Does Saint Lucia have a double-taxation agreement with the United States?

Saint Lucia does not have a full DTA with the United States. A 1958 relief order based on an older UK-US convention offers limited relief, and a 1987 US-Saint Lucia treaty was signed but never entered into force because Saint Lucia did not enact implementing legislation. The US-Saint Lucia TIEA, signed 2015, covers information exchange only, not rate reductions.

What withholding tax rate applies to royalties paid to a non-resident outside CARICOM?

Royalties paid to a non-resident who is not a resident of a CARICOM member state are subject to a 25 percent withholding tax under Saint Lucia's Income Tax Act. For a resident of a qualifying CARICOM member state, the CARICOM multilateral treaty caps the withholding rate at 15 percent of gross royalties under Article 13 of the 1994 agreement.

How does a Saint Lucia resident claim a foreign-tax credit on overseas income?

A resident files an annual income tax return with the Inland Revenue Department and attaches documentation of foreign tax paid. Where a DTA applies, the credit follows the treaty method. Without a treaty, the credit equals the lesser of: the foreign tax paid or the Saint Lucia tax on that same income. Practitioners recommend retaining foreign assessment notices and payment receipts as supporting evidence.

Which countries are parties to the CARICOM double-taxation agreement with Saint Lucia?

Ten CARICOM members have ratified the 1994 agreement alongside Saint Lucia: Antigua and Barbuda, Barbados, Belize, Dominica, Grenada, Guyana, Jamaica, Montserrat, Saint Kitts and Nevis, Saint Vincent and the Grenadines, and Trinidad and Tobago. The Bahamas, Haiti, and Suriname are CARICOM members but are not parties to this treaty.

Tax Treaty Relief in Saint Lucia — Rates, Rules & Filing

Q: Does holding Saint Lucia citizenship through the CBI program create a tax residency obligation?

No. Citizenship by investment in Saint Lucia does not automatically create tax residency. Individuals who hold Saint Lucian citizenship but do not reside in the country are not subject to Saint Lucia income tax on foreign-source income. Tax residency requires physical presence of at least 183 days in the fiscal year or the maintenance of a permanent home in Saint Lucia.

Saint Lucia (ISO country code: LC) maintains one of the smaller double-taxation agreement (DTA) networks in the Caribbean. The jurisdiction's primary treaty instrument is the CARICOM multilateral agreement signed in Barbados on 6 July 1994, which entered into force for Saint Lucia on 22 May 1995. Outside that multilateral framework, bilateral treaty coverage is narrow: two legacy relief orders (Switzerland and the United Kingdom, inherited from pre-independence arrangements) remain on the statute book, and the 1958 USA arrangement operates as a limited relief order rather than a full DTA. Practitioners and individuals with cross-border income exposures should review their specific situation with a qualified tax professional.

What does the CARICOM double-taxation agreement cover?

The Agreement Among the Governments of the Member States of the Caribbean Community for the Avoidance of Double Taxation and the Prevention of Fiscal Evasion (1994) is a UN-Model-influenced multilateral treaty now binding on ten ratifying jurisdictions: Antigua and Barbuda, Barbados, Belize, Dominica, Grenada, Guyana, Jamaica, Montserrat, Saint Lucia, Saint Kitts and Nevis, Saint Vincent and the Grenadines, and Trinidad and Tobago. The Bahamas, Haiti, and Suriname are CARICOM members but not party to this agreement.

The treaty's foundational rule is a source-state principle (Article 5): income of whatever nature is taxable only in the member state where it arises, with enumerated exceptions. This differs markedly from OECD-model treaties, which generally allocate residence-state rights for most passive income. Under the CARICOM framework, the rate caps for payments between member-state residents are as follows: ordinary dividends are exempt from withholding (0 percent); preference-share dividends, interest, royalties, and management fees are subject to a maximum withholding rate of 15 percent. Employment income is taxable in the state of employment unless the employee is present fewer than 183 days and remuneration is not borne by a non-resident employer. The competent authorities (for Saint Lucia: the Inland Revenue Department) may resolve disputes through mutual agreement under Article 23, and Article 24 provides for confidential exchange of information between authorities.

How does Saint Lucia tax residents, and what relief applies to foreign income?

Saint Lucia's Income Tax Act taxes individuals who are resident and ordinarily resident on their worldwide income. The fiscal year runs from 1 April to 31 March. Progressive rates apply to annual chargeable income in Eastern Caribbean dollars (XCD): zero percent up to XCD 18,000 (the basic personal allowance is XCD 18,400); 10 percent on XCD 18,001-29,000; 15 percent on XCD 29,001-33,000; 20 percent on XCD 33,001-43,000; 25 percent on XCD 43,001-53,000; and 30 percent on amounts above XCD 53,000. USD 1 equals approximately XCD 2.70 (the Eastern Caribbean dollar is pegged to the US dollar). Individuals who are resident but not ordinarily resident are taxed on Saint Lucia-source income plus foreign income only when remitted to the island. Non-residents pay tax only on Saint Lucia-source income.

