Constrained by their geography, Pacific Island nations like Tokelau, Niue, and the Marshall Islands face a unique fiscal reality where non-tax revenues completely eclipse their total tax collections. To sustain public finance, these economies rely on an alternative lifeline: vital foreign grants and the innovative monetisation of their vast oceanic resources.
The OECD has published a report titled “Revenue Statistics in Asia and the Pacific 2026,” on 30 June 2026, which delivers a comprehensive analysis of fiscal trends and tax revenues across 38 economies from 1990 to 2024.
This report utilises a standardised methodology to present internationally comparable data, highlighting that the regional average tax-to-GDP ratio rose to 19.7% in 2024. Key findings indicate that while taxes on goods and services remain the primary revenue source for most nations, there is a growing reliance on personal and corporate income taxes.
In the Asia-Pacific region, the public finance landscape exhibits extreme structural disparities. While traditional taxation is the primary engine for most governments, non-tax revenues (NTR) play an outsized role in specific economies. The contrast is staggering: non-tax revenues represent a mere 1.1% of Gross Domestic Product (GDP) in Sri Lanka, but an astonishing 171.9% of GDP in Tokelau.
In 2024, Tokelau, Niue, the Marshall Islands, and Nauru stood out as the only economies in the region where non-tax revenues actually exceeded total tax revenues.
Understanding this heavy reliance on alternative funding requires examining the unique structural, geographic, and economic realities of these nations.
The constraints on traditional tax collection
Across the region, expanding the traditional tax base remains a complex challenge. Even though average tax-to-GDP ratios increased across the Asia-Pacific in 2024, 20 out of 36 evaluated economies actually saw their individual ratios fall, often because their nominal GDP outpaced their capacity to collect taxes.
Expanding the tax net is particularly complicated by the presence of large informal and hard-to-tax sectors, such as agriculture and small-scale retail. These sectors often operate in highly decentralised, cash-based environments with minimal record-keeping, making it inherently difficult to assess taxable income. While experts now recommend focusing compliance efforts strictly on high-potential taxpayers rather than pursuing broad, sweeping formalisation campaigns, structural constraints still severely limit domestic tax potential for many developing nations.
Geographic vulnerability and the SIDS reality
For Small Island Developing States (SIDS) in the Pacific, reliance on non-tax revenue is largely a matter of geographic destiny. These nations face a shared set of fundamental challenges, including extreme remoteness, heightened exposure to natural disasters, and highly constrained economic diversification. These inherent vulnerabilities make it exceptionally difficult to develop and broaden domestic tax bases, forcing these governments to depend on alternative revenue streams to fund basic public services and infrastructure.
The lifeline of foreign grants
To bridge the gap left by limited domestic tax collection, many structurally constrained economies depend heavily on external financial assistance. In 2024, grants constituted the largest source of non-tax revenue for eight Asia-Pacific economies, including Tonga (79.2% of total NTR), Niue (71.0%), the Marshall Islands (68.5%), Samoa (67.2%), the Cook Islands (61.9%), and Tokelau (51.1%).
While these grants are an essential lifeline for sustaining domestic budgets, this reliance comes with significant risks. Aid flows to the Pacific are notoriously volatile, which complicates long-term fiscal planning and reduces the predictability needed to finance key public investment projects.
Natural resources and the blue economy
Beyond foreign aid, economies with abundant natural resources rely heavily on property income, rents, and royalties to generate non-tax revenue. For countries like Kazakhstan and Mongolia, these revenues are largely driven by the extraction of oil, coal, and copper.
For Pacific nations, however, the ocean is their greatest asset. The Vessel Day Scheme (VDS), administered by the Parties to the Nauru Agreement (PNA), has revolutionised non-tax revenue for its member states.
By allocating a fixed number of fishing days that can be sold or traded to foreign fleets, PNA members have successfully monetised their exclusive economic zones. This strategic scheme prevents overfishing while maximising economic returns, collectively generating around USD 500 million annually from tuna fisheries for member economies—roughly seven times what they collected in 2010. This innovation has been the primary driver of massive non-tax revenue growth in nations like Nauru and the Marshall Islands.
Ultimately, heavy reliance on non-tax revenue is not a policy failure but a necessary economic adaptation. While many Asia-Pacific economies are successfully implementing long-term tax base expansions—such as Mongolia’s progressive personal income tax or Kiribati’s value-added tax reforms—structural and geographic limitations ensure that foreign grants and the strategic monetisation of natural resources will remain the bedrock of fiscal survival for the region’s most constrained economies.
