Conclusion first: Both USDT and USDC are pegged to 1 USD. For beginners, USDT is the most convenient for daily use—it has the most trading pairs and the best liquidity; if you want to diversify risks, you can exchange a portion into USDC (strictly regulated in the US, with the most transparent reserves). After downloading the Binance Official App, go to the Binance Official Website to register an account; Apple users refer to the iOS Installation Guide.
Understanding Stablecoins First
Stablecoins are cryptocurrencies pegged to fiat money (mostly the US Dollar), where 1 USDT ≈ 1 USDC ≈ 1 USD. Their significance includes:
- Acting as "cash" in the crypto world.
- Avoiding the price volatility of assets like BTC and ETH.
- Allowing quick currency switching (selling BTC for stablecoins).
- Enabling instant, bank-free on-chain transfers.
The primary stablecoins on Binance are USDT, USDC, and FDUSD.
USDT and USDC Issuers
| Dimension | USDT | USDC |
|---|---|---|
| Issuer | Tether Limited | Circle Internet Financial |
| Headquarters | Hong Kong / BVI | Boston, USA |
| Founded | 2014 | 2018 |
| Total Market Cap | ~150 billion USD | ~60 billion USD |
| Main Regulation | Relatively weak | US SEC, NYDFS |
| Reserve Transparency | Quarterly reports | Monthly audits |
USDT's market cap is 2-3 times that of USDC, making it much larger. However, USDC has consistently been considered superior in terms of transparency and compliance.
Liquidity Differences
Support on the Binance platform:
| Dimension | USDT | USDC |
|---|---|---|
| Trading Pairs | 600+ | 100+ |
| Major Coins Coverage | All | Top 50 |
| Minor Coins Coverage | Almost all | Partial |
| 24h Trading Volume | Massive | Large |
| On-chain Options | Multi-chain support | Multi-chain support |
This means:
- If you want to buy unpopular altcoins: There might only be an XXX/USDT pair and no XXX/USDC pair.
- Major coins (BTC, ETH, BNB): Both are available.
- P2P Fiat Deposits: Both are supported, but there are more USDT merchants.
Security Comparison
Controversial history of USDT:
- 2017: Tether faced allegations of manipulating BTC prices.
- 2021: Fined $41 million by the CFTC for insufficient disclosures.
- Multiple rumors of "insufficient USDT reserves."
- In reality, a large-scale de-pegging has never occurred.
Security events of USDC:
- March 2023: The collapse of Silicon Valley Bank affected $3.3 billion of USDC reserves.
- Briefly de-pegged to $0.87.
- Returned to $1 within 3 days after Circle announced reserve transfers.
Neither is 100% risk-free, but USDC's transparency and compliance make it more favored by institutions.
On-chain Options
Both USDT and USDC are issued on multiple chains. Common chains include:
| Chain | USDT | USDC | Withdrawal Fee (USDT/USDC) |
|---|---|---|---|
| TRC-20 (Tron) | Yes | No (Discontinued) | 1 USDT |
| ERC-20 (Ethereum) | Yes | Yes | 5-10 USDT/USDC |
| BSC (BNB Chain) | Yes | Yes | 0.29 USDT |
| Solana | Yes | Yes | 1 USDT/USDC |
| Polygon | Yes | Yes | 0.8 USDT |
| Arbitrum | Yes | Yes | 0.5-1 |
When beginners withdraw, choosing the wrong chain will result in lost funds. Even if it's USDT, withdrawing from TRC-20 to an ERC-20 address will fail and may be unrecoverable.
Price Volatility Comparison
Theoretically, both are pegged to $1. Actual volatility:
| Coin | Historical Low | Historical High | 99% Time Range |
|---|---|---|---|
| USDT | 0.93 | 1.05 | 0.998-1.002 |
| USDC | 0.87 (SVB event) | 1.005 | 0.999-1.001 |
Under normal circumstances, the difference between the two is less than 0.1%, and arbitrageurs will quickly flatten the spread. Brief de-pegging may occur during extreme events.
