# What Is USDC and Why Do You Need It to Trade? > Hyperliquid runs on USDC, not dollars. Here is what a stablecoin actually is, why the exchange uses one, how USDC differs from USDT, and how to get some. *Source: https://hyperliquidguide.com/guides/getting-started/what-is-usdc-and-why-do-i-need-it* You cannot put dollars into Hyperliquid. You put in USDC, which is a digital token designed to be worth one dollar. If that sentence raised more questions than it answered, this page is for you. > **Key takeaway:** USDC is a dollar you can send over the internet without a bank. Hyperliquid uses it because there is no company there to accept a bank transfer. One USDC is worth about one dollar, and that is the whole design goal. --- ## Why an Exchange Would Not Take Your Dollars On a normal trading app you wire money to a company, the company credits your account, and a number goes up on a screen. That number is a record of what the company owes you. Hyperliquid has no company in that role. It is [software running on a blockchain](/guides/getting-started/how-hyperliquid-works), and a blockchain has no bank account and no way to receive a wire transfer. It moves tokens between wallets, and that is all it can do. So if you want to trade with dollars in that environment, the dollar itself has to become a token. That is what a stablecoin is: a cryptocurrency deliberately engineered to sit still at one dollar while everything around it moves. --- ## How It Holds a Dollar The mechanism is less exotic than people expect. Circle, the company that issues USDC, takes real dollars and issues one USDC for each of them. Those dollars sit in reserves held as cash and short-term US government securities. Anyone holding USDC can, in principle, redeem it back for a dollar, and Circle publishes regular attestation reports on the reserves backing the supply. That redeemability is what keeps the price at a dollar. If USDC drifted to 98 cents, buying it cheaply and redeeming it at a dollar would be profitable, and that pressure pushes the price back. The peg is maintained by arbitrage rather than by decree. > **Note:** **This is not the same as a dollar in your bank.** A bank deposit is insured by the government up to a limit. USDC is a claim on a private company's reserves. It has held its value reliably, and it briefly traded below a dollar during banking stress in March 2023 before recovering. Small risk, real risk, worth knowing. --- ## USDC vs USDT vs USDH Three names you will run into, so here is the short version. | | Issued by | Where you meet it | |---|---|---| | **USDC** | Circle | Hyperliquid's settlement currency | | **USDT** | Tether | Widely used on other exchanges | | **USDH** | Hyperliquid ecosystem | An aligned stablecoin used in some Hyperliquid markets | For a beginner the decision is made for you. [Hyperliquid settles in USDC](/guides/getting-started/deposit-usdc-to-hyperliquid), so that is what you need. If you have seen a HYPE/USDT pair quoted somewhere, that was a different exchange, and we sorted out that confusion in [$HYPE vs HYPE/USDC](/guides/getting-started/hype-ticker-vs-trading-pair). USDH is a later concern. It offers better fee treatment on markets that use it, and the [USDH stablecoin guide](/ecosystem/usdh-stablecoin-guide) covers it when you get there. **Ready to Fund an Account?** — Sign up through our referral link first and every trade you make costs 4% less, permanently. [Join Hyperliquid](https://app.hyperliquid.xyz/join/Concept211) --- ## How to Actually Get Some There are two realistic routes. **Buy it on a centralized exchange and withdraw.** You open an account somewhere like Coinbase or Kraken, verify your identity, buy USDC with a bank transfer or card, then withdraw it to your own wallet on the **Arbitrum** network. This is the most common path. Watch the network setting on the withdrawal screen, because sending to the wrong network is one of the few genuinely unrecoverable mistakes in crypto. **Buy directly to a wallet.** Some services will sell USDC straight to a wallet address without a full exchange account. Convenient, usually more expensive. Our guide to [buying crypto with fiat](/guides/getting-started/buy-crypto-with-fiat-on-hyperliquid) walks through the options. Either way, the conversion from real money into crypto is where the fees live. Card purchases in particular can cost several percent. That step will almost certainly cost you more than all the trading fees you pay afterwards, which is worth planning around rather than discovering. > **Warning:** **Get the network right.** Hyperliquid deposits arrive over Arbitrum. USDC exists on several networks and they are not interchangeable in transit. Send Arbitrum USDC to an Arbitrum address, check it twice, and send a small test amount first if you are moving anything significant. --- ## What Happens Once It Arrives Your USDC lands in your Hyperliquid balance and becomes the money you trade with. Prices are quoted in it, profits and losses are settled in it, and fees come out of it. From there you can buy an asset on the [spot market](/guides/trading/spot-trading-guide), where you swap USDC for something like HYPE and hold it. Or you can use it as collateral for perpetuals, which is the riskier path and one worth understanding before you take it. When you want out, you [withdraw USDC](/guides/getting-started/withdraw-usdc-from-hyperliquid) back to your wallet for a 1 USDC fee, then convert it back to spendable money wherever you bought it. --- ## The Short Version USDC is a dollar in token form, issued by a company that holds reserves against it. Hyperliquid uses it because a blockchain cannot accept a bank transfer. You buy it somewhere else, send it over Arbitrum, and it becomes your trading balance. It is stable enough to trade against and not the place to keep your savings. **Start With 4% Lower Fees** — Our referral link applies before your first trade and never expires. [Get the Discount](https://app.hyperliquid.xyz/join/Concept211) --- ## Related Reading - [Deposit USDC to Hyperliquid](/guides/getting-started/deposit-usdc-to-hyperliquid), the walkthrough - [Buy crypto with fiat](/guides/getting-started/buy-crypto-with-fiat-on-hyperliquid) for the funding step - [How much money do you need to start?](/guides/getting-started/how-much-money-to-start-on-hyperliquid) - [Hyperliquid glossary](/guides/getting-started/hyperliquid-glossary) for the rest of the vocabulary - [Hyperliquid for Dummies](/guides/getting-started/hyperliquid-for-dummies) if you are starting from scratch