The Basel Agreement usually refers to the first Basel capital accord, which set minimum international standards for how much capital banks should hold against risky assets.
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Core mechanics
The basic logic is simple:
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\text{Capital ratio} = \frac{\text{Regulatory capital}}{\text{Risk-weighted assets}}
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Instead of treating every asset as equally risky, the framework assigns different weights to different exposures. A safer asset gets a lower weight than a risky loan, so the required capital depends on the bank’s portfolio mix, not just its total size.
Why it matters
Bank capital is a loss-absorbing buffer. If a bank suffers credit losses, its capital falls before depositors or the payment system are hit. Basel tried to make cross-border banking more stable by giving regulators a common minimum standard.
Policy context
Basel I improved comparability, but it was also crude. Risk weights were broad, banks had incentives to shift toward assets that looked low-risk on paper, and later crises showed that capital regulation alone is not enough without supervision, liquidity rules, and resolution tools.
That is why later frameworks such as Basel II and Basel III became more detailed.
Knowledge Check
### What problem was the Basel Agreement mainly trying to address?
- [x] Banks holding too little capital relative to the risks they take
- [ ] Households paying too much income tax
- [ ] Governments running trade deficits
- [ ] Firms producing below capacity
> **Explanation:** Basel focused on bank solvency by requiring a minimum capital buffer against risky assets.
### Why does Basel use risk-weighted assets instead of total assets alone?
- [x] Because different assets expose banks to different amounts of risk
- [ ] Because banks are not allowed to hold government bonds
- [ ] Because total assets cannot be measured
- [ ] Because capital ratios ignore loan portfolios
> **Explanation:** A loan to a risky borrower and a short-dated government security do not create the same expected loss, so the framework adjusts for that difference.
### What was a major weakness of the original Basel approach?
- [x] Its risk buckets were relatively simple and sometimes easy to game
- [ ] It banned all international lending
- [ ] It eliminated the need for supervision
- [ ] It applied only to central banks
> **Explanation:** Broad categories improved consistency, but they also created incentives for regulatory arbitrage and left important risks outside the framework.