Fiat-backed and crypto-backed stablecoins: how they differ
Fiat-backed stablecoins hold cash or Treasuries; crypto-backed coins hold crypto collateral. Check the reserve reports and the network before you send.
Vahe HakobyanEditor-in-chief
Updated Oct 6, 20263 min readFact-checked
On this page
- Reserve attestations are snapshots, not full audits.
- Crypto-backed coins carry debt that can be liquidated.
- The IRS treats crypto as property.
This guide explains how fiat-backed and crypto-backed stablecoins differ and what to check first. Both kinds have slipped from the dollar before.
What is the direct difference?
A fiat-backed stablecoin holds cash and short-term Treasuries, usually at a third-party custodian. A crypto-backed stablecoin holds other cryptocurrencies as collateral, and a smart contract tracks the debt against it. As of October 2025, nearly 97% of fiat-backed stablecoins tracked the US dollar.
What should you check before starting?
Look at what stands behind the coin. A fiat-backed issuer publishes reserve attestations, which are snapshots in time, not full audits. A crypto-backed protocol shows its collateral ratio on-chain, so you can compare collateral with debt. Then check the networks and redemption terms, because a transfer on the wrong network can lose the funds.
How do you compare them step by step?
Two questions carry most of the risk. What holds the price, and what happens when it breaks?
- 1Compare the peg mechanismsA fiat peg rests on reserves and redemption. A crypto peg rests on overcollateralization, so the collateral is meant to be worth more than the debt, and that gap can shrink when prices fall.
- 2Weigh a fiat shortfallReserves can fall short of redemptions, and then a fiat-backed coin can trade below its peg.
- 3Weigh crypto liquidationsForced sales of collateral can push prices down and start a liquidation cascade in a crypto-backed coin.
What should you do after comparing?
Keep a record of each swap and redemption. The IRS treats crypto as property, so a swap or a cash-out can create a taxable gain or loss.
Frequently asked questions
Usually not. FDIC insurance covers deposits at insured banks, not the tokens, even when an issuer keeps cash in a bank account.
Many fiat-backed issuers can freeze an address to follow a law or a court order, and some crypto-backed protocols carry pause controls.
Its price moves away from the target. A fiat-backed coin then depends on reserves covering redemptions; a crypto-backed coin depends on collateral.
