Collateral is property provided to secure a debt or another obligation. It gives the lender another way to recover payment if the borrower fails to meet the agreed terms. It does not replace repayment or guarantee that every loss will be covered. The contract and applicable law determine who can use the property and when it can be sold.
The ECB, European Central Bank, explains Collateral through a familiar example: a mortgage. If the borrower does not repay, the bank may use the pledged property to recover payment under the specified conditions. A bitcoin-backed loan raises a similar question: what right does the lender obtain, and when can it exercise it? Pavel should not confuse providing collateral with paying off his loan. The debt does not disappear. Collateral secures a particular obligation, and selling it must be supported by the agreed terms and law. [1]
An asset’s price can change before the lender manages to sell it. The ECB therefore explains a Haircut: a deduction from the value recognised for collateral purposes. In our own example, Pavel’s assets have a market value of 100,000 USD. After a 20% haircut, the lender recognises 80,000 USD. A Haircut is not a fee or a loss that has already occurred; it creates a valuation buffer. It does not say what a sale would actually bring today. The rate is part of our example, not a loan offer. [2]
Pavel borrows 60,000 USD against these assets. LTV, Loan-to-Value, is debt divided by the value of collateral. Against the market value it is 60%. Coverage after the haircut instead equals 80,000/60,000, about 133.3%: recognised value divided by debt. One asks how large the debt is relative to the property; the other asks how well the property covers the debt. LTV of 60% and a Haircut of 20% are therefore not interchangeable rates. The ECB explains the haircut principle; these calculations are our own model using the same currency throughout. [2]
In our example, market value falls to 70,000 USD. After the same 20% haircut, recognised value is only 56,000 USD, or 4,000 USD less than the debt. The ECB describes revaluation and a requirement to provide more assets or cash when coverage is insufficient under its framework. Such a request is called a Margin call. Pavel therefore needs to know the rules for maintaining collateral. The particular contract or framework sets the deadline and consequences, not this calculation. Nor does the shortfall alone determine how much extra property is needed if that property also receives a haircut. [3]
The Basel banking framework, in CRE22, requires legally effective documentation and timely ability to realise collateral for it to be recognised: sell or take possession under the applicable rules. For Pavel, the practical distinction is that a BTC transfer recorded on the blockchain, the public chain of transactions, does not by itself establish those rights or creditor priority. Carrying out a transfer technically and having a legal claim are different matters. A banking standard is also not automatically the contract for his private bitcoin loan. [4]
Suppose the lender accepts a security issued by Pavel’s own company as collateral. If the company cannot manage its debts, that security may lose value at the same time. Basel CRE22 highlights the weak protection from such connected collateral. Liquidity matters too: the ability to sell without a large price reduction, as does concentrating risk in a single type of asset. A high valuation when the loan begins does not guarantee the same proceeds in a quick sale. [4]
Pavel should also understand where his BTC goes: who controls transfers, who holds it in custody and whether it can secure another obligation. Reuse is not an automatic feature of every loan; it depends on the agreed rights. Basel CRE22 addresses custody, reuse and surrendering rights over property provided as collateral. A number on a statement is therefore not, by itself, proof that the assets are freely available for immediate return. Pavel needs to understand the actual arrangement, not just the service’s name. [4]
When Pavel repays the principal, the amount originally borrowed, he still checks outstanding interest, costs and release conditions. A screenshot showing zero principal may not prove that every obligation is settled and the assets are no longer encumbered. With BTC, the actual return transfer or restoration of control under the agreement must also be checked. ECB and Basel materials explain general principles, not the terms of a particular loan. The collateral arrangement ends when those conditions are fulfilled, not merely when a calendar date arrives. [1] [4]
For the clearest picture, read this entry together with Prime brokerage, Rehypothecation, Forced liquidation, Credit risk. The reverse links also lead from Prime brokerage, Rehypothecation, Counterparty risk, Settlement risk.