Tax Authority in Nauru: How the Revenue Office Works

Meet Nauru's Tax Authority: The Department of Finance and Revenue OfficeCopy link to section

The tax authority in Nauru is the Nauru Revenue Office (NRO), a body within the Department of Finance of the Republic of Nauru that administers the country's taxation and gaming legislation and acts as the cashiering function of government. For a foreign business owner or adviser, this single office is the point of contact for registration, filing, payment, and any compliance review tied to income earned from Nauru sources.

This article sets out how the office is structured, what it administers, how a foreign-owned entity registers and files, and what enforcement and exchange-of-information obligations mean for a non-resident. Official guidance and forms are published through the NRO homepage.

It will be most useful to non-resident investors with Nauru-source income, their tax advisers, and anyone weighing whether to establish or maintain an entity on the island.

Legal Foundations and the Mandate of the Revenue OfficeCopy link to section

The procedural backbone is the Revenue Administration Act (RAA), consolidated as of 20 January 2020, which sets the rules for administering all tax laws, including collection, recovery, and administrative penalties. Tax Identification Number registration also flows from this framework, which underpins the Employment and Services Tax and the Business Tax Act.

The office operates under the National Sustainable Development Strategy, with a stated aim of a stable macroeconomic environment and stronger public-service capacity. Amendments to the RAA later added provisions enabling tax information exchange with other countries.

Internally the NRO runs four divisions: Design and Management, Revenue, Taxpayer Services, and Compliance. Operational leadership sits with the Deputy Secretary, Nauru Revenue Office.

A notable feature for self-assessing taxpayers is the public ruling. Under section 47 of the RAA, the Secretary may publish an interpretation of a tax law to keep administration consistent; that ruling binds the Secretary until withdrawn, but it does not bind you as a taxpayer.

Company Incorporation in Nauru

Set up your company in Nauru with Expanship handling registration end to end.

Learn more

What the Authority Administers in NauruCopy link to section

The Revenue Office collects a narrow set of taxes, with several common levies absent altogether. The table below summarises what applies and what does not.

Beyond taxation, the office licenses gaming activity, covering bingo, betting, raffles, lotteries, table games, and gaming machines. It also issues cash export licences through a dedicated application form.

On the treaty front, the position is bare. Nauru has no double taxation agreements, though it has signed the OECD Multilateral Convention on Mutual Administrative Assistance in Tax Matters.

Registering as a Taxpayer with the Revenue OfficeCopy link to section

Registration is built around the Tax Identification Number, and the Revenue Office is the only body able to issue one. Employers and payers must register; resident individuals register only where a liability to tax arises, since tax-free thresholds apply under both the employment and business tax regimes.

For a non-resident, the trigger is activity, not ownership. You are taxed solely on income derived from Nauru sources, so registration obligations follow Nauru-source business or payments rather than the mere holding of shares.

Companies and self-employed persons resident or conducting business in the country must register with the office. Records must be kept for at least five years.

No published fee schedule, processing time, or online self-registration portal for TINs has been confirmed. In practice, registration is handled in person or by correspondence with the Taxpayer Services Division.

Ongoing Compliance in Nauru

Keep your Nauru entity compliant with filings, returns, and statutory obligations.

Learn more

Filing Channels, Forms and Available E-ServicesCopy link to section

Withholding sits at the centre of compliance. Employers deduct tax from employee pay and report it on monthly remittance forms, while business and non-resident filers use periodic returns.

The named return forms in use include:

• Business Tax Quarterly return, for SBT and NRT filers
• EST Withholding Tax Return
• Annual EST Withholding Tax Summary Return
• Application for Cash Export form

Guidance is published rather than left to interpretation. The office issues Taxation Determinations (TD 1 to 5 in the 2020 series), Public Rulings 1 to 3 covering depreciation, goods for own use, and record-keeping, and Q&A guides for both the employment and business taxes, including a guide to completing the foreign income schedule.

Two web resources matter. Guidance documents, rate schedules, and contact details are hosted on naurufinance.info, while consolidated legislation and amendments are kept on the official RONLAW database.

A fully operational electronic return-filing portal has not been confirmed in public sources. The office has signalled an intention to move administration onto digital platforms, but you should expect to file by the established forms and channels.

The Filing and Payment CalendarCopy link to section

Monthly remittance drives the routine. Withheld tax and the income tax of registered businesses and self-employed persons fall due on the 15th of each month.

Employment and services tax for a given month is paid by the 15th of the month after, so October liability is settled by 15 November. Companies liable to Business Profits Tax file an annual return, generally within 90 days after the fiscal year-end.

Nauru Incorporation Pricing

See transparent pricing to incorporate and maintain a company in Nauru.

View pricing

Assessment and How Liabilities Are DeterminedCopy link to section

The system relies on self-assessment, with returns filed by the taxpayer and adjusted assessments raised by the Secretary where warranted. Public rulings issued under section 47 exist to keep that process consistent.

