Vietnam’s public-private partnership pipeline is the largest it has ever been, and it is largely untapped by private sector capital from Taiwan. The government has allocated VND 995 trillion in public investment for 2026, with PPP structures at the core of its transport, energy, and infrastructure development programme. For Taiwanese infrastructure investors and private enterprises with decades of BOT experience from Taiwan’s own privatisation era, the regulatory window has never been more favourable. The 2024 amendments to Vietnam’s PPP Law introduced revenue risk-sharing, streamlined approvals, and reintroduced the Build-Transfer model, changes that directly address the bankability concerns that kept foreign investment on the sidelines for years.
This guide explains the legal framework, the bid process, and the key issues Taiwanese firms need to resolve before submitting an Expression of Interest.
Vietnam PPP Investment: Why 2026 Is the Entry Window
Three forces converged in 2025 and 2026 to make Vietnam PPP investment more attractive than at any prior point.
First, regulatory reform: Law 57/2024/QH15, which amended the PPP Law 2020, came into full effect in 2025 and introduced the most investor-friendly changes since the original law, including a government revenue guarantee for the first three years of operations and a system of faster approval timelines. Second, project volume: Vietnam’s Ministry of Transport has launched bidding processes for multiple expressway BOT packages in 2026, with the North–South high-speed railway contractor selection targeted for Q2 2026. Third, financing conditions: Vietnam’s recognition by FTSE Russell as an emerging market brings new institutional capital into the country’s public markets, improving the liquidity environment for every private investor and project co-financier.
Firms that need to expand into new markets and are evaluating Vietnam foreign investment in infrastructure will find the 2026 window more favourable than any prior entry point, and the next budget cycle will price it more expensively.
Vietnam’s Public-Private Partnership Legal Framework: Law 64 and the 2024 Amendments
Vietnam’s PPP investment regime is governed by Law No. 64/2020/QH14 (the PPP Law), which was the first standalone legislation to consolidate and codify decades of fragmented BOT decree practice. Its implementing regulations are Decree 35/2021/ND-CP, amended most recently by Decree 71/2025/ND-CP (effective March 2025).
The PPP Law sets the minimum investment threshold at VND 100 billion (approximately USD 4 million) and designates transport, energy generation and transmission, irrigation, clean water, health, education, and information technology infrastructure as eligible sectors. The competent authority, typically the Ministry of Planning and Investment (MPI) for national projects or the provincial People’s Committee for sub-national projects, acts as the procuring agency responsible for feasibility appraisal, investor selection, and contract execution. The allocation of responsibilities between the competent authority and the project company is set out in the PPP contract and implementing decrees. Foreign investors, whether as lead private investor, consortium member, or equity co-investor, participate through the project company (Special Purpose Vehicle) established post-award.
What Changed Under the 2024 Amendments (Law 57/2024)
Law No. 57/2024/QH15 introduced five changes material to foreign investors and private partnership projects. The revenue risk-sharing guarantee (the most bankability-significant change) provides a government backstop if actual revenue falls below 75% of the feasibility study forecast in the first three years of operations, directly reducing the traffic and offtake risk that has historically made Vietnam PPP debt financing expensive. The BT model was reintroduced with strengthened valuation controls after being suspended under the 2020 law due to abuses. Approval timelines were cut to approximately 12 months by removing the need for pre-feasibility study requirements for Group B, C, and O&M projects. State capital participation was raised to 70% for technology and digital infrastructure projects. And local People’s Committees gained authority over smaller provincial PPP projects, reducing the central MPI bottleneck for sub-national infrastructure development.
PPP Project Contract Types: BOT, BTO, BT, BTL and O&M Compared
Vietnam recognises five primary PPP contract structures under the current law:
Build-Operate-Transfer (BOT) is the most common structure for transport and energy projects. Under this model, the private sector investor finances, builds, and operates the asset for a defined concession period, typically 20–30 years, recovering costs through user charges or availability payments, then transfers ownership to the state. This is the structure most familiar to Taiwanese firms from Taiwan’s own expressway and power privatisation programmes.
Build-Transfer-Operate (BTO) transfers ownership to the state upon construction completion, with the investor retaining operating rights for the concession period. Preferred for projects where state ownership of the asset is politically required during operation.
Build-Transfer (BT) was reintroduced under the 2024 amendments. The investor constructs and transfers, receiving compensation in the form of land, development rights, or state budget payment. Suits investors who prefer a defined exit rather than long-term operational exposure.
Build-Lease-Transfer (BTL) and O&M contracts apply primarily to social infrastructure (hospitals, schools, water treatment, water supply systems) where the state makes availability payments over the contract period. These models provide more predictable cash flows and suit private enterprises seeking lower revenue risk at the expense of lower return.
The Revenue Risk-Sharing Guarantee in Practice
The guarantee is capped at the government’s capital contribution percentage of the revenue shortfall. For a project where the state contributes 30% of total investment, the government’s maximum liability is 30% of the shortfall below the 75% trigger. The allocation of revenue risk between the state and the private investor through this mechanism is one of the most significant improvements in the 2024 system, it reduces the effective traffic risk premium in project finance debt pricing and improves the risk-adjusted IRR on greenfield toll road and energy projects where year-one ramp-up has historically been the primary bankability issue.
The Bid Preparation Workflow: EOI to Financial Close
Vietnam PPP bidding follows a two-stage process governed by Circular 08/2022/TT-BKHDT (bidding procedures) and Circular 10/2022/TT-BKHDT (investor selection). All submissions are made via DauThau.vn, Vietnam’s National Procurement Portal, which requires prior entity registration before any EOI can be filed.