Where a resident has paid foreign tax on income also subject to Saint Lucia tax, the Income Tax Act provides a statutory foreign-tax credit. If a DTA applies, the credit follows the treaty's prescribed method. Absent a treaty, the credit is capped at the lower of: (a) the foreign tax actually paid, or (b) the Saint Lucia tax on that same income. This unilateral credit mechanism means residents can claim partial double-taxation relief even when no treaty exists with the source country. Substantiating documentation -- foreign tax assessments, payment receipts, and (where applicable) a certificate of residence -- is presented to the Inland Revenue Department during the annual return filing.

What withholding tax rates face non-residents, and do treaties reduce them?

The table below summarises the withholding tax rates that apply to payments made to non-resident recipients from Saint Lucia-source income, and the reduced rates available under the CARICOM treaty for qualifying CARICOM-member residents (source: PwC Worldwide Tax Summaries, reviewed January 2026).

Payment type	Non-CARICOM rate	CARICOM-member rate	Notes
Ordinary dividends	0%	0%	Dividends are generally exempt from Saint Lucia tax in both cases
Preference-share dividends	25%	15%	Reduced under CARICOM Art. 12 cap
Interest	15%	15%	Standard non-resident rate already at treaty cap
Royalties	25%	15%	Reduced under CARICOM Art. 13 cap
Management fees	25%	15%	Reduced under CARICOM Art. 14 cap
Other non-resident income	25%	25%	No treaty reduction on general income
Contractor payments (resident)	10%	n/a	Applies to payments to resident contractors

To claim the CARICOM reduced rates, the non-resident payee must demonstrate membership in a ratifying state. In practice, the payer withholds at the applicable rate and the non-resident payee may apply to their home jurisdiction's competent authority for relief consistent with the source-state principle.

How is a certificate of residence obtained and used?

A certificate of residence is the standard instrument used to confirm an individual's or entity's tax domicile for treaty purposes. In Saint Lucia, the Inland Revenue Department (IRD) issues certificates of residence to qualifying applicants. An individual is treated as resident in Saint Lucia for tax purposes if they are present in the country for at least 183 days in the relevant fiscal year or maintain a permanent home there. Ordinary residence requires a more settled pattern of habitation.

The certificate is used in two directions: (a) a Saint Lucia resident receiving income from another CARICOM state presents the certificate to that state's tax authority to invoke CARICOM treaty protections and obtain withholding at treaty rates; (b) a non-resident payer in Saint Lucia may require the foreign payee to produce an equivalent certificate from their home jurisdiction before applying the reduced CARICOM rate rather than the 25 percent headline rate. Requests for the certificate are directed to the IRD's main office in Castries (telephone 1-758-468-4700; email: [email protected]). The IRD does not publish a standard application form on its public documents portal as of June 2026; applicants should contact the department directly for current requirements.

What role do TIEAs, CRS, and the CBI program play?

Saint Lucia has 16 Tax Information Exchange Agreements (TIEAs) in force covering: Aruba, Australia, Belgium, Denmark, Finland, France, Germany, Iceland, Ireland, the Netherlands, Netherlands Antilles, Norway, Portugal, Sweden, the United Kingdom, and the United States. These TIEAs are not DTAs -- they do not reduce withholding tax rates or provide tax relief -- but they obligate both sides to exchange information on request for civil and criminal tax investigations.

In November 2016, Saint Lucia signed the OECD Multilateral Convention on Mutual Administrative Assistance in Tax Matters, extending its automatic exchange framework. The jurisdiction signed the Common Reporting Standard (CRS) Multilateral Competent Authority Agreement in October 2015, with automatic exchange of financial account information commencing in September 2018. Saint Lucia also signed a FATCA Model 1 Intergovernmental Agreement with the United States on 19 November 2015, requiring Saint Lucia financial institutions to report US-accountholder information to the IRD for onward transmission to the IRS. As of June 2026, Saint Lucia has not signed the OECD Multilateral Instrument (MLI) to implement BEPS treaty-abuse measures.

Saint Lucia's Citizenship by Investment (CBI) program grants citizenship but does not automatically confer tax residency. Individuals holding Saint Lucian citizenship who do not reside in the country are not subject to Saint Lucia income tax on foreign-source income unless they earn income arising in Saint Lucia. Tax residency requires at least 183 days of physical presence in the fiscal year or the maintenance of a permanent home. CBI applicants who intend to use Saint Lucia tax residency as part of a broader cross-border structure should note that CRS and FATCA reporting mean financial institutions in signatory countries will share account data with relevant tax authorities.

Individuals and entities with cross-border income touching Saint Lucia are encouraged to review their position with a qualified tax professional listed on this platform. The treaty framework described here reflects law as reviewed in January 2026 and verified in June 2026; legislative changes can affect rates and procedures. For jurisdiction context and practitioner listings for Saint Lucia, see the Saint Lucia country overview.

Tax Treaty Relief in Saint Lucia

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