Summary:
- There are four main types of stablecoins, grouped by what backs them: fiat-backed, crypto-backed, algorithmic, and commodity-backed.
- Fiat-backed stablecoins hold cash and cash-equivalent reserves at a 1:1 ratio and are the dominant choice for business payments.
- Crypto-backed stablecoins are over-collateralized with crypto; algorithmic stablecoins hold little or no reserve and rely on supply mechanisms to hold their peg.
- Commodity-backed stablecoins track a physical asset like gold, serving as a store of value rather than a payments tool.
- Stablecoins also differ by governance, from single-issuer coins to DAO-governed ones like DAI; newer "open" models such as Open USD stay fiat-backed but share governance and reserve economics across the companies that adopt them.
A stablecoin is not one single thing. The term covers several designs, backed and governed in very different ways, and the difference decides which one fits a business need: a token that settles payments reliably, or one that carries risk you did not price in.
There are four primary types of stablecoins, grouped by what backs them: fiat-backed, crypto-backed, algorithmic, and commodity-backed. They also differ on a second axis, how they are governed, which this guide covers after the four types. The guide explains how each type holds its value, where each is strong, and which fits which business use case.
What is a stablecoin?
A stablecoin is a digital token designed to hold a steady value, usually pegged to a fiat currency such as the US dollar. Most stablecoins target a 1:1 peg, so one token is meant to always be worth one dollar.
Stablecoins exist to combine the stability of fiat with the speed and programmability of blockchains. They settle on-chain, around the clock, including weekends and holidays when bank rails pause. What separates one stablecoin from another is the mechanism that keeps the price stable. That mechanism is what the types below describe.
The main types of stablecoins
Stablecoins are grouped by what backs them and how they hold their peg. Four types dominate the market and the table below summarizes the landscape.
The most important split is between stablecoins that hold real reserves and those that do not. Reserve-backed types (fiat, crypto, commodity) have assets behind each token. Algorithmic stablecoins rely on code and market incentives instead, which makes them behave very differently under stress.
The major stablecoins by name
A business rarely chooses a type in the abstract. It chooses a specific stablecoin. The table below maps the most widely used stablecoins to their issuer, type, and primary business use, so the categories above connect to the names a business actually encounters.
Each stablecoin in the table is explained in its type section below.
Fiat-backed stablecoins
Fiat-backed stablecoins are the most widely used type, and the default choice for business payments. Each token is backed by reserves of cash and cash-equivalent assets held by the issuer at a 1:1 ratio. Users deposit fiat, receive stablecoins, and can redeem them back to fiat.
The two largest fiat-backed stablecoins are USD Coin (USDC) and Tether (USDT), which together make up roughly 84% of the roughly $309 billion stablecoin market as of mid-2026. Both target a 1:1 dollar peg and are accepted across most exchanges, wallets, and payment platforms. Reserve composition varies by issuer. USDC is backed by US dollar-denominated assets, while Tether reports reserves spread across US dollar holdings, secured loans, precious metals, and other investments.
The strength of fiat-backed stablecoins is simplicity and trust. A token redeemable 1:1 for dollars, backed by audited reserves, is the easiest design for a business or auditor to understand. That is also why regulators tend to favor fiat-backed models over riskier designs.
For a direct comparison of the two largest fiat-backed stablecoins for company use, see our guide to USDT vs USDC for business.
Crypto-backed stablecoins
Crypto-backed stablecoins are backed by other cryptocurrencies rather than fiat. Because crypto prices move, these stablecoins are over-collateralized: more value is locked in reserve than the stablecoin issued. A one-dollar crypto-backed stablecoin might require two dollars of crypto behind it, creating a buffer against price swings.
The best-known example is DAI. Users lock Ethereum or other assets into a smart contract, and DAI is generated against that collateral. If the collateral value falls too far, the system liquidates it automatically to keep DAI backed. The mechanism runs on-chain through smart contracts rather than a central issuer holding bank reserves.
The trade-off is capital efficiency and complexity. Over-collateralization ties up more capital than a fiat-backed model, and the design depends on the stability of the underlying crypto. The benefit is decentralization. Crypto-backed stablecoins can operate without a central company holding fiat, which suits on-chain and DeFi-native use cases.
Algorithmic stablecoins
Algorithmic stablecoins hold little or no reserve. Instead of assets, they use code to maintain the peg, adjusting supply automatically by minting and burning tokens as demand changes. When demand pushes the price above the peg, supply increases; when demand falls, supply contracts.
What sets this type apart is structural. With no reserve to redeem against, the peg depends entirely on market confidence and the incentive mechanism holding up under stress. When confidence weakens, the mechanism can unwind quickly.
The clearest example is the collapse of TerraUSD (UST) in May 2022. UST held its peg through a mint-and-burn link with a sister token, LUNA. A run began on May 7, 2022, after large withdrawals from Anchor Protocol, which had offered UST depositors a yield of 19.5%. As holders rushed to exit, the mechanism hyperinflated LUNA: its supply exploded from 1 billion to 6 trillion tokens, and its price fell from around $80 to almost zero in days. The episode is the most-cited example of how a reserve-free design can behave under stress.
Some algorithmic models, such as Ampleforth (AMPL), use a rebasing approach that adjusts supply across all holders. These remain experimental and are rarely used for business payments.
Commodity-backed stablecoins
Commodity-backed stablecoins track the value of a physical asset, most often gold. One token represents a fixed unit of the commodity. For PAX Gold (PAXG), one token represents one fine troy ounce of gold held in reserve, and Tether Gold (XAUT) follows a similar model with redemption for physical gold.
