All 15 Vietnamese banks that have experienced serious liquidity crises shared a common trait: their distress was visible in the data long before regulators intervened. That is the central finding of a new study by domestic credit rating agency FiinRatings, which identified 11 early warning indicators — five quantitative and six qualitative — drawn from cases spanning the post-2008 global financial crisis and the 2022–2023 stress period.
Balance Sheet Mismatches as the Loudest Signal
The single most consistent quantitative warning sign, recorded in all 15 distressed banks, was a persistent divergence between growth in total assets, loan balances, and customer deposits. FiinRatings illustrates the pattern with one bank whose total assets surged 288% in 2009 — driven by interbank deposits and interbank lending rather than customer credit, which rose only 31%. The following year, total assets contracted 9% while customer loans jumped 122%. The institution continued expanding aggressively, concentrating credit on related-party borrowers, until a mandatory merger in 2013.
A second example shows deposits falling 9% in 2011 while loans grew at the same pace, then deposits rising only 12% in 2012 against a 37% credit expansion. That bank simultaneously funnelled funds to affiliated companies and was forced to offer above-market rates to attract retail deposits — a combination that preceded outright insolvency.
The Four Other Quantitative Red Flags
Beyond asset-deposit mismatches, FiinRatings flags abnormalities in four further quantitative areas: the overall business model (unusual revenue or funding structure relative to peers), the asset-liability composition, capital adequacy buffers, and standalone liquidity ratios. Each of these metrics tends to deteriorate gradually rather than collapse overnight, meaning analysts and investors who track quarterly filings can often detect stress well ahead of a credit event.
The agency stresses that if loan growth consistently outpaces deposit growth, a bank is effectively plugging the gap with less stable wholesale or interbank funding — raising both liquidity and refinancing risk. The reverse case, where deposits grow much faster than lending, can signal that funds are being deployed into riskier, less transparent assets rather than straightforward commercial loans.
Qualitative Factors: Harder to See, Earlier to Appear
The six qualitative indicators are arguably more revealing because they reflect the underlying causes of risk accumulation rather than its symptoms. FiinRatings identifies the most prevalent as concentrated credit exposure to a small group of related borrowers, a track record of governance or compliance violations, and voting control concentrated among a tight cluster of individual shareholders.
Unlike balance-sheet ratios, these factors do not appear directly in financial statements, making them harder for outsiders to quantify but potentially visible earlier in regulatory filings, corporate governance disclosures, and press coverage of ownership changes. The agency notes that quantitative indicators largely reflect the consequences of accumulated risk, while qualitative ones point to the structural reasons that risk built up in the first place.
Live Stress Test on Active Banks
To validate the framework, FiinRatings applied the same 11 indicators to 12 currently operating Vietnamese banks using data from 2020 to 2025. Banks with higher credit ratings showed relatively few warning signs across the indicator set. Warning signal frequency rose noticeably among lower-rated institutions — a result that suggests the framework has practical discriminatory power rather than simply describing historical failures after the fact.
The agency is careful to caution that the appearance of one or two indicators does not constitute direct evidence of imminent insolvency risk. Each signal must be read alongside the institution's broader financial position, business model, and operating context. The framework is designed as a structured scanning tool, not a mechanical trigger.
Vietnam's Liquidity Crisis History Provides the Sample
Vietnam's banking sector has twice experienced system-wide liquidity stress since 2008, giving researchers an unusually concrete domestic dataset to work with. The 2022–2023 episode in particular — linked partly to bond market turbulence and real-estate sector strains — led to several high-profile interventions and forced the State Bank of Vietnam to deploy liquidity support measures. Those events demonstrated that credit risk can accumulate quietly across multiple reporting periods before crystallising rapidly, a dynamic the FiinRatings framework is explicitly designed to flag earlier.
Investor Takeaway
For investors holding Vietnamese bank bonds, equities, or deposit instruments, the FiinRatings checklist offers a practical due-diligence structure. Monitoring the loan-to-deposit growth gap on a rolling basis, scrutinising related-party lending disclosures, and tracking ownership concentration in smaller or lower-rated institutions can surface warning patterns that aggregate sector data tends to obscure. Given that Vietnam's banking sector remains a primary channel for credit allocation to the broader economy, early identification of stress at individual lenders carries systemic implications that extend well beyond any single balance sheet.
