Frax vs SPOT Cash: peg design, risks and TVL (2026)

Frax and SPOT Cash use different definitions of stability. Frax is designed to trade at one US dollar and uses algorithmic market operations contracts, Fraxlend, Fraxswap and Curve as stability tools. Its design can also be extended through governance. That gives Frax a stated price target, but reliance on several mechanisms and connected protocols creates additional dependencies.

SPOT Cash divides AMPL into senior and junior tranches to create an asset it calls a flatcoin. It does not target a dollar peg, and SPOT Cash states that SPOT is not a stablecoin. The design avoids the usual kind of peg-defense mechanism, but SPOT can become more volatile than a conventional stablecoin. Its only collateral is AMPL, so the protocol also depends on that supply-elastic asset. These are distinct risk profiles, not interchangeable ways to hold dollars.

Neither protocol publishes a complete fee schedule. Frax does not publish figures for minting, redeeming, lending or swapping. Fraxswap and Fraxlend have their own fee structures, and any on-chain action on Ethereum also incurs gas costs. Check the relevant Frax interface or documentation for current charges before transacting.

SPOT Cash also does not publish a fee schedule for SPOT itself. Its described yield comes from Uniswap V3 trading fees earned by liquidity providers in the SPOT/USDC pair; providing liquidity also involves Uniswap pool fees and Ethereum gas. Protocol-level mint or redeem costs and bootstrap reward terms are not published. Since these costs can depend on the action and pool, do not assume either protocol is cheaper based on the information here. Confirm charges in the relevant application before committing funds.

Frax has two audits listed, but the audit providers, scope and dates are not published. Its safety can also depend on AMOs, Fraxlend, Fraxswap and Curve, so risks in connected contracts or oracles could affect the system. Governance can add stability mechanisms, which means the risk profile may change over time. An audit does not eliminate the chance of bugs or a loss of peg.

SPOT Cash has no audits listed. It depends on AMPL, and its TVL is only about $74,000, so liquidity, slippage and exit risk deserve particular attention. SPOT Cash says the system has operated through heavy market conditions, but that claim is not independently verified here. Its lack of a dollar peg also means users should not treat SPOT as equivalent to a dollar stablecoin. Neither protocol removes smart-contract or market risk.

Choose Frax if your priority is an asset designed to trade at one dollar and you are willing to accept a multi-part stability system. It has about $30.1 million in TVL, far more than SPOT Cash, but that does not guarantee liquidity or peg stability. Its product lineup should be checked directly before use, and fees are not published.

Choose SPOT Cash only if you specifically want to explore an AMPL-based flatcoin rather than a dollar-pegged stablecoin, and can tolerate greater volatility and thin liquidity. Its TVL is about $74,000, and no audits are listed. In short, Frax is the clearer fit for a stated dollar target; SPOT Cash is for users who understand that its design makes no such promise. Neither is a risk-free place to store funds.