Korean banks' first ₩6T quarter: KB Indonesia turns profitable, Vietnam licences thaw, Woori stalls

In late April 2026, Korea's five financial groups reported their first-quarter results. The combined net profit came in at ₩6.2 trillion — the first quarter on record above ₩6 trillion. KB Financial led with ₩1.89 trillion (up 11.5%), Shinhan Financial booked ₩1.62 trillion (up 9.0%), Hana Financial reported ₩1.21 trillion (up 7.3%), and Woori Financial — dragged by roughly ₩130 billion of provisions on its Indonesian Woori Saudara unit — slid to ₩604 billion. Shinhan's overseas net profit reached ₩221.9 billion in the quarter, up 4.9% year-on-year and 27.5% quarter-on-quarter, extending the trajectory that took 2025 group overseas profit past ₩1 trillion (roughly $700 million) for the first time for any Korean financial firm.

Those are not figures anyone would have forecast when Shinhan entered Vietnam in 1993 as the first Korean bank in the country, or when KB acquired a controlling stake in Indonesia's Bukopin in 2020 at a price the domestic press called an overreach. Three years later, the verdict has resolved into two execution tracks. KB and Shinhan gained. Hana and Woori fell back, dragged by loss-making China and Indonesian units. The Southeast Asia playbook that looked monolithic in 2023 has, three years later, resolved into something Korea's domestic regulator now openly differentiates between.

Why the push remains structural, not opportunistic

The Korean domestic banking market has been margin-constrained since the Financial Services Commission's 2019 household-debt tightening. Q1 2026 net interest margins for the four majors landed at KB 1.99%, Shinhan 1.93%, Hana 1.82%, and Woori 1.51% — up two to eight basis points sequentially as the FSC raised the mortgage risk-weight ceiling from 15% to 20%, which the central bank's loan officer survey already shows tightening Q2 household credit appetite. In that environment, expansion into markets with 4–5% NIMs and under-banked SME layers is not adventurous — it is mandatory for earnings growth.

KB Bank Indonesia: six years to profitability

KB Financial Group's Indonesian subsidiary — rebranded from KB Bukopin to PT Bank KB Indonesia — was the hardest test of the Korean platform-acquisition playbook. KB acquired a controlling stake in 2020, inherited a deeply under-provisioned legacy loan book, and spent three years writing down assets the domestic press pilloried as an overreach. In 2025 the unit narrowed its loss to ₩68.3 billion from ₩240.9 billion in 2024 — a more than 70% reduction. In Q1 2026, the unit posted net profit of Rp10.7 billion (roughly ₩900 million) with pre-provision operating profit turning positive for the first time since the KB acquisition. Net interest income jumped 97% year-on-year to Rp363 billion, and net interest margin expanded from 1.09% to 2.09%. It is the unit's first profitable quarter in six years, and validates a buy-and-fix thesis that looked underwater as recently as twelve months ago.

Vietnam's licensing thaw

The State Bank of Vietnam (SBV) had not approved a new foreign-bank presence since September 2017. That changed in May 2026. KDB received an in-principle licence (Letter of Approval) for a Hanoi branch on 7 May, while IBK received its in-principle licence for a Vietnamese subsidiary on 30 May — the first Korean policy-bank presence in eight years and only the third Korean banking subsidiary in Vietnam after Shinhan and Woori. The thaw matters because the SBV's freeze had been the binding constraint on the next phase of Korean expansion — and because it coincides with a tightening trade environment in which Vietnamese GDP growth is now widely seen as falling short of the government's 2026 8.5% target.

Shinhan Bank Vietnam — the country's largest foreign-owned bank by branch count — booked ₩58.1 billion of Q1 2026 net profit, down 16.7% year-on-year as local funding costs compressed NIM. The number is still strong in absolute terms; it is also a reminder that the Vietnam profit story is no longer linear in the way 2022–2024 made it look.

Three lessons from the first cycle still hold

• Platform acquisitions outperformed greenfield branches by roughly 3x in originations per unit of capital deployed — the KB Bukopin and Shinhan Indonesia Bank stories both confirm this, once the integration write-downs clear.
• Digital-first sub-brands (Shinhan SOL Vietnam, KB Bukopin Wokee, Hana OneQ Vietnam) scaled retail faster than any Korean bank had managed domestically in twenty years — often by skipping the bricks-and-mortar stage the parent bank had committed to in Korea.
• The SME-lending book carried higher credit losses than Korean domestic portfolios — but priced those losses, and then some, into risk-adjusted margins that still closed at 200–300 basis points above the domestic comparison.

“We used to see Korean banks as followers of Japanese expansion. In Jakarta and Hanoi, in 2026, they are the reference competitor.”

— Regional head, top-three Southeast Asian bank

The Hana and Woori drag, and the new tariff backdrop

Hana Financial's eleven overseas units posted ₩86.8 billion in 2025 — down 33% year-on-year — and Woori's overseas business slid into loss; both drags were dominated by China property-market exposure that has not yet bottomed. Q1 2026 added a fresh Indonesian provision shock at Woori Saudara. Meanwhile the macro overlay has darkened. Vietnam's reciprocal-tariff agreement with the US locked in at 20% in July 2025; Indonesia signed a separate framework reducing its rate from 32% to 19% on 19 February 2026; and on 11 March 2026 the USTR opened a Section 301 investigation into six Asian economies, including Vietnam and Indonesia, on overcapacity and forced-labour grounds.

What replaces the buy-and-fix era

The constraint is no longer ambition. It is local ownership caps, a thickening trade environment, and an SBV that has only just resumed issuing Vietnamese licences. Vietnam's 30% foreign-ownership ceiling and Indonesia's single-presence policy still frame how fast the Korean groups can scale. Nathan's view is that the next stage of growth looks less like acquisition and more like embedded partnerships with local fintechs — a pattern KB has begun to execute in the Philippines and that Shinhan is piloting in Indonesia through SOL-branded digital channels. The era of buying a domestic lender at 0.6x book and fixing it is largely behind the Korean groups. What replaces it is a lighter-capital, platform-partnership play that the Q1 2026 numbers already begin to validate.