Practical Guide: Converting USDT to USDC
Binance offers a USDC/USDT trading pair, with prices almost 1:1, allowing direct swaps:
- Go to the USDC/USDT trading pair (search "USDC").
- Select "Market" → Buy USDC with USDT (or vice versa).
- The transaction executes in seconds and arrives in your spot wallet.
Fees: Standard 0.1%, but Binance frequently offers 0-fee promotions for USDC. Keep an eye on announcements.
When to Use USDT
Scenarios where beginners should prioritize USDT:
| Scenario | Reason |
|---|---|
| Daily spot trading | Most trading pairs available |
| P2P deposits | Most merchants, smallest spreads |
| Withdrawals to TRC-20 wallets | Lowest fees |
| Cross-platform transfers | Supported by almost all exchanges |
| Holding obscure altcoins | Most small coins only pair with USDT |
When to Use USDC
Scenarios where USDC is preferred:
| Scenario | Reason |
|---|---|
| Reserve transparency concerns | Monthly USDC audits |
| Long-term idle funds | Risk diversification |
| Interacting with US institutions | More US regulation-friendly |
| Trading certain major coins (during 0-fee promos) | Saving on fees |
| US-based holders | Better compliance |
0-Fee Promotion Details
Binance often runs 0-fee campaigns for specific USDC trading pairs, such as:
- BTC/USDC permanent 0 maker 0 taker fees.
- ETH/USDC 0 fees.
- BNB/USDC 0 fees.
These are strategies to gain market share. If your trading volume is high, trading major coins with USDC can save you 0.1% in fees.
To view the current 0-fee list: Go to the App "Wallets" → "Fees" → "Spot Fees" → Look for trading pairs with a "0%" tag.
Diversified Allocation Advice
Beginners don't have to choose exclusively; you can allocate:
| Fund Ratio | Allocation | Reason |
|---|---|---|
| 60% | USDT | Main trading funds |
| 25% | USDC | Risk diversification + 0 fees |
| 10% | FDUSD | Pushed by Binance + Airdrop opportunities |
| 5% | USDT in Earn | Earning flexible interest |
There's no need to be rigid. The key is not keeping all your stablecoins with a single issuer.
FAQ
Q: Is USDT safe? Will they rug pull? A: The probability of a short-term rug pull by USDT is very low (the market cap is too large and the impact too widespread). However, in the long term, reserve transparency remains controversial. It's a reasonable hedge for beginners to exchange a portion of their trading funds into USDC.
Q: Is the price of USDT and USDC always exactly $1? A: Generally yes, but occasionally there are deviations of 0.5-2% (USDC dropped to 0.87 during the SVB event). The deviation is less than 0.1% for the vast majority of the time.
Q: Can I buy USDC directly with fiat like RMB? A: Yes. Binance P2P supports USDC pairs, but there are fewer merchants and slightly larger spreads compared to USDT. Beginners are advised to buy USDT first and then swap it for USDC.
Q: Which offers higher Earn yields? A: Binance Flexible Earn for USDT usually offers slightly higher yields than USDC (USDT has higher borrowing demand). The difference is about 0.5-1% APY.
Q: Can I transfer USDT directly to USDC across chains? A: No, you cannot transfer directly. USDT and USDC are two different tokens and are not interoperable on-chain. You must swap them on an exchange.
Q: Will there be more stablecoins in the future? A: Yes. FDUSD (First Digital), PYUSD (PayPal), and TUSD are newer options. Binance is heavily promoting FDUSD and may increase support for it in the future.
Q: Which chain should I choose for USDC withdrawals? A: BSC is the cheapest (0.29 USDC), followed by Polygon and Arbitrum. Unless the recipient specifically requires ERC-20, using BSC is fine.
Q: Which is better, FDUSD or USDC? A: FDUSD is heavily promoted by Binance (holding it grants BNB rewards, trading pairs have 0 fees), but its ecosystem is far inferior to USDC. Use FDUSD for short-term incentive gains, but USDC is more stable for long-term holding.
Beginner Stablecoin Strategy: Use USDT as your main working capital, USDC as a safety cushion, and FDUSD to capture incentive opportunities. Combining all three provides utility and risk mitigation.