Gabon Cross-Border Tax Guide 2026

Overview — Cross-Border Taxation in Gabon

Gabon's cross-border tax rules are governed by the General Tax Code, CEMAC directives, and applicable double tax treaties. The Direction Générale des Impôts (DGI) has been strengthening its international tax capacity, including participation in the OECD's Base Erosion and Profit Shifting (BEPS) Inclusive Framework. Multinational enterprises operating in Gabon must comply with transfer pricing documentation requirements, thin capitalisation rules, and withholding tax obligations. Non-residents earning Gabon-source income are generally subject to withholding taxes at statutory rates, which may be reduced under applicable treaties. The CEMAC Commission has issued directives harmonising transfer pricing rules and tax procedures across the six CEMAC member states.

Transfer Pricing — CEMAC/OECD Guidelines

Gabon's transfer pricing rules follow the CEMAC Common Code on Transfer Pricing, which is aligned with OECD guidelines. The regulations require that transactions between related parties be priced at arm's length. Related parties include companies under common control, parent-subsidiary relationships, and individuals with significant influence (direct or indirect ownership of 25% or more). Documentation requirements include a master file and local file for groups meeting thresholds (consolidated revenue exceeding XAF 10 billion or intra-group transactions exceeding XAF 500 million). Acceptable transfer pricing methods include the Comparable Uncontrolled Price (CUP) method, Cost Plus method, Resale Price method, Transactional Net Margin Method (TNMM), and Profit Split method. Advance Pricing Agreements (APAs) are available and processed through the CEMAC Commission. Penalties for non-compliance range from 10% to 40% of the tax adjustment plus interest.

Thin Capitalisation — 1.5:1 Debt-to-Equity

Gabon's thin capitalisation rules limit the amount of interest that a company can deduct on related-party debt. The maximum allowable debt-to-equity ratio is 1.5:1 (debt exceeding equity by no more than 1.5 times). Interest on debt exceeding this ratio is disallowed as a deduction and may be reclassified as a dividend for withholding tax purposes. The rules apply to all related-party debt, including loans from foreign parent companies, sister companies, and guaranteed third-party debt. Certain long-term financing from approved financial institutions and public infrastructure projects may be exempt. The DGI may also apply general anti-avoidance rules where debt arrangements lack commercial substance. The 1.5:1 ratio is more restrictive than in many other jurisdictions (e.g., 3:1 in Ghana, 4:1 in some OECD countries).

Withholding Taxes to Non-Residents

Payments to non-residents from Gabon-source income are subject to withholding tax at the following standard rates (treaty rates may apply):

• Dividends — 15% (reduced to 5% under France and Belgium DTTs for ≥10% shareholding)
• Interest — 15% (reduced to 10% under France and Belgium DTTs)
• Royalties — 15% (reduced to 5% under France DTT, 10% under Belgium DTT)
• Management & technical fees — 20%
• Branch profits remittance — 15%
• Rental income (non-resident landlord) — 15% withholding as final tax

The person making the payment must withhold the tax and remit it to DGI within 15 days of payment. A withholding tax certificate must be issued to the non-resident. Treaty relief requires the non-resident to provide a Certificate of Tax Residency and submit a treaty relief application to DGI.

Controlled Foreign Company (CFC) Rules

Gabon's CFC rules (under CEMAC directive) attribute certain passive income of a foreign company to its Gabonese resident shareholders where the foreign company is controlled by Gabon residents. A foreign company is a CFC if Gabon residents hold more than 50% of the shares, voting rights, or entitlements to profits. The attributed income includes dividends, interest, royalties, rent, and capital gains of the CFC — but only if the foreign jurisdiction has a preferential tax regime (effective tax rate less than half of Gabon's standard CIT rate of 30%). Active business income of the CFC (trading, manufacturing) is not attributed. The Gabonese shareholder reports their proportionate share of the CFC's passive income in their annual tax return. The rules are designed to prevent Gabonese residents from deferring tax by earning passive income through foreign entities in low-tax jurisdictions.

CEMAC Regional Integration

Gabon benefits from the CEMAC regional integration framework for cross-border taxation within the region:

• No withholding tax on dividends, interest, or royalties paid to residents of other CEMAC countries (under the CEMAC non-discrimination principle)
• Common external tariff (CET) for imports from outside CEMAC
• Harmonised corporate tax base and VAT rules across CEMAC
• Coordination of tax audits for companies operating in multiple CEMAC states
• Regional dispute resolution mechanism through the CEMAC Commission
• BVMAC regional stock exchange for capital raising within CEMAC

This regional integration makes Gabon attractive as a hub for CEMAC-wide operations. A company established in Gabon can trade freely with other CEMAC countries without customs duties or withholding tax barriers, creating a market of over 50 million consumers.

FAQs

Do I need to register for tax in Gabon as a non-resident investor?

Non-residents earning Gabon-source income (e.g., dividends, interest, rent) generally do not need to register for tax if the income is subject to final withholding tax. However, a non-resident with a permanent establishment in Gabon must register and file corporate tax returns.

How do I claim a refund of excess WHT?

A non-resident may claim a refund if WHT was deducted at the full statutory rate when a reduced treaty rate should have applied. The refund claim is submitted to DGI with supporting documents including the treaty relief application and proof of residency. The process typically takes 2–4 months.

Does Gabon have a General Anti-Avoidance Rule (GAAR)?

Yes, the General Tax Code includes a GAAR that allows DGI to recharacterise transactions entered into for tax avoidance purposes. The GAAR applies to cross-border and domestic arrangements and is enforced through the abuse of law (abus de droit) doctrine derived from French tax law.

Disclaimer

This guide provides general information about Gabonese cross-border taxation for the 2026 tax year. Tax laws and treaty provisions may change. Always consult with a qualified Gabonese international tax advisor or the Direction Générale des Impôts for advice specific to your situation. InvestmentKit does not provide tax advice.