This type serves a different purpose from the others. A gold-backed token is a store of value and an inflation hedge, not a dollar-pegged payments tool. Its price moves with the commodity, so it does not hold a stable dollar value the way fiat-backed stablecoins do.
For businesses, commodity-backed stablecoins are niche. They matter for treasury strategies that want on-chain exposure to gold, but they are not the instrument for paying vendors or running payroll.
Beyond backing: how a stablecoin is governed
The four types above sort stablecoins by what backs them. A second axis matters too: who governs the coin and who keeps the economics its reserves generate. Governance runs along a spectrum, from a single controlling issuer, to a decentralized DAO, to a newer shared, or open, model in between.
Single-issuer models still dominate the stablecoin market, but regulators are increasingly focused on multi-issuer and multi-issuance structures, suggesting that shared or networked issuance models are becoming more relevant. One emerging variation is a “shared/open” governance model, where reserve economics may be shared with adopters rather than kept solely by a single issuer. Open USD is one example of this approach (as described by Open Standard) — see our Open USD explainer for details.
Which type of stablecoins fits which business use case?
The right stablecoins depends on the job. Matching type to use case avoids both unnecessary risk and unnecessary complexity.
- Payments and settlement. Fiat-backed stablecoins are the practical default. Their 1:1 redeemability and broad acceptance make them the simplest choice for paying vendors, contractors, and cross-border invoices.
- Treasury and holding dollar value. Fiat-backed stablecoins again fit best, because a business wants a steady dollar value it can spend, not exposure to a volatile asset.
- On-chain and DeFi-native operations. Crypto-backed stablecoins suit businesses that operate primarily on-chain and prefer a decentralized design without a central fiat issuer.
- Store of value or inflation hedge. Commodity-backed stablecoins give on-chain exposure to gold, a treasury choice rather than a payments one.
- Experimentation, not day-to-day operations. Algorithmic stablecoins are mainly used as an experimental instrument rather than an operational one, since their peg relies on supply mechanics instead of reserves.
See how stablecoin payments work for businesses.
How stablecoins differ
The deepest difference between stablecoin types is what you have to trust. Fiat-backed and commodity-backed stablecoins ask you to trust an issuer and its reserves, which is why reserve transparency and independent audits matter. Crypto-backed stablecoins ask you to trust on-chain collateral and liquidation logic, which is visible but exposed to crypto volatility. Algorithmic stablecoins ask you to trust a mechanism with no reserve to fall back on.
Reserve quality and transparency are the practical signals to check. A stablecoin backed by cash and cash-equivalent assets, with regular attestations, is more resilient than one backed by opaque or volatile assets.
How Reap Can Help
Most businesses do not operate on a single stablecoin, and working with each one separately adds cost. Reap reduces that to one integration across stablecoin rails.
For business spending and operations, Reap Direct lets a business run a stablecoin treasury with card spend, expense management, and payments, all from one dashboard.
For platforms building their own finance programs, the Reap API offers stablecoin funding in USDC and USDT across multiple blockchains, global fiat payouts over SWIFT and local rails, and card issuing as a Visa Principal Member, all through one integration.
Conclusion
The stablecoin ecosystem is not one product but several designs with different trade-offs. Fiat-backed stablecoins lead for payments and treasury because they hold transparent reserves and redeem 1:1. Crypto-backed stablecoins serve on-chain use cases, commodity-backed ones serve as a store of value, and algorithmic stablecoins remain the most experimental design. Governance is a second axis: stablecoins range from single-issuer to DAO-governed, and newer open models like Open USD stay fiat-backed while sharing ownership and reserve economics across adopters. The right choice always comes back to the same question: what is the stablecoin for, and how much do you need to trust what stands behind it.
FAQ
What are the main types of stablecoins?
The four main types of stablecoins are fiat-backed, crypto-backed, algorithmic, and commodity-backed. They are grouped by what backs each token. Fiat-backed stablecoins hold cash reserves, crypto-backed ones hold over-collateralized crypto, algorithmic ones use supply mechanisms with little reserve, and commodity-backed ones track a physical asset like gold.
What is the most common type of stablecoin?
Fiat-backed stablecoins are the most common and most widely used type. They hold cash and cash-equivalent reserves at a 1:1 ratio and can be redeemed for fiat. The two largest, USDC and USDT, are both fiat-backed and together make up roughly 84% of the roughly $309 billion stablecoin market as of mid-2026. Their simplicity and redeemability make them the default for business payments.
Which stablecoin is best for business?
For most business payments, generally fiat-backed stablecoins are the practical choice because they hold a steady dollar value and are widely accepted. The best specific stablecoin depends on the use case, reserve transparency, and the networks a business operates on. Businesses should confirm current reserve and regulatory details before relying on any single stablecoin.
Are algorithmic stablecoins safe?
Algorithmic stablecoins work differently from reserve-backed types. They hold little or no reserve and rely on a supply mechanism to hold the peg, so they depend heavily on market confidence. In the May 2022 collapse of TerraUSD, that mechanism unwound quickly once confidence fell. They are rarely used for everyday business funds.
How are stablecoins backed?
Stablecoins are backed in different ways depending on type. Fiat-backed stablecoins hold cash and cash-equivalent reserves. Crypto-backed stablecoins hold over-collateralized cryptocurrency. Commodity-backed stablecoins hold a physical asset such as gold. Algorithmic stablecoins hold little or no reserve and instead use code to manage supply and maintain the peg.
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