A percentage reduction from an asset's reference value used to determine how much secured credit or exposure it can support.
A collateral haircut is a percentage reduction from an asset’s reference value used to calculate its recognized or lending value. If collateral worth $100 receives a 10% haircut, it supports $90 of value before other limits, reserves, or transaction adjustments.
Haircuts provide a buffer against price declines, credit deterioration, liquidity costs, valuation uncertainty, settlement delay, and the time needed to liquidate collateral after default. They reduce exposure but do not guarantee full recovery.
If the haircut is stated as a percentage reduction:
The haircut can be recovered from the two values as:
For a target exposure, the required reference value is:
These formulas omit thresholds, minimum transfer amounts, accrued amounts, concentration limits, foreign-exchange adjustments, and legal or sale costs unless the agreement includes them separately.
A cash lender advances $9.5 million against securities with a reference market value of $10 million.
The securities provide an initial $500,000 value buffer. If their market value falls to $9.7 million and the required haircut remains 5%, recognized value becomes:
$9.7 million x 95% = $9.215 million
That is $285,000 below the $9.5 million cash exposure before considering interest or contractual thresholds. The agreement may require additional collateral or a cash payment. Actual repo mechanics depend on the master agreement, valuation process, margin frequency, and settlement terms.
The same economics can be expressed in opposite directions:
| Convention | Expression | Example on $100 |
|---|---|---|
| Haircut | Percentage deducted from reference value | 5% haircut gives $95 recognized value |
| Valuation or margin percentage | Percentage of reference value recognized | 95% percentage gives $95 recognized value |
| Overcollateralization | Collateral above the exposure | $100 collateral against $95 exposure |
A 5% haircut and a 95% valuation percentage can describe the same recognized value. A requirement for collateral equal to 105% of exposure is close but not mathematically identical to a 5% haircut: $95 / 0.95 = $100, while $95 x 1.05 = $99.75.
| Risk driver | Why it matters |
|---|---|
| Price volatility | Value can move before collateral is sold or replaced |
| Market liquidity | A large or urgent sale may require a price concession |
| Credit quality | Default or downgrade can reduce both value and market access |
| Duration and maturity | Longer exposure to rates and credit spreads can increase price sensitivity |
| Currency mismatch | Exchange-rate movement can change coverage |
| Valuation confidence | Modeled or stale prices may be less reliable than observable market prices |
| Concentration | A large single-name or asset-class position can be harder to liquidate |
| Wrong-way risk | Collateral may deteriorate when the counterparty weakens |
| Liquidation period | More time to close out can allow a larger adverse move |
| Operational and legal risk | Custody, settlement, and enforceability can delay realization |
The Federal Reserve’s collateral guidance illustrates this logic by assigning lending values based on asset characteristics and applying valuation margins designed to address risk and liquidation-period volatility. Private lenders and market agreements use their own methods.
In debt restructurings, “haircut” can also mean a reduction in the amount creditors receive relative to a claim’s contractual value. That is a different use from a collateral valuation haircut.
A haircut that responds to current volatility may rise during market stress. That protects the lender but forces the borrower to post more collateral or reduce exposure when liquidity is scarce. If many firms make the same adjustment at once, collateral sales and funding pressure can reinforce falling prices.
For this reason, regulated infrastructures and risk managers may use stressed periods, floors, buffers, or limits on procyclical changes. A stable haircut is not automatically conservative, however; it can become inadequate if risk changes materially.
A haircut is an estimate, not insurance. Extreme price gaps, market closure, issuer default, legal challenge, settlement failure, concentration, or a longer-than-assumed liquidation can exceed the buffer. Haircut increases can also create funding stress and forced sales for the collateral provider.
This page is educational and is not trading, lending, legal, regulatory, or investment advice.