What is CeFi? Understanding Centralised Finance

Centralised Finance, or CeFi, describes crypto-related financial services that are run by companies, not by [decentralised protocols](https://www.coinjar.com/uk/learn/what-is-crypto.

It is often the link between traditional money such as pounds or euros and digital assets such as Bitcoin or Ethereum.

If you have bought Bitcoin on a major exchange, you have probably used CeFi.

These platforms combine blockchain-based assets with a more familiar interface, such as sign‑in screens, email support and bank transfers, although this familiarity should not be confused with the consumer protections you may be used to in traditional banking.

How CeFi works

The core feature of CeFi is custody. Custody refers to who controls the private keys that allow movement of funds on a blockchain.

In Decentralised Finance (DeFi), you usually hold your own keys in a self‑custody wallet and interact directly with smart contracts on the blockchain. In CeFi, the company controls the keys.

When you deposit money or crypto with a CeFi provider, you hand over control of those assets and receive a claim against the company instead. You rely on the firm to honour withdrawal requests and keep accurate records.

This is similar in concept to how a bank deposit works. However, unlike UK bank accounts, crypto deposits are generally not covered by schemes such as the Financial Services Compensation Scheme (FSCS). If something goes wrong, you may have limited or no recourse.

Because a central company manages the system, CeFi platforms can offer features that are difficult for purely decentralised protocols, such as password resets, customer support and sometimes the ability to cancel or adjust transactions that have not yet been processed.

These conveniences come with trade‑offs, including increased counterparty risk and a loss of direct control over your assets.

Key components of the CeFi ecosystem

CeFi platforms copy many familiar financial services, then apply them to digital assets. Below are some of the main building blocks.

Order book exchanges

Most large centralised cryptocurrency exchanges use a Central Limit Order Book model. This is a digital marketplace where the platform matches buyers and sellers.

• Speed
  Trades are usually matched on the company’s internal systems rather than directly on a blockchain. This can make trading quick and relatively low cost, although outages and delays can still occur, especially during volatile markets.

• Liquidity
  Popular exchanges often have deep markets, which can make it easier to buy or sell larger amounts without moving the price too much. However, liquidity can dry up suddenly during market stress, which may make trading more difficult or expensive.

Although this structure can be efficient, users rely on the exchange to manage orders fairly, keep systems secure and actually hold the assets that their account balances indicate.

Crypto lending and borrowing

Some CeFi platforms offer lending and borrowing products that look similar to bank savings and loan services. These are complex financial products and are not risk‑free.

• Rates
  Platforms may pay interest to depositors and charge interest to borrowers. Unlike many DeFi protocols, rates are usually set by the company. They may be influenced by institutional demand, the platform’s risk appetite and its profit targets. High advertised returns typically involve higher risk, including a higher chance of losing some or all of your capital.

• Collateral
  Borrowers often provide cryptoassets as collateral. If the value of this collateral falls below a set level, the platform can sell it to cover the loan. This process is called liquidation. In fast‑moving markets, liquidations can be sudden, and borrowers can lose their collateral quickly.

It is important to understand that interest accounts and lending products offered by crypto firms are generally not equivalent to bank savings accounts. They usually do not benefit from deposit protection schemes and may be unsecured.

Fiat on‑ramps

One of the most important roles of CeFi is acting as a link between traditional money and crypto.

A fiat on‑ramp allows you to use a bank transfer or card payment in currencies such as GBP or EUR to buy crypto. The platform processes the payment, updates your account balance and handles the blockchain transfers in the background.

This makes initial access to crypto more straightforward for many people. However, it also means that identity checks, payment limits, fees and regulatory rules will apply, much like with other financial services.

CeFi vs DeFi: The core differences

CeFi and DeFi can both offer ways to trade, borrow and lend, but they are built on different ideas and come with different risks.

Trust

In CeFi, you place trust in people and organisations. You depend on the company to be honest, solvent and competent, and to maintain strong security practices. If the company fails or is hacked, customers can be exposed.

In DeFi, you usually rely more on code. Smart contracts execute transactions according to pre‑defined rules on the blockchain. This can improve transparency, but bugs, design flaws or governance issues can still lead to losses.

Regulation and access

CeFi platforms that operate in or target the UK typically carry out Know Your Customer (KYC) and anti‑money laundering checks. You will usually need to provide proof of identity, and address, to use them. This can bring the platforms closer to regulatory standards, although it does not remove investment risk.

DeFi protocols are often permissionless. In many cases, anyone with a compatible wallet and an internet connection can interact with them. This can increase access, but it also means there may be little or no formal customer support, and there might be fewer ways to seek redress if something goes wrong.

