How Much Can You Borrow Against Stocks? Loan Ratios Are Not Universal

There is no single market-wide loan ratio

Banks, brokers, and securities-finance firms use different credit and collateral rules. The same security can receive different treatment based on liquidity, concentration, credit, and market risk.

A current securities-finance rule is an example, not a universal standard

Current Yuanta Securities Finance operating rules set a maximum of 60% of the prior close for certain listed/OTC securities, and 40% for securities not eligible for margin trading. This does not apply universally to every lender.

Borrowing near the maximum leaves less buffer

The more you borrow relative to collateral value, the faster a market decline can push the maintenance ratio toward a warning or call level.

Available credit is not the same as safe credit

A lender’s maximum is not automatically a prudent personal limit. A safer amount depends on stress-tested price declines and your ability to repay from cash flow.

What to check before borrowing

• Provider and any restrictions on loan use
• Advance rate, interest rate, term, and renewal rules
• Maintenance formula, call threshold, deadline, and cure level
• Whether collateral can be sold / substituted and liability for any shortfall after disposal