What: Southeast Asia split into two speeds in Q2 2026, with tech- and trade-led economies such as Vietnam, Malaysia and Singapore accelerating while Thailand and the Philippines lost momentum amid a Middle East-driven energy shock.

Why it is important: Vietnam and Singapore's continued strength — despite regional headwinds — reinforces their standing as priority growth markets for retail investment and expansion.

Southeast Asia's six major economies diverged sharply in the second quarter of 2026. Vietnam led with 8.39% GDP growth, followed by Malaysia at 6.0%, Singapore at 5.9% and Indonesia at 5.29%, while Thailand slowed to 1.9% and the Philippines to 2.3%. Exports were the standout driver across all six markets, powered by global demand for electronics and technology-related goods, with industrial activity strengthening in Malaysia, Singapore, Vietnam and the Philippines.

The Middle East energy shock complicated the picture, pushing inflation higher in five of the six economies and pressuring the Indonesian rupiah, Philippine peso and Thai baht. Policy responses diverged accordingly: Indonesia and the Philippines raised interest rates, Singapore tightened its exchange-rate policy, while Malaysia, Thailand and Vietnam held their settings steady.

Looking ahead, technology-led exports and improving manufacturing indicators provide a strong platform for the second half, but how effectively individual economies translate that momentum into broader domestic growth will depend on how inflation and currency pressures evolve.

IADS Notes: The World Bank's downgraded 2026 growth outlook for Southeast Asia had already begun weighing on major retail conglomerates by early spring, with stagnant sales and softer tourist arrivals pressuring groups such as Central Retail, Makro-Lotus and Big C (The Diplomat, April 2026). Against this backdrop, the region's AI adoption has produced uneven results: early movers have captured measurable efficiency and service-quality gains, but regulatory fragmentation and workforce readiness continue to limit how many retailers can scale AI beyond pilot projects (The Diplomat, April 2026). Performance has nonetheless diverged sharply by market. Singapore's retail sector kept accelerating even as petrol and living costs climbed, reinforcing its position as a regional benchmark for resilience (Inside Retail, June 2026), while Vietnam's retail sales moved into double digits on the back of a tourism boom and strong GDP growth, prompting Central Retail to commit to 30 new stores in the market (Inside Retail, April 2026).

Southeast Asia quarterly economic review: Tech tailwinds drive a two-speed region