Fitch Ratings said that Vietnam could see a significant boost to long-term economic growth, investment and exports.
"Of the 12 countries that are party to the TPP, models suggest that Vietnam would see the biggest benefits in terms of economic impact," Fitch said in a statement released on October 12 on its website.
Vietnam could see a positive economic growth effect in excess of 10 percent over the 10 years to 2025 under the TPP agreement, according to the estimates of one study by researchers Petri, Plummer and Zhai.
Fitch believes that the agreement would have significant impact on two key areas in Vietnam – trade and domestic economic policy.
"The free trade elements of the TPP will lower tariff barriers, giving Vietnam greater access to large consumer markets in the United States (US), Japan, Canada and Australia."
TPP signatories accounted for 39 percent of Vietnam's total exports and 23 percent of imports in 2014. The potential positive effect on trade could be transformative, with the aforementioned study estimating the TPP will boost Vietnam's exports by over 37 percent over 10 years.
Notably, Vietnam in August also concluded the terms of a free trade deal with the European Union (EU), putting it on course to complete free trade agreements with three of its four largest export destinations – the EU, Japan and the US.
According to Fitch, the agreement does much more than just lower tariff barriers – it also aims to address wide-ranging barriers to trade by setting rules governing intellectual property rights, business competition policies including those related to State-owned enterprises, public procurement policies, supra-national dispute resolution, and labour standards.
"As such, the TPP has the potential to act as a key policy anchor for structural reforms and economic liberalisation that could bolster productivity and foreign investment for Vietnam," Fitch said.
Meanwhile, Moody's says that the TPP deal will reduce the cost of trade and open up new investment opportunities, supporting growth especially for participating Asian sovereigns including Vietnam.
While full details of the agreement have yet to be published, greater access to the US for their goods should help to make Asian countries the biggest beneficiaries in GDP-relative terms, it said.
"Vietnam's apparel and shoe manufacturers will profit from lower import duties with the US and Japan," said Moody's.
The rating agency said that another positive aspect of the trade negotiations has been to act as a catalyst for reforms in several countries in the region, such as Japan and Vietnam.
One modestly credit-negative aspect to the trade deal is that it could hurt governments' fiscal balances by reducing their customs revenues over the longer term. But additional receipts from an expected uptick in economic growth due to the agreement are likely to offset foregone tariff revenues, it said.