DAI is a decentralized stablecoin pegged to the US dollar, created by the MakerDAO protocol (now part of the Sky ecosystem). Unlike Tether or USDC, DAI is not issued by a company holding dollars in a bank. Instead, it is generated by users who lock up crypto and other assets as collateral in smart contracts, and the system is governed by holders of the MKR token. The result is a dollar-tracking token that aims to stay near $1 without a central issuer. If you are asking what is DAI, the short answer is: it is an over-collateralized, decentralized stablecoin backed by crypto and real-world assets, maintained by code and community governance.
Key takeaways
- DAI is a decentralized, dollar-pegged stablecoin created by the MakerDAO protocol on Ethereum.
- It is over-collateralized: users lock more value in crypto and other assets than the DAI they generate.
- There is no central company holding cash; smart contracts and MKR governance manage the system.
- Collateral now includes crypto assets plus real-world assets (RWAs), broadening DAI’s backing.
- DAI carries smart-contract risk, collateral and liquidation risk, and governance risk rather than single-company counterparty risk.
What is DAI?
DAI is a stablecoin designed to hold a value of about one US dollar, but it works very differently from fiat-backed stablecoins. There is no central issuer keeping dollars in a bank account. Instead, DAI is created algorithmically through the MakerDAO protocol, a system of smart contracts running on Ethereum. Users generate DAI by depositing collateral, and the protocol’s rules and incentives keep DAI’s price anchored near the dollar.
This decentralized approach is the whole point of DAI. It aims to give users a dollar-stable asset that lives entirely within decentralized finance, without depending on a single company’s solvency or a bank’s reliability. The trade-off is that DAI’s stability depends on the value of its crypto collateral, the soundness of its smart contracts, and the decisions of its governance community.
A short history of DAI and MakerDAO
MakerDAO was one of the earliest and most influential DeFi projects. It launched its first version of DAI, then called Single-Collateral DAI (Sai), in 2017, backed only by Ether. In 2019 the protocol upgraded to Multi-Collateral DAI, allowing several types of crypto to be used as collateral. This made the system more resilient and flexible.
Over time, MakerDAO evolved its collateral mix beyond purely volatile crypto. It began incorporating real-world assets (RWAs), such as tokenized exposure to short-term debt instruments, and it integrated centralized stablecoins like USDC as collateral at various points to help stabilize the peg. The project also undertook a broader rebrand and restructuring under the Sky ecosystem, which introduced a related stablecoin and governance changes. Throughout these shifts, DAI has remained the well-known decentralized dollar of DeFi. Because the ecosystem continues to evolve, check current MakerDAO/Sky documentation for the latest specifics.
How DAI works: collateral and CDPs
DAI is created through over-collateralized debt positions, often called Vaults (historically CDPs, collateralized debt positions). The process works like this:
- A user deposits an approved collateral asset into a Maker smart contract.
- Against that collateral, they generate (borrow) DAI, but always less than the collateral’s value.
- To unlock their collateral, they repay the DAI they generated, plus a fee.
Over-collateralization is essential. Because crypto collateral is volatile, the protocol requires more value locked than the DAI created. For example, a user might need to lock well over $100 of crypto to mint $100 of DAI, depending on the collateral type. This buffer protects the system if collateral prices fall.
Liquidations
If a Vault’s collateral value drops too close to the DAI it backs, the position becomes under-collateralized and is liquidated. The protocol auctions off the collateral to cover the outstanding DAI plus a penalty. This automated liquidation process is how MakerDAO keeps the system solvent and DAI fully backed. For users who generate DAI, it means watching collateral ratios carefully, because a sharp market drop can trigger liquidation and loss of collateral.
Keeping the peg
Several mechanisms keep DAI near $1. The Stability Fee (an interest-like rate on generated DAI) and savings rates that pay holders for locking DAI can be adjusted to influence demand. The system also uses arbitrage incentives and, in some configurations, modules that allow swapping DAI for other stablecoins near par. When DAI trades above or below $1, these levers and market participants push it back toward the peg.
The role of MKR governance
MakerDAO is governed by holders of its governance token, historically MKR. MKR holders vote on critical parameters: which collateral types are accepted, collateralization requirements, stability fees, savings rates, and risk settings. This makes DAI a community-governed system rather than a company product.
