A bank run occurs when a large number of depositors simultaneously withdraw their funds from a bank, typically driven by a sudden loss of confidence in the bank’s solvency — potentially forcing even a fundamentally sound bank into a genuine liquidity crisis, since banks only hold a fraction of deposits as immediately available cash.
Not financial advice. All figures are for educational reference only. Data as at August 2026. Last updated: August 2026.
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Table of Contents
- What Is It?
- How It Works in Singapore
- Example
- Advantages
- Risks & Limitations
- Insured vs Uninsured Deposits Under SDIC
- The Bottom Line
- Frequently Asked Questions
- Related Terms
Key Takeaways
- Bank runs are largely a self-fulfilling panic dynamic: banks operate on fractional reserve banking, holding only a portion of deposits as liquid cash, so a sudden mass withdrawal can outpace even a solvent bank’s available liquidity.
- In Singapore, the Deposit Insurance Scheme administered by the Singapore Deposit Insurance Corporation (SDIC) protects eligible deposits up to S$100,000 per depositor per Deposit Insurance Scheme member bank, reducing the incentive to panic-withdraw during stress events.
- MAS acts as lender of last resort and bank supervisor, with liquidity and capital adequacy requirements — such as the Liquidity Coverage Ratio — specifically designed to make Singapore banks more resilient to sudden withdrawal pressure.
- Modern bank runs can happen faster than historical ones, since digital banking lets depositors move funds instantly online rather than needing to queue at a physical branch.
- Singapore has not experienced a systemic bank run on a major bank in recent history; global episodes, such as the March 2023 US regional banking stress, are the more commonly cited real-world illustrations of the mechanism.
What Is Bank Run?
Banks don’t hold 100% of deposits as cash on hand — under fractional reserve banking, most deposited funds are lent out or invested, with only a portion kept as readily available liquidity. This is normal and central to how banks function and support lending in the economy. The vulnerability arises specifically when a large share of depositors want their money back at the same time, faster than the bank can convert its other assets into cash.
Historically, bank runs predate modern deposit insurance by a long way — the wave of bank failures during the Great Depression era in the United States was a major catalyst for the creation of deposit insurance systems worldwide, a lesson Singapore’s own SDIC scheme, established later, was designed around.
How Does It Work in Singapore?
Singapore’s Deposit Insurance Scheme, administered by SDIC, automatically protects Singapore-dollar deposits at DI Scheme member banks and finance companies, up to S$100,000 per depositor per institution — with no need to apply or pay any fee, since the scheme is funded by premiums paid by member banks. Covered deposits include savings, current, and fixed deposit accounts held by individuals and certain businesses.
Importantly, not everything held at a bank is covered: structured deposits, foreign-currency deposits, and investment or insurance products distributed through a bank are generally excluded from DI coverage — a distinction worth checking, since these products can look similar to a plain deposit account at first glance.
On the regulatory side, MAS requires banks to maintain a minimum Liquidity Coverage Ratio (LCR), ensuring they hold enough high-quality liquid assets to survive a modelled 30-day stress scenario — a requirement specifically designed to reduce vulnerability to exactly this kind of sudden withdrawal pressure.
Example
Suppose depositors at a bank heard unverified rumours about its solvency and rushed to withdraw funds simultaneously. A depositor with S$80,000 in a savings account at that bank would have their full amount protected under SDIC’s S$100,000 coverage limit even if the bank were to fail. A depositor with S$150,000, however, would only have S$100,000 protected, with the remaining S$50,000 subject to the bank’s liquidation process — illustrating why spreading large cash balances across multiple banks can matter.
Advantages
- Deposit insurance limits inform smarter cash planning. Knowing the S$100,000-per-bank coverage limit helps depositors decide whether to spread large balances across multiple institutions.
- Understanding the panic dynamic reduces unnecessary alarm. Recognising that runs are often confidence-driven, not necessarily proof of insolvency, can help depositors avoid contributing to panic based on unverified rumours.
- Awareness of MAS’s prudential rules adds useful context. Knowing about requirements like the Liquidity Coverage Ratio explains why Singapore’s banking system is generally considered resilient by international comparison.
Risks and Limitations
- Deposit insurance has a cap. Balances above S$100,000 at a single bank aren’t fully protected if that bank fails.
- Not all bank-held products are covered. Structured deposits, unit trusts, and insurance-linked products sold through a bank channel are typically excluded from DI Scheme coverage, and depositors sometimes mistakenly assume broader protection than actually exists.
- Fast-moving digital-era runs are a real risk. Even a well-capitalised bank can face acute short-term liquidity stress before regulators or the deposit insurer can intervene, given how quickly funds can move online today.
- Contagion risk. Panic at one bank can spread to other banks perceived to have similar risk exposures, even without direct evidence of trouble there.
Insured vs Uninsured Deposits Under SDIC
| Aspect | Insured (Up to S$100,000) | Not Covered by DI Scheme |
|---|---|---|
| Account types | Savings, current, and fixed deposit accounts (SGD) | Structured deposits, foreign-currency deposits, unit trusts, insurance products sold via a bank |
| Coverage limit | Up to S$100,000 per depositor, per DI Scheme member bank | Not covered by the Deposit Insurance Scheme |
| Action needed by depositor | None — coverage is automatic | N/A |
| Funded by | Premiums paid by member banks | N/A |
The Bottom Line
A bank run is fundamentally a confidence problem, not always a solvency one. Singapore’s SDIC deposit insurance, covering up to S$100,000 per depositor per bank, together with MAS’s liquidity requirements, exist specifically to make that kind of panic far less likely to matter to everyday depositors.