Vietnam Tax Changes in 2026: A Compliance Wake-Up Call for Foreign Firms

With major tax rule changes set to take effect in 2026, foreign-invested enterprises in Vietnam are facing an urgent need to reassess their legacy compliance processes and bolster the evidence linking their contracts, payments, accounting records, and tax filings. These adjustments are crucial as Vietnam's tax framework has undergone substantial changes in 2025 and 2026, making periodic reviews more important than relying on compliance processes established at the entity's inception. Common tax and compliance mistakes by foreign-invested companies often stem from unsupported related-party transactions, incorrect application of corporate income tax (CIT) incentives, expatriate personal income tax (PIT) errors, overlooked foreign contractor tax (FCT), incomplete value-added tax (VAT) refund records, foreign loan registration failures, and poor preparation for tax audits. These oversights can lead to tax reassessments, late-payment interest, administrative penalties, delayed refunds, and difficulties in remitting funds abroad. For instance, intercompany service fees may lack sufficient evidence of the work performed, leading to tax adjustments and interest. Similarly, applying investment incentives to expansions without verifying eligibility can result in the clawback of these benefits. The Vietnamese government's commitment to fostering economic growth, particularly through foreign direct investment (FDI), is evident, but this is increasingly paired with a stronger emphasis on tax compliance and the prevention of tax evasion. New regulations, such as Decree 255/2026/ND-CP effective from July 1, 2026, introduce a new framework for transfer pricing, requiring companies to pay close attention to disclosure and documentation obligations for related-party transactions. Furthermore, the new PIT Law 109/2025/QH15, Decree 253/2026/ND-CP, and Circular 87/2026/TT-BTC, also effective from July 1, 2026, bring new provisions concerning expatriate payroll. Companies must ensure their policies align with this updated framework, rather than assuming older guidance still applies. The Vietnamese government actively seeks to attract FDI, especially in manufacturing and high-tech sectors, but is also strengthening its stance on tax compliance. Companies operating in Vietnam must adapt swiftly to the evolving tax landscape to navigate potential risks and ensure smooth operations. This proactive approach is vital for Vietnam as it aims to enhance its global economic standing while pursuing sustainable growth.