MKR also has an economic role in the system’s solvency. In scenarios where liquidations fail to cover bad debt, the protocol can mint and sell MKR to recapitalize, which dilutes MKR holders. Conversely, fees collected by the system can be used in ways that benefit MKR. This aligns governance incentives with keeping the protocol healthy. Governance is powerful, but it is also a risk vector: poor decisions, low voter participation, or governance attacks could harm the system.
What backs DAI today
DAI’s backing has broadened well beyond a single asset. Collateral has included major crypto assets like Ether and wrapped Bitcoin, other stablecoins, and tokenized real-world assets such as short-term debt exposure. This diversification helps stabilize DAI but also introduces nuance: when DAI is partly backed by centralized stablecoins or RWAs, it inherits some exposure to those assets’ risks, which some argue reduces DAI’s pure decentralization. The exact collateral mix changes through governance, so the current composition is best confirmed in official Maker/Sky dashboards.
What people use DAI for
DAI is widely used across DeFi:
- Stable trading and collateral. DAI is a common stable leg in decentralized exchange trades and a frequently accepted collateral asset.
- Liquidity provision. DAI is paired in many liquidity pools across DeFi.
- Borrowing and lending. Users supply or borrow DAI in lending markets; see our look at crypto lending.
- Earning a savings rate. DAI holders can sometimes earn a protocol savings rate by locking DAI, a yield set by governance rather than a fixed promise.
- Decentralized cash. Users who prefer to avoid a single corporate issuer hold DAI as on-chain dollars.
DAI vs centralized stablecoins
The key difference between DAI and stablecoins like USDT or USDC is the source of trust. USDT and USDC rely on a company holding reserves and on attestations of those reserves. DAI relies on over-collateralization, smart contracts and governance. This means DAI is more resistant to a single company’s failure or to address-level freezing of the core token, which appeals to users who value decentralization. The cost is exposure to crypto collateral volatility, smart-contract risk, and the complexity of governance. Many DeFi users hold DAI alongside centralized stablecoins to balance these trade-offs. To explore the broader ecosystem, see our roundup of DeFi projects.
Risks of holding DAI
- Smart-contract risk. DAI depends on complex code; bugs or exploits could threaten the system or user funds.
- Collateral and liquidation risk. If you generate DAI, falling collateral prices can trigger liquidation. As a holder, severe collateral crashes could stress the peg.
- Governance risk. Decisions by MKR holders shape DAI’s safety; flawed or captured governance is a real concern.
- Indirect centralization risk. When DAI is backed partly by centralized stablecoins or RWAs, it inherits some of their counterparty and regulatory exposure.
- Peg risk and no insurance. DAI can deviate from $1 under stress and is not a bank deposit or insured asset.
How to get DAI
The simplest way to get DAI is to buy or swap for it. You can purchase it on many exchanges or swap another asset for DAI on a decentralized exchange using a self-custody wallet. Advanced users can generate DAI themselves by locking collateral in a Maker Vault, but that involves managing collateral ratios and liquidation risk. If you are new, learning the fundamentals of buying and storing crypto first, as covered in our crypto wallet guide, will make using DAI much safer.
FAQ
Is DAI safe?
DAI has operated through multiple market cycles and is one of DeFi’s most established stablecoins, but it is not risk-free. It depends on smart contracts, the value of its crypto and real-world-asset collateral, and community governance. It is not a bank deposit and carries no insurance. Treat DAI as a robust but technically complex tool with smart-contract, collateral and governance risks.
How does DAI stay pegged to $1?
DAI stays near $1 through over-collateralization, automated liquidations of risky positions, adjustable stability and savings rates set by governance, and arbitrage incentives. In some configurations, modules let DAI be swapped for other stablecoins near par. Together these mechanisms push DAI back toward the dollar when it drifts, though the peg can still wobble under extreme stress.
What is the difference between DAI and USDC?
USDC is centralized: Circle issues it and holds dollar reserves, publishing monthly attestations. DAI is decentralized: it is generated by users locking crypto and other collateral in MakerDAO smart contracts and governed by MKR holders. DAI avoids single-company counterparty risk but adds smart-contract and collateral risk. Notably, DAI has at times used USDC as part of its collateral.
What is MKR and why does it matter for DAI?
MKR is MakerDAO’s governance token. MKR holders vote on the parameters that keep DAI stable, such as accepted collateral, collateral ratios, fees and savings rates. MKR also backstops the system: if liquidations leave bad debt, the protocol can mint and sell MKR to recapitalize, diluting holders. This ties MKR’s value and incentives to DAI’s long-term stability and safety.
Crypto is volatile and risky; this is education, not financial advice. Do your own research.
