An algorithmic stablecoin tries to hold its peg using software rules and market incentives instead of holding a full reserve of cash or collateral. Rather than backing every token 1:1 with dollars, it expands or contracts the token supply algorithmically to push the price back toward its target. This design is capital-efficient but has proven fragile.
How algorithmic stablecoins work
The classic model pairs the stablecoin with a second, volatile “governance” or “seigniorage” token. When the stablecoin trades above its peg, the protocol mints more of it; when it trades below, it incentivizes users to burn the stablecoin in exchange for the volatile token. In theory, arbitrageurs are paid to keep the price at $1. The system relies entirely on continuous demand and market confidence rather than redeemable reserves.
Why they fail: the “death spiral”
The weakness is reflexive. If confidence drops and the stablecoin falls below its peg, users rush to exit, the protocol mints large amounts of the volatile token to absorb selling, and that token’s price collapses — which destroys the very backstop meant to defend the peg. This feedback loop is known as a death spiral. The most prominent example was TerraUSD (UST) and its companion token LUNA, which collapsed in May 2022 and erased tens of billions of dollars in value within days.
What is NOT an algorithmic stablecoin
It is easy to mislabel other designs:
- DAI is over-collateralized — it is backed by more than a dollar of crypto and real-world assets per token, locked in smart contracts. That is collateral-backed, not purely algorithmic.
- USDe (Ethena) is a “synthetic dollar” that aims to hold its value using a delta-hedging strategy across spot and derivatives positions, not by minting an unbacked seigniorage token. It is a different mechanism again.
Are algorithmic stablecoins regulated?
After the UST collapse, regulators grew sharply more cautious. Several frameworks now restrict or effectively ban purely algorithmic stablecoins for retail use, favoring fully-reserved fiat-backed designs. That regulatory direction is one reason most large stablecoins today are reserve-backed.
Frequently asked questions
Are algorithmic stablecoins safe?
They are widely considered the highest-risk stablecoin design because the peg depends on confidence and incentives rather than redeemable reserves.
Is DAI an algorithmic stablecoin?
No. DAI is over-collateralized by crypto and other assets, which is a different and more conservative model.
What happened to TerraUSD?
UST lost its peg in May 2022 and entered a death spiral with LUNA, collapsing to near zero and prompting tighter stablecoin regulation worldwide.
This article is educational information about stablecoin design and is not financial advice.
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Disclaimer: The content on this page is for informational purposes only and does not constitute financial advice. Always do your own research before making investment decisions.
Elena Petrova is a regulatory correspondent specializing in crypto law and policy with over 10 years of financial journalism experience. Formerly a finance reporter at Reuters, Elena covers SEC enforcement, MiCA implementation, and global stablecoin regulations. She holds a J.D. from Georgetown Law and is a member of the New York State Bar. Her regulatory analysis is frequently referenced by compliance officers and legal teams at major exchanges.
Conflicts of interest
I have no current legal practice or retainer relationships with any cryptocurrency company. Past employment relationships are listed publicly.
