The World Trade Organization says a stronger multilateral trading system could lift global gross domestic product by 2.9% by 2050, equal to about $3 trillion in 2023 prices. Its new report also puts the gap between deeper cooperation and a more fragmented system at roughly 5% to 10% of global real GDP.
The figures come from the WTO’s World Trade Report 2026, released on September 15. They are scenario estimates, not forecasts. They show how the world economy might differ by 2050 under alternative sets of trade rules and policy choices.
The report arrives as governments put more emphasis on industrial policy, supply-chain security and trade restrictions, while companies continue to depend on cross-border markets for components, services and customers. The WTO’s central argument is that an old framework needs updating, but that replacing common rules with competing blocs or a patchwork of bilateral deals would carry an economic cost.
Three paths for global trade
In the WTO’s strengthened multilateral scenario, members make broader market-opening commitments, add disciplines for digital trade and services, widen participation and balance openness with security concerns. Relative to the report’s baseline path, global exports are 17.9% higher by 2050 and world GDP is 2.9% higher.
The other scenarios model weaker cooperation. In a geo-fragmented world, trade is organized around geopolitical blocs. The report estimates global GDP would be 5.1% lower than the strengthened-cooperation scenario and exports 18.6% lower. In a world where a network of free-trade agreements replaces the multilateral system, it estimates a 6.9% GDP shortfall and a 26.9% export shortfall.
Those comparisons should not be read as a precise bill for any one tariff or agreement. Long-range models rely on assumptions about policy, investment, productivity and how firms react. Their strength is in showing the direction and scale of trade-offs across consistent scenarios, not in predicting the exact size of the world economy a quarter-century from now.
Trade is still growing, even as rules come under pressure
The report’s warning sits beside evidence that goods trade has remained more resilient than many businesses expected. The WTO’s Goods Trade Barometer, published last week, stood at 102.0 in its latest reading. A value above 100 indicates merchandise trade is running above its recent trend. The organization said demand for electronic components connected with AI investment was helping offset pressure from conflict, higher energy costs and policy uncertainty.
Recent data also show that trade growth is uneven. Our coverage of second-quarter G20 trade found merchandise imports across the group rose 6.7% in current US dollars, ahead of the 5.9% increase in exports. Growing trade volumes do not automatically mean that national trade balances, access to markets or gains between countries are evenly distributed.
The WTO estimates that least-developed countries could see GDP rise 7.7% under its strengthened multilateral scenario. These economies account for less than 1% of world trade today, according to the report, and could benefit disproportionately from lower tariffs and other trade costs. The estimate still depends on domestic capacity, including ports, customs administration, transport, finance and firms able to supply foreign buyers.
Rules matter beyond tariffs
Modern trade policy reaches far beyond border duties. Data flows, services regulation, standards, subsidies and rules of origin can all affect whether a manufacturer can source inputs, a software business can serve a foreign client or a smaller exporter can enter a supply chain.
That is why new trade agreements alone may not deliver their promised gains. In Africa, for example, the World Bank has argued that domestic reforms to logistics, border procedures and services restrictions are needed alongside continental agreements. We recently examined that analysis, including the constraints that remain after market access is formally granted.
The WTO report identifies four forces straining the existing system: shifts in economic power, more government intervention and concerns about fair competition, changes from digitalization and global value chains, and geopolitical tensions. None of those pressures disappears if countries stop negotiating together. They instead move into smaller agreements, national rules and bilateral disputes, where larger economies often have more bargaining power.
The report does not set out a single reform package, and its modeled outcomes should not be treated as a commitment by WTO members. Its message is narrower: common rules need to adapt to a more multipolar economy, but businesses and countries have more to lose when the rules that govern cross-border commerce are allowed to erode.
