How to Buy Ethereum & Crypto with ACH

ACH transfers give US-based crypto buyers a direct route from a checking or savings account to Ethereum. CEX.IO supports ACH for eligible U.S. customers through a secure Plaid connection, so you can fund your USD account and purchase ETH on a regulated platform.

You can use ACH two ways on CEX.IO. The first option deposits USD into your account, and you then place an ETH order from your funds. The second option uses Instant Buy, which pulls USD from your linked bank and delivers ETH in a single flow, with no trading interface required.

Both routes apply the same settlement rules: you can trade ETH right after purchase, while withdrawal access opens once the ACH transfer fully clears.

What is an ACH transfer?

An ACH transfer is an electronic bank-to-bank payment that moves US dollars through the Automated Clearing House network. The network handles payroll deposits, tax refunds, recurring bills, and peer-to-peer payments across U.S. banks every business day.

ACH uses your bank routing number and account number to send funds directly. There are no card networks involved, so card processing fees and chargeback risks do not apply. This keeps ACH costs lower than most card payments.

ACH transfers settle in batches. Your bank groups your payment with other transfers, sends them to the ACH network for verification, and the receiving bank credits the funds once settlement completes. Standard ACH settlement takes three to five (3–5) business days.

How ACH transfers work for crypto purchases

A crypto-related ACH transfer follows the same rails as any other ACH payment. You authorize a transfer from your US bank account to a regulated crypto platform, the platform queues your order, and your ETH or other digital asset becomes available once funds arrive.

Some platforms grant immediate trading access on the deposited amount while the transfer settles in the background. CEX.IO uses this approach, so your USD funds are usable for ETH purchases right after the deposit, with withdrawal access following once settlement completes.

How to buy Ethereum with ACH on CEX.IO

The full process takes four steps. Each step assumes you live in a U.S. state where CEX.IO operates and you have a US checking or savings account in your name.

Step 1: Create a CEX.IO Account

Open the CEX.IO sign-up page on the website or in the CEX.IO App and provide:

• Your email address
• A strong password
• Your country of residence (United States)

After you create the account, complete identity verification. You upload a valid government-issued ID, enter your personal details, and pass a quick selfie check. Verification usually finishes in a few minutes and unlocks ACH support, Instant Buy, and access to more than 300 vetted digital assets.

CEX.IO requires identity verification because it operates as a registered U.S. money services business. Verified accounts can use ACH bank transfers, link a card, or pay through Google Pay, Apple Pay, or PayPal (PayPal availability is limited to U.S. customers).

Step 2: Access Instant Buy / Add Funds

Sign in to your verified CEX.IO account. Open the Wallet tab from your dashboard, then click Add Funds in the top-right corner.

On the Add Funds screen, select USD as the fiat currency. CEX.IO will display the payment methods available to you. Bank Account (ACH) appears in this list once your account meets U.S. eligibility requirements.

If you want to skip the deposit step and buy ETH directly, click Buy Cryptocurrency from the dashboard, select ETH, enter your USD amount, and choose Buy Crypto Instantly. The system routes you to the same Add Funds page, where you select Bank Account (ACH) as your payment method.

H3: Step 3: Choose ACH and link your US bank account

Selecting Bank Account (ACH) opens a Plaid connection screen. Plaid is the bank-linking provider that secures the connection between CEX.IO and your bank.

Follow these prompts:

1. Review the security disclosure. Plaid encrypts your bank credentials end-to-end, and CEX.IO does not store your online banking login.
2. Click Continue, then select your bank from the list.
3. Sign in to your bank using your standard online banking credentials.
4. Approve the connection.
5. Wait for the confirmation screen showing your bank account is linked to CEX.IO.

Your linked bank account stays available for future ACH deposits and direct ETH purchases. You only need to link once.

If your bank does not appear in the Plaid list, you may need to use a manually connected payment method. Customer support can help with eligible alternatives.

