bonaire, Saba, and St. Eustatius needed to be merged into a single operation under one platform.

+26%

More tax revenue collected than budgeted in year one. Revenue doubled within five years.

6 months

Implementation time

66%

Citizens reported improved service

Days

To implement new regulation

25%

Reported much improved service

The technical differentiator

Intelligent Process Automation

"All routine procedures are managed by the solution automatically, and only the most complex procedures require human intervention. The system guides users interactively through the process, comparable to GPS guidance."

Most ITAS software is configured manually and rebuilt every time legislation changes. The Multi Tax Solution works differently. Built on Intelligent Process Automation (IPA), the system embeds tax legislation, regulations, and business processes directly into the platform. Routine cases are processed automatically. Only complex cases reach a staff member, and even those are guided step by step like GPS navigation.

For tax administrations where legislative cycles outpace IT budgets, this is the difference between a system that ages well and one that becomes a liability. New regulations can be implemented in days instead of months.

Automated routine case processing Legislation encoded as logic GPS-style staff guidance New regulation implemented in days

How the project ran:

Blyce delivered the system in six months, despite the legislation being finalized at the last minute. The project required short development cycles and a flexible architecture that could adapt as specifications evolved. Blyce provided the full service stack: research, definition study, system design, application development, testing, management, maintenance, operational support, and training.

Process

Three island operations merged into one. Process optimizations rolled out across all units simultaneously.

Platform

Built on the Be Informed platform with full IPA capability. All tax types covered in one integrated tax administration system.

Citizen access

Online portals introduced for the first time. Taxpayers could submit returns digitally instead of queuing at the Tax Office.

Long-term impact

In the years since launch, Blyce has continued to fulfill a linking pin function between business and IT, and between B/CN and other agencies on the BES islands, including local Government, the Public Prosecutor, and the Social Affairs and Labour unit (SZW).

Because of the success of the implementation, the Dutch Tax Administration made the basic functionality of the solution available to other countries in the Kingdom. Other jurisdictions now only need adjustments and extensions, significantly lowering the investment required for a new integrated tax administration system.

According to the report Samen verder bouwen (Curconsult, December 2013), residents experienced the Tax Administration as one of the organizations where services were most improved.

Looking to modernize your tax administration?

The Multi Tax Solution is built for governments managing tax collection across multiple jurisdictions and tax types. If you are evaluating an integrated tax administration system, we can show you what implementation looks like for your context.

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Frequently asked questions about Integrated Tax Administration Systems

What is an Integrated Tax Administration System (ITAS)?

An Integrated Tax Administration System (ITAS) is a software platform that consolidates all tax administration processes into a single, connected system. It covers tax registration, filing, payment, assessment, audit, and enforcement across multiple tax types, replacing the disconnected legacy systems that most tax authorities still rely on. A modern ITAS typically includes online portals for taxpayers, automated case processing for routine transactions, and real-time reporting for management.

What are the benefits of implementing an Integrated Tax Administration System?

A modern ITAS allows tax administrations to increase compliance, reduce operational costs, and improve service to citizens and businesses. By automating routine processing, staff can focus on complex cases and enforcement. Online portals give taxpayers 24/7 access to file returns and pay taxes without queuing at the Tax Office. In the case of the Caribbean Netherlands, the implementation led to 26% more tax revenue collected than budgeted in year one, and revenue doubled within five years.

How long does it take to implement an Integrated Tax Administration System?

Implementation timelines depend on the number of tax types, the complexity of existing legislation, and how many jurisdictions or departments need to be merged. The Multi Tax Solution was delivered for the Belastingdienst Caribisch Nederland in six months, including the merger of three island operations and the implementation of new tax legislation that came into force on the same date as the system launch.

What is the Multi Tax Solution by Blyce?

The Multi Tax Solution (MTS) is an Integrated Tax Administration System developed by Blyce for governments managing tax collection across multiple jurisdictions and tax types. It is built on Intelligent Process Automation (IPA), which embeds tax legislation and business rules directly into the platform, allowing routine cases to be processed automatically and new regulations to be implemented in days instead of months. MTS includes self-service portals for taxpayers, modular components that can operate independently or together, and full coverage of tax levying, collection, and reporting.

Is ITAS software suitable for small island governments?

Yes. Small island governments and developing states face specific challenges that make integrated tax administration systems particularly valuable: limited staff capacity, frequent legislative changes, multiple jurisdictions operating under one tax authority, and pressure to improve revenue collection without raising tax burdens. MTS was built with these constraints in mind. The Caribbean Netherlands implementation across Bonaire, Saba, and St. Eustatius demonstrated that ITAS software can deliver significant revenue and service gains in a six-month timeline.