From Crypto Exchanges to Everyday Spending With KAST

You’re in a restaurant. The bill arrives. The server asks if you’re paying by card.

If you're money is on a crypto exchange, this is a problem. You can't easily spend it.

With KAST, that's not the case though.

You can open KAST, transfer crypto from your exchange, and pay with your phone. In just a few taps, the bill is settled.

From exchange balance to paid bill in minutes

Here’s how you can move only what you need into KAST to pay the bill. Keep the rest where it is, and choose one of two simple options.

If you already hold stablecoins

Send supported stablecoins to KAST and spend them.

If you hold crypto

Send crypto to KAST Convert and we'll automatically turn it into stablecoins for you.

KAST supported assets

Supported cryptocurrencies

• 20+ cryptocurrencies
• Includes SOL, BTC, ETH, PENGU, UNI, and more

Supported stablecoins

• USDC
• USDT
• USDe
• PYUSD
• RLUSD

Stablecoins matter here because the value stays steady while you pay. That way, you know what you’re spending.

Not sure which stablecoins KAST supports? View the full, up-to-date list in KAST Concierge.

Do it once. Then it’s muscle memory.

Open KAST.

Tap Receive.

Choose what you want to receive:

• Stablecoins: USDC, USDT, USDe, PYUSD, or RLUSD
• Crypto: SOL, BTC, ETH, PENGU, UNI, and 20+ other cryptocurrencies

Choose from one of the supported networks, including Solana, Ethereum, Tron, Polygon, BSC, Arbitrum, Avalanche C-Chain, and TON.

⚠️ Heads up: Make sure you choose the same network in both the app you're sending the tokens from and KAST, otherwise, you risk loss of funds.

Copy the address.

Go to your exchange.

Withdraw to that address.

That’s it.

What happens after you send

If you send stablecoins, they arrive on the network you chose. Once the deposit confirms, you can spend them right away.

If you send crypto, KAST converts it into stablecoins for you. You see the rate before you send, and the conversion happens after the deposit confirms. The rate you see already includes fees.

You don’t need to bridge assets, swap manually, or use a decentralized exchange (DEX). You move funds once, and you’re done.

Common mistakes to avoid

Most deposit mistakes happen for one reason: selecting the wrong network.

Before you send, check the network in both apps. The network you pick in KAST must match the network you select on your crypto exchange. If KAST shows Solana, withdraw on Solana. If KAST shows Ethereum, withdraw on Ethereum. If they don’t match, you risk losing your funds.

Next, confirm the asset. Send the same token KAST shows on the Receive screen.

Also, keep the following in mind:

• Use the fresh address KAST shows you. Don’t reuse old saved addresses.
• Check minimums and limits before you send.
• If a network requires a memo or tag, include it. XRP and Stellar may require this.

KAST shows these checks on the Receive screen. Match the network first, then send.

Why this flow matters

A crypto exchange is built to buy and trade assets, not to help you pay at checkout. A DEX is even further from that world. Card payments require regulated issuers, fiat settlement rails, and compliance systems, so decentralized trading venues generally do not issue cards directly. Some products get marketed as “DEX cards,” but they still route funds through third party card issuers and extra steps, so the setup is not as direct as the label sounds.

Even on the centralized side, many exchanges still don’t give you a clean “spend now” path. If an exchange offers a card, you often need to move funds into a separate card or spending balance first. KAST keeps the flow simple: you transfer funds into KAST, receive money in a spending account, and  pay just as you normally would.

KAST vs other ways to pay from crypto

One last thing

It's best to set up KAST before you need it. That way, when the time comes to check out or pay a bill, you can just swipe your card or tap with Apple Pay and Google Pay.

If you're not on KAST yet, download our app to get started. Here's how:

Download KAST to create your account

1. Download the KAST app from the App Store or Google Play.
2. Open the app and tap Create account.
3. Enter your email, set a password, and confirm your details.
4. Verify your email to finish setup.
5. Log in and complete basic verification if prompted.