Source and residency drive the outcome. A non-resident is assessed only on income derived from Nauru sources, while residency, determined under the employment and business tax Acts and turning on a 183-day threshold, governs access to tax-free thresholds that non-residents do not receive.

The office profiles taxpayers extensively to flag potential revenue risk and build a database for targeted review. No standardised tax residency certificate regime has been identified in government sources, and the RAA's statutory limitation period for assessments is not publicly specified.

Audit, Investigation and Information-Gathering PowersCopy link to section

Compliance work is split by taxpayer size. The Compliance Division runs small-business record-keeping audits to test bookkeeping and correct payment, and separate large-business audits to test full compliance with the tax laws.

Wider oversight runs through a Compliance Improvement Strategy that covers taxation, superannuation, and price control. Superannuation checks confirm that employers meet their obligations and that Nauruan employees accumulate benefits, and price control inspections, including fuel checks after a new Fuel Price Control Order is gazetted, guard against profiteering.

The five-year record-keeping rule supports these processes, since those records may be called for during an audit. Exact statutory provisions on document demands, entry to premises, or examination under oath are not published, though the RAA carries information-gathering powers of the kind common to Pacific island administrations.

Enforcement, Penalties and Dispute ResolutionCopy link to section

Failure to withhold, or withholding and then failing to pay over, is an offence under section 70 of the RAA. A conviction can carry a fine of up to AUD $5,000, imprisonment of up to two years, or both.

The office may choose administrative penalties instead of prosecution, including a late-payment penalty for tax not remitted by its due date. A payer who misses the deadline for employment tax incurs that penalty running from the due date.

Conduct expectations run both ways through the published Taxpayers Charter, which frames the relationship around mutual trust, transparency, and accountability. The precise late-payment percentage is not published, nor are the exact objection and appeal steps and their time limits, though the RAA provides a dispute resolution framework with objection and appeal provisions.

Contacting the Authority: Offices and Communication ChannelsCopy link to section

There is one office, as you would expect of a single-island nation, with no branches. It sits at the Civic Centre in Aiwo District, on the first floor directly above the Bendigo Bank Agency.

Walk-in enquiries are taken from 9:00 am to 4:30 pm, Monday to Friday, with no appointment needed. Telephone contact and guidance materials, including rate schedules and Q&A documents, are available through the naurufinance.info portal, and consolidated law is published on the RONLAW site at ronlaw.gov.nr.

What This Means for a Non-Resident OwnerCopy link to section

Exposure is strictly source-based. You are taxed only on income derived from Nauru, never on worldwide income, and ownership alone of a Nauru entity does not create a filing obligation.

Two charges deserve attention. Non-Resident Tax of 20% applies as a withholding on interest, royalties, or insurance premiums from Nauru sources, with the Nauru payer obliged to withhold and remit; a non-resident trading solely in Nauru with gross revenue up to AUD $250,000 falls under Small Business Tax at 2.5% of gross revenue, not net profit.

The absence of treaties is the sharpest planning point. With no double taxation agreements in force, there is no Nauru-specific treaty credit, so income taxed in Nauru may also be taxed in your home country without relief through a treaty mechanism.

Information exchange, by contrast, is active. Nauru participates in the Common Reporting Standard, so financial accounts held there by non-resident individuals and entities may be reported automatically to the account holder's jurisdiction of tax residence; the country also holds a June 2019 OECD Global Forum rating of "Largely Compliant" for exchange of information on request.

Several taxes that exist elsewhere simply do not apply: there is no capital gains, inheritance, or wealth tax, and no cryptocurrency tax legislation, which means crypto transactions generally fall outside direct taxation given the absence of capital gains tax. Foreign passport holders pay a departure tax of AUD $50 when leaving.

US persons should note one gap. No FATCA intergovernmental agreement between Nauru and the United States was confirmed, and Nauru does not appear on the IRS list of IGA partners, so US-owned entities and accounts remain subject to standard FATCA withholding rules absent a Model 1 or Model 2 agreement.

ConclusionCopy link to section

The Nauru Revenue Office is a single, source-based tax administration with a narrow tax base, no consumption tax, and no double taxation agreements. For a non-resident owner, that combination means limited Nauru tax on Nauru-source income but no treaty relief against home-country tax, alongside automatic information reporting under the Common Reporting Standard. Verify the fiscal year-end and your specific withholding obligations directly with the office before committing to filing dates, and keep records for the required five years.

How Expanship Can Help Your Business in NauruCopy link to section

Expanship supports foreign-owned entities with the practical side of dealing with the Revenue Office, from obtaining a Tax Identification Number to setting up correct withholding and meeting the monthly and annual return deadlines, and extends that support across the wider needs of running an entity on the island.

• Company formation and entity structuring in Nauru
• Registered agent and registered office services
• Tax registration with the Revenue Office and ongoing return filing
• Compliance management, including record-keeping and audit readiness
• Accounting and bookkeeping aligned to the five-year retention rule
• Introductions to banking and account-opening support

To discuss your situation and next steps, contact Expanship Nauru.

Frequently Asked QuestionsCopy link to section