Step 1, Register on DauThau.vn
Foreign investors must register a legal entity on the DauThau.vn platform before the EOI deadline. The portal operates in Vietnamese with an English interface layer; Taiwanese firms should engage a local procurement agent or legal advisor to complete registration and ensure document formats comply with the platform’s technical specifications. Registration typically takes 5–10 working days.
Step 2, Submit Expression of Interest and Investor Selection Dossier
The EOI dossier, reviewed by the competent authority for the investor selection procedure, requires corporate registration documents, audited financial statements for the last three years (demonstrating net worth and liquidity meeting the specific project thresholds), a portfolio of comparable projects completed in the last 10 years, and letters of intent from proposed consortium members. Prequalification shortlists are typically limited to 5–7 bidders.
Step 3, Prepare and Submit the RFP Response
Shortlisted bidders receive the Request for Proposal including the draft PPP contract, financial model assumptions, and technical specifications. The response requires a technical proposal, financial model, and proposed concession terms. Performance security of 1–3% of total investment must be lodged; bid validity is 180 days (extendable to 210). International bids must include a qualified Vietnamese domestic sub-contractor, sole foreign bids are not eligible.
Step 4, Preferred Bidder to Financial Close
The preferred bidder achieves financial close, arranging debt, equity, and insurance, and incorporates the project SPV under Vietnamese law. Decree 210/2026/ND-CP (effective July 2026) governs the construction contract between the SPV and the EPC contractor under FIDIC-aligned conditions that Taiwanese EPC firms will recognise from international markets.
Why Taiwanese Investors Have a Structural Edge in Vietnam PPP Partnership Bids
Taiwan Vietnam infrastructure investment flows reflect a deep bilateral relationship built on decades of private partnership and public-private cooperation. Taiwan is consistently among Vietnam’s top five FDI source countries, with an established manufacturing footprint in Bắc Giang, Hải Phòng, and Đồng Nai that spans electronics, textiles, and infrastructure development. That footprint gives Taiwanese firms three advantages in Vietnam PPP partnership bids that they need to leverage actively. First, in-country supply chain networks reduce EPC procurement costs and mobilisation timelines, both evaluated in bid scoring. Second, BOT project experience from Taiwan’s 1990s privatisation era, expressways, power plants, water treatment, maps directly onto Vietnam PPP prequalification experience criteria. Third, the bilateral tax arrangement reduces withholding tax exposure on SPV dividend repatriation, a material advantage on 20–30 year concession returns.
Key Risks and Risk Allocation Issues for Private Sector Investors
Vietnam PPP investment carries risks that must be built into the financial model. Risk allocation under the PPP Law favours the competent authority on several dimensions that private sector investors must price carefully. Governing law: Vietnamese law governs all PPP contracts with no foreign law election permitted, limiting dispute resolution options for international lenders. Termination: The PPP Law retains broad state rights to terminate “in the national interest”; compensation mechanisms exist but remain largely untested in disputed cases, a key issue for lenders assessing step-in rights. Local content: The 30% Vietnamese input requirement affects EPC cost modelling for Taiwanese enterprises importing significant plant or specialised equipment. Timeline slippage: Government procurement routinely extends beyond published schedules; conservative mobilisation assumptions are essential in any business case. Foreign investment controls: Certain PPP sectors retain restrictions on foreign equity allocation that require legal review before bid submission.
How Viettonkin’s Advisory Service Can Help Taiwanese PPP Investors
Viettonkin Consulting advises Taiwanese infrastructure investors and private enterprises on Vietnam PPP investment from opportunity identification through to financial close. Our service covers bid strategy, prequalification dossier preparation, consortium structuring, risk allocation review, revenue model analysis against the 2024 amendment guarantee mechanism, and DauThau.vn filing support. We work with your legal, finance, and business development teams to ensure your business case is sound and your investment enters the Vietnamese public investment public-private partnership system on the strongest possible footing. Contact us to discuss your specific business needs.
Frequently Asked Questions
What is Vietnam’s PPP law and how does it work for foreign investors? Vietnam’s PPP investment framework is governed by Law 64/2020/QH14, as amended by Law 57/2024/QH15. Foreign investors may participate as lead investor or consortium member in BOT, BTO, BT, BTL, or O&M projects. Minimum project size is VND 100 billion. All bids are submitted via DauThau.vn, and international bids must include a Vietnamese domestic sub-contractor.
What changed in Vietnam’s PPP law in 2024? Law 57/2024 introduced a 3-year revenue risk-sharing guarantee (triggering if revenue falls below 75% of forecast), reintroduced the BT contract model, streamlined Group B/C project approvals to approximately 12 months, raised state capital participation to 70% for tech/digital projects, and decentralised approval authority to provincial level for smaller projects.
How do foreign investors bid for PPP projects in Vietnam? The process is: (1) register on DauThau.vn, (2) submit an EOI with financial and technical prequalification evidence, (3) if shortlisted, respond to the RFP with a technical proposal, financial model, and performance security of 1–3% of investment, (4) achieve financial close and incorporate the project SPV after preferred bidder selection.
What PPP contract types are available in Vietnam? BOT (Build-Operate-Transfer), BTO (Build-Transfer-Operate), BT (Build-Transfer, reintroduced 2024), BTL (Build-Lease-Transfer), and O&M contracts. BOT is the most common structure for transport and energy projects and the most familiar to Taiwanese firms from Taiwan’s own privatisation history.
Can Taiwanese companies bid for Vietnam PPP projects without a local partner? No, international bids must include a qualified Vietnamese domestic sub-contractor, either as a consortium member or through a sub-contracting arrangement. The local partner requirement applies to the construction phase; the project SPV (project company) may be 100% foreign-owned depending on the sector and project structure.
Viettonkin Consulting is a Vietnam-focused investment and legal advisory firm. This article is for informational purposes only and does not constitute legal advice. Consult qualified legal counsel before acting on any of the information contained herein.
