How Developing Asia Can Raise Revenue Without Higher Tax Rates

The challenge is not always low tax rates.

Many economies in developing Asia collect relatively low levels of tax revenue compared with advanced economies, limiting their ability to finance development priorities. The Organisation for Economic Co-operation and Development’s (OECD) Revenue Statistics in Asia and the Pacific shows that the region’s average tax-to-GDP ratio remains far below the OECD average. Recent work by the International Monetary Fund and the World Bank also emphasizes the growing importance of domestic resource mobilization as economies face higher debt service, tighter financing conditions, and rising spending needs related to the Sustainable Development Goals and climate resilience.

The underlying challenge is often not the statutory tax rate. Tax administrations may contend with narrow tax bases, widespread informality, fragmented information systems, weak compliance management, and labor-intensive procedures. These weaknesses leave revenue uncollected while increasing costs for businesses and individuals that already comply with the law. Cross-country evidence indicates that sustained tax administration reforms can generate additional revenue equivalent to 2–3 percentage points of gross domestic product. Improving administration can therefore produce substantial and potentially durable gains without relying mainly on higher rates.

Technology enables reform but does not constitute reform itself.

Digital transformation is one of the most practical tools for addressing these constraints. Across Asia, revenue authorities are replacing paper-based procedures with digital platforms through which taxpayers can register, file returns, make payments, and communicate with tax authorities. Digital tax administration can lower compliance and administrative costs, collect revenue more efficiently, improve transparency, and strengthen taxpayer services.

The central lesson from country experience, however, is that technology is an enabler, not the reform itself. Successful transformations begin by simplifying legislation and procedures, redesigning services around taxpayers, integrating reliable third-party data, and adopting risk-based compliance management. Digital tools can then automate and scale these improved processes. Moving complex, fragmented, or discretionary procedures online may simply perpetuate inefficiencies and even create new compliance burdens.

Modern tax administrations also need to move beyond broad, resource-intensive audits. Data analytics and, where appropriate, artificial intelligence can help identify patterns of noncompliance. Authorities can match information from customs, banks, business registries, and third-party reporting to detect discrepancies and focus enforcement on higher-risk cases. These tools depend on reliable data, clear rules for data sharing, strong governance, cybersecurity, capable staff, and sustained change management.

Country experience shows measurable results.

India’s Goods and Services Tax Network provides a unified online platform for registration, filing, and payment, while e-invoicing supports invoice verification and compliance. The taxpayer base increased from 6.65 million in 2017 to 15.1 million in 2025, and gross collections reached ₹22.08 trillion ($253 billion) in fiscal year 2025. These results highlight the value of a unified platform accompanied by continuous system improvements.

Singapore has focused on integrated, taxpayer-centered services, including prefilled tax returns, electronic filing, and online taxpayer accounts. Its cost of collection declined from 0.84 cents per dollar collected in fiscal year 2017 to 0.58 cents in fiscal year 2024, demonstrating significant gains in administrative efficiency.

The Republic of Korea illustrates the potential of electronic invoicing when supported by integrated taxpayer databases and analytics. E-invoicing coverage increased from 15% of transaction value to 99.8% in the first year it became mandatory, and 73% of surveyed users reported improved taxpayer services. Better information strengthens enforcement while reducing unnecessary audits of compliant businesses.

Indonesia’s experience shows why digital systems should be combined with institutional reform, stronger enforcement, improved taxpayer databases, and better compliance management. Tax administration reforms are estimated to have generated more than half of the 1.1-percentage-point increase in tax revenue relative to GDP during 2002–2006, underscoring the importance of phased implementation rather than a technology-only approach.

Georgia demonstrates the complementary value of simplification. Electronic filing increased from 1% in January 2009 to more than 85% by the end of 2010, reducing taxpayers’ compliance burden. Alongside tax simplification and institutional reforms, tax revenue rose from about 15% of GDP in 2003 to 25% in 2011. This broader reform package, rather than digital filing alone, helped create the conditions for improved performance.

Taken together, these experiences point to a common pattern. Digital platforms can expand coverage, lower collection costs, and improve services, but their effect depends heavily on the reforms around them. Unified systems need continuous improvement; e-invoicing needs reliable taxpayer information; and analytics need high-quality data and a clear compliance strategy. Simplification also matters because taxpayers, especially small businesses, must be able to understand and use the new systems. The relevant lesson for developing Asia is therefore not to copy a single country’s technology, but to adapt the combination of institutions, processes, data, and tools to local capacity and taxpayer needs.

Build the foundations before adding advanced tools.

Governments should begin with a diagnostic of administrative weaknesses and taxpayer needs, followed by simplification of tax rules, forms, and business processes. The next priorities are establishing a reliable taxpayer register and unique identification system, strengthening data governance, and developing secure, interoperable platforms for registration, filing, payment, and taxpayer accounts. E-invoicing, advanced analytics, and artificial intelligence should be introduced only after these foundations are functioning and sufficient high-quality data are available.

Institutional prerequisites include sustained political leadership, clear accountability for reform, an enabling legal framework for electronic transactions and data sharing, predictable financing, and coordination across tax, customs, banking, and business-registration agencies. Technical conditions include reliable connectivity, common data standards, cybersecurity, privacy protection, and systems that can be maintained locally. Staff skills, taxpayer consultation, change management, and accessible support for small businesses are equally important. Reform should be phased, tested through pilots, and monitored against measurable indicators for service quality, compliance costs, filing, payment, and revenue.

Customs modernization should form part of this broader transformation. Electronic declarations, automated risk management, coordinated border management, and digital documentation can reduce clearance times while supporting revenue collection. Better information sharing can help customs authorities identify under-invoicing, fraud, and smuggling, advancing both trade facilitation and fiscal performance.

The longer-term objective should be compliance by design: integrating tax obligations into taxpayers’ normal business systems so that compliance becomes easier and noncompliance harder. Achieving this objective requires coordinated investment in people, processes, data, and technology—not merely new software. It also requires governments to design services around taxpayers while directing enforcement toward higher-risk cases.

For developing Asia, the implication is clear. Governments have the opportunity to mobilize more revenue without relying mainly on higher statutory tax rates, but digitalization will deliver results only when it supports wider administrative and institutional reform. A sequenced, taxpayer-centered, and risk-based approach can create fiscal space for infrastructure, health, education, climate action, and debt management while reducing unnecessary burdens on compliant taxpayers and businesses. In this way, stronger tax administration can contribute to decent work and economic growth, more effective institutions, and stronger domestic resource mobilization.