📋 Table of Contents
What Are Stablecoins?
A stablecoin is a cryptocurrency designed to maintain a stable value — typically pegged 1:1 to the US dollar. Unlike Bitcoin or Ethereum, which can swing 10-20% in a day, stablecoins hold their value. One USDT or USDC is always worth approximately $1.
They were created to solve a real problem: crypto is volatile, but moving in and out of fiat currency is slow and costly. Stablecoins give traders and investors a way to hold dollar-equivalent value on a blockchain — ready to deploy instantly without ever leaving the crypto ecosystem.
Today, stablecoins are used for:
- Trading — parking profits between trades without converting to fiat
- DeFi — lending, borrowing and earning yield in decentralised protocols
- Cross-border payments — sending dollars globally for under $1 in fees
- Hedging — reducing exposure to crypto volatility during bear markets
- Remittances — transferring value to family in countries with weak currencies
I use stablecoins primarily to park profits after selling crypto positions, and to hold dry powder ready for buying opportunities during market dips. I keep a portion in USDC on Kraken (for EU compliance) and use USDT for active trading on Binance where liquidity matters. I never hold large amounts on exchanges long-term — anything significant goes to a hardware wallet.
Types of Stablecoins
Not all stablecoins work the same way. There are three main types:
- Fiat-backed — backed 1:1 by real USD held in bank accounts or Treasury bills. Most transparent and stable. Examples: USDT, USDC.
- Crypto-backed — backed by other cryptocurrencies, over-collateralised to absorb volatility. More decentralised but complex. Example: DAI.
- Algorithmic — use algorithms to maintain the peg without collateral. Higher risk — Terra/LUNA collapsed spectacularly in 2022, wiping out $60 billion. No algorithmic stablecoin has fully recovered trust since.
Quick Comparison: USDT vs USDC vs DAI
| Factor | USDT (Tether) | USDC (Circle) | DAI (MakerDAO) |
|---|---|---|---|
| Market Cap | ~$140B — largest | ~$75B | ~$5B |
| Launched | 2014 | 2018 | 2017 |
| Backing | US Treasuries + cash | Cash + US Treasuries | Crypto collateral |
| Reserve Audits | Quarterly (BDO Italia) | Monthly (Big 4) | On-chain visible |
| EU MiCA Compliant | No — delisted in EU | Yes | Partial |
| US GENIUS Act | Separate US token planned | Fully compliant | DeFi — unclear |
| Best For | Active trading, liquidity | EU users, institutions | DeFi, self-custody |
| Risk Level | Medium (regulatory) | Low | Medium (de-peg) |
USDT (Tether) — The Liquidity King
USDT is the world's largest stablecoin and has been since 2014. Its dominance comes from first-mover advantage — it was integrated into virtually every exchange before USDC even existed. Today it maintains the deepest liquidity pools across hundreds of exchanges globally.
However, USDT has a controversial history. In 2021, Tether was fined $18.5 million by the New York Attorney General after investigations found the company had held no reserves to back some tokens in circulation. Tether has since significantly increased transparency, publishing quarterly reserve reports.
The EU MiCA problem: Under EU MiCA regulation (effective June 2024), stablecoin issuers must hold an EU Electronic Money Institution licence. Tether chose not to pursue this. The consequences were swift — Coinbase Europe delisted USDT in December 2024, Binance removed USDT spot pairs for EEA users by March 2025, and Kraken followed. After July 1, 2026, no EU-regulated exchange can legally offer USDT trading.
Bottom line: USDT remains the best choice for active trading on global (non-EU) exchanges due to unmatched liquidity. It is not suitable for long-term storage or use on EU-regulated platforms.
USDC (USD Coin) — The Regulated Choice
USDC is issued by Circle and has grown 72% year-over-year to $75 billion in market cap as of 2026. It is the only top-ten stablecoin with full MiCA authorisation in the EU, making it the default choice for European crypto users and institutions.
USDC publishes monthly reserve reports audited by a Big Four accounting firm — significantly more transparent than USDT. Its reserves are held primarily in cash and short-term US Treasuries at regulated financial institutions.
In 2023, USDC temporarily de-pegged to $0.87 when Circle revealed $3.3 billion of its reserves were held at Silicon Valley Bank, which collapsed. USDC recovered to $1 within days as Circle confirmed full coverage, but the incident highlighted that even the most regulated stablecoins carry risks.
Bottom line: USDC is the best choice for European users, institutions, and anyone prioritising regulatory safety and reserve transparency over maximum liquidity.
DAI — The Decentralised Option
DAI is unique — it's not issued by a company but by a decentralised protocol (MakerDAO). Users mint DAI by locking up crypto collateral, and the system automatically maintains the $1 peg through over-collateralisation and algorithmic stabilisation mechanisms.
The advantage: no company can freeze your DAI, no regulator can deauthorise the issuer. It's the most censorship-resistant stablecoin. The disadvantage: it's complex, has lower liquidity than USDT/USDC, and carries smart contract risk. Its peg has also been less stable historically.
Bottom line: DAI is for crypto-native users who prioritise decentralisation and DeFi integration. Not recommended for beginners or for primary stablecoin storage.
EU MiCA: What European Users Must Know
If you're in the EU (including Czech Republic, Slovakia, Germany, France etc.), the MiCA regulation fundamentally changes your stablecoin options:
- USDT trading is being phased out on all EU-regulated exchanges by July 1, 2026. You can still hold USDT in a private wallet, but you cannot trade it on Binance, Kraken, Coinbase or other EU-regulated platforms.
- USDC is fully MiCA-compliant and remains freely tradeable across all EU exchanges. It is the practical replacement for USDT in Europe.
- Yield on stablecoins may be taxable — check our EU Crypto Tax Guide for your country's specific rules.
Risks of Holding Stablecoins
1. De-pegging Risk
Both USDT and USDC have lost their $1 peg during market crises — USDC to $0.87 during the SVB collapse, USDT to $0.95 during the Terra/LUNA crisis. Both recovered, but the risk is real, especially during extreme market stress.
2. Exchange Risk
Holding stablecoins on an exchange means you're exposed to that exchange's counterparty risk. FTX held $billions in user stablecoins that were lost in the collapse. Always move significant holdings to a hardware wallet or a non-custodial wallet.
3. Regulatory Risk
As USDT's EU delisting shows, regulation can restrict your access to a stablecoin overnight. Diversify across USDT and USDC to reduce single-issuer exposure.
4. Yield Tax Risk
Earning yield on stablecoins (via exchange staking or DeFi protocols) is taxable income in most European countries. Keep records of all yield received.
I never hold more than I can afford to lose on any single exchange. For larger stablecoin positions, I use a hardware wallet. I split between USDT (for trading liquidity) and USDC (as my primary store of stable value). I stopped holding DAI after the SVB incident showed even "safe" stablecoins can surprise you. Diversification across issuers is the single most important risk management step for stablecoin holders.
How to Use Stablecoins Safely
- Choose the right stablecoin for your use case: USDT for active trading, USDC for long-term holding and EU compliance
- Don't leave large amounts on exchanges: Move holdings above a few thousand dollars to a hardware wallet
- Diversify issuers: Don't put everything in USDT or everything in USDC — split between the two
- Use the cheapest network: Sending USDT on Tron (TRC-20) costs ~$1. On Ethereum (ERC-20) it can cost $5-20. Always check network fees before sending
- Track yield for tax: Any interest or yield earned on stablecoins is likely taxable income in your country
- Check exchange compliance: If you're in the EU, verify your exchange is MiCA-compliant and that your stablecoin of choice is supported