Korea must scrutinize CPTPP membership beyond tariff gains amid shifting trade rules
Trade policy used to be judged by a familiar ledger: exports on one side, imports on the other. That arithmetic is becoming obsolete. As major economies reshape supply chains and trade barriers, commerce is being reorganized around competing blocs, strategic dependencies and negotiated rules.
Against that backdrop, South Korea is weighing entry into the Comprehensive and Progressive Agreement for Trans-Pacific Partnership.
The government's latest assessment, unveiled on Monday, offers a useful starting point. CPTPP membership is projected to lift real GDP by 0.38 percentage point cumulatively over 10 years, while manufacturing production could gain 6.3 trillion won to 6.7 trillion won ($4.6 billion to $5 billion) annually over 15 years.
Agriculture, forestry and fisheries, however, could see annual production fall by roughly 850 billion won.
Those figures should neither be dismissed as an unacceptable price nor treated as a national jackpot. They measure different kinds of effects, and the losses will be concentrated.
A decline spread across an entire economy is easier to absorb than one falling heavily on particular crops, fishing communities or rural regions already dealing with aging populations and high costs. For those affected, tariff reduction is hardly an abstract adjustment.
The strategic case for CPTPP extends beyond tariff arithmetic. The nation already has trade agreements with most of its 12 members, but accession would deepen access to Japan and create a new FTA framework with Mexico.
More importantly, common rules of origin can make it easier for companies to combine components and materials sourced across member economies. That matters when supply chains are being redesigned around reliability as much as efficiency.
CPTPP membership would also give the country a voice in a rulebook covering areas such as digital commerce, state-owned enterprises, labor and the environment.
As the World Trade Organization struggles to enforce a universal trading framework, plurilateral agreements are assuming greater practical importance. For Korea, helping shape such rules can have value even when immediate tariff gains are modest.
That does not make domestic adjustment a footnote. President Lee Jae Myung has suggested using part of the gains from expanded exports to compensate sectors hurt by liberalization. The government has also pledged to make up a previously promised 1 trillion won rural cooperation fund with state finances.
Such measures may help rebuild trust, but a compensation scheme should not become a substitute for structural reform.
Past experience gives farmers reason to demand more than assurances. A fund intended to mobilize 1 trillion won over a decade had raised only about 325.5 billion won by this year.
The government needs to present an enforceable funding plan and clear timetables. It also has to take a closer look at quarantine and sanitary rules, including concerns surrounding agricultural and fisheries imports.
The longer-term response should focus on helping vulnerable industries adjust rather than indefinitely preserving every existing production pattern.
Better logistics, agricultural technology, processing capacity and opportunities for older farmers to move into new livelihoods voluntarily can do more for rural sustainability than compensation alone.
The National Assembly should approach CPTPP accession with the same discipline: holding hearings that test the government’s assumptions, detailing impacts by product and region, and granting affected communities enough time to respond.
Joining the pact is a strategic choice with immediate domestic consequences, requiring the country to decide how much influence it will exercise in a changing trade order and how effectively it will protect those bearing the costs.
The fundamental question is no longer what the nation gains from opening its markets, but what position it secures in setting the rules that govern them.
khnews@heraldcorp.com