Censorship and account freezes

Because CeFi platforms are controlled by companies that must follow local laws, they can restrict or freeze accounts. This might happen if they detect suspicious activity or receive a lawful request from an authority.

DeFi protocols are often designed so that no single party can block transactions. In practice, however, front‑end websites, infrastructure providers or governance groups may still influence how easy it is to use certain protocols or assets.

Real‑life examples

The crypto market includes many CeFi companies that perform different roles. The examples below are for illustration only. They are not recommendations or endorsements.

• Exchanges
  CeFi crypto exchanges act as common entry points to crypto. They typically provide order book trading, account balances in fiat and crypto, and features such as recurring buys. Users rely on the exchange to safeguard their assets and maintain accurate internal records.

• Lenders
  Some companies focus on lending and borrowing. Customers may deposit assets such as Bitcoin or stablecoins with the aim of earning a yield, or borrow cash against their holdings. As past failures in this sector have shown, these products can carry a significant risk of loss, especially if the firm’s lending activities are aggressive or poorly managed.

• Brokerages and trading apps
  Some traditional broker or investment apps have added crypto exposure. In many cases, they hold the assets in custody on your behalf and may not allow withdrawals to a private wallet. You might only be able to buy or sell within that app. This can limit your ability to move or use your crypto elsewhere.

Before using any provider, it is important to review their terms, understand where they are based, check whether they are registered or regulated in your jurisdiction, and assess what protections, if any, apply to your money or assets.

Risks and how to stay safe

CeFi can be convenient and familiar, but it introduces several important risks. You should understand these before using any service.

Counterparty risk and insolvency

The main risk in CeFi is counterparty risk. This is the risk that the company holding your funds cannot meet its obligations.

If a platform mismanages customer assets, takes on excessive leverage or suffers a large loss, it can become insolvent. In that situation, customers may become unsecured creditors and could lose all or part of their holdings. This has happened before in the crypto sector.

Unlike UK bank deposits, crypto deposits are rarely covered by statutory compensation schemes. Even if a company says that assets are held separately, recovery in an insolvency process can be complex, uncertain and slow.

Regulatory freezes and restrictions

Because CeFi companies interact with the traditional financial system and are subject to local rules, they can be required to freeze or block accounts.

This may occur due to court orders, sanctions, regulatory action or internal compliance checks. While this is part of how anti‑money laundering controls work, it also means that you do not have complete control over assets stored on these platforms.

Security breaches and operational failures

Centralised platforms can hold large amounts of crypto in a small number of wallets, which makes them attractive targets for hackers.

Reputable platforms use security practices such as cold storage and multi‑signature controls. Even so, no system is entirely risk‑free. Losses can occur due to external hacks, internal fraud, software bugs or simple operational errors.

You are also exposed to risks such as system outages, withdrawal suspensions or trade interruptions, particularly during high‑volatility events.

How to reduce your risk

You cannot remove risk entirely, but there are practical steps that may help you manage it.

• Diversify
  Avoid holding all your crypto on a single platform. Spreading your exposure between CeFi and self‑custody can reduce the impact if one company fails. Remember that diversification does not guarantee against loss.

• Consider self‑custody for long‑term holdings
  Many users choose to keep assets they intend to hold for a long time in a self‑custody wallet, such as a hardware wallet, where they control the private keys. This removes counterparty risk, but it introduces new risks, such as loss or theft of your keys, and irrecoverable mistakes. Only do this if you fully understand how self‑custody works.

• Research providers carefully
  Take time to understand how a platform operates. Look for clear information on who runs the company, where it is registered, how it stores assets and how it generates any yield it offers.
  Be particularly cautious of products advertising unusually high returns. Higher returns usually reflect higher risk, including a higher chance of total loss.

• Check regulatory status
  For UK users, check whether the firm appears on the FCA register, and whether it is authorised, registered for cryptoasset activities, or neither. Registration or authorisation does not remove investment risk, but it gives some indication of regulatory oversight. Be wary of firms that are not registered with the FCA, or appear on the FCA warning list.

Why CeFi matters

Despite the risks, CeFi still plays an important role in the wider crypto market.

For many people, it is the first point of contact with digital assets, because it connects familiar tools such as bank transfers and cards with crypto wallets and exchanges. Customer support, account recovery and user‑friendly interfaces can make it easier for newcomers to get started, compared with interacting directly with complex blockchain tools.

At the same time, CeFi should not be confused with a traditional bank. The protections, regulations and safeguards are very different, and losses can be permanent. DeFi continues to grow as an alternative, but CeFi remains a key part of the infrastructure that links crypto to the existing financial system.

Before using any CeFi service, consider your financial situation, your risk tolerance and your ability to withstand a total loss of your investment. Cryptoassets are not suitable for everyone.