Eligibility note: ACH on CEX.IO supports U.S. customers in supported states. Availability tracks our state-level money transmitter licenses. The current state list lives on our Legal & Security – U.S. Operations page.

H3: Step 4: Receive ETH in your wallet

After you confirm the ACH transaction, CEX.IO credits the ETH amount to your CEX.IO Wallet immediately. Your Total Balance updates right away, and you can use that ETH for trading on Spot Trading or for conversion through CEX.IO Convert.

ACH settlement runs in parallel with this delivery. While the bank network processes your transfer, two states apply to your purchased ETH:

• Available to Trade — active immediately, so you can place spot orders or convert ETH into another supported asset.
• Available for Withdrawal — opens once the ACH transfer settles, typically after three to five (3–5) business days.

Once the settlement clears, CEX.IO removes the temporary withdrawal hold, and you can move your ETH to an external wallet at any time.

ACH Fees, Limits, and Processing Times

ACH gives U.S. crypto buyers some of the lowest costs on the market. The trade-off is settlement time. Use the table below to weigh ACH against other digital payment methods supported on CEX.IO.

Payment method comparison

For exact fee values per asset, region, and verification tier, consult the CEX.IO Limits and Commissions page. Fees update from time to time, and the Limits and Commissions page always shows the current rates.

ACH limits

ACH purchase and deposit limits depend on your verification level and account history. Verified U.S. customers see significantly higher daily and monthly ceilings than unverified accounts. CEX.IO publishes the active limits inside your Wallet, so you can review your remaining capacity before you start a transfer.

ACH processing times explained

ACH settlement takes three to five (3–5) business days. The clock counts U.S. business days only, so weekends and federal holidays push your effective timeline.

A few examples make the timing concrete:

• An ACH initiated on Monday typically settles by Thursday or Friday of the same week.
• An ACH initiated on Friday afternoon does not start processing until Monday morning, so settlement may run into the following Wednesday or Thursday.
• An ACH initiated on a federal holiday eve can extend by an additional day.

CEX.IO grants you immediate trading and conversion access on the deposited amount during this window. The withdrawal hold lifts once full settlement confirms. This timing applies because U.S. ACH rails operate on standard banking schedules; they do not run 24/7 like card networks.

If your bank rejects an ACH transfer for insufficient funds or another reason, the deposit fails and CEX.IO reverses any temporary balance update.

Why use CEX.IO to buy Ethereum with ACH?

CEX.IO has served crypto users since 2013. Eligible U.S. customers who buy ETH with ACH on CEX.IO get:

• Direct bank-to-platform funding. ACH avoids card network fees and chargeback overhead, which lowers your total cost per ETH purchase.
• Plaid-secured bank linking. Plaid encrypts the connection and never shares your bank login with CEX.IO.
• Immediate trading access. Your USD funds become tradable as soon as the deposit appears, so you can place spot or convert orders during settlement.
• 300+ supported digital assets. After your ETH purchase, you can trade or convert into other vetted assets on the same account.
• 24/7 customer support. Live agents help with ACH linking, settlement questions, and account-level issues.
• Transparent pricing. The Limits and Commissions page lists every applicable fee, so there are no hidden charges at checkout.

About CEX.IO & Trust Signals

CEX.IO operates under U.S. federal and state-level financial regulations:

• FinCEN registration: CEX.IO is registered as a Money Services Business with the U.S. Financial Crimes Enforcement Network — MSB Registration Number 31000061475486.
• State-level money transmitter licenses: CEX.IO holds money transmitter licenses under NMLS ID 1804170, with active authorization across 36 U.S. states plus the District of Columbia.
• AML and KYC compliance: Identity verification, ongoing transaction monitoring, and sanctions screening apply to every U.S. account.
• Account security: Two-factor authentication, withdrawal whitelists, device verification, and Plaid-protected bank linking all work together to safeguard your funds.

For the full list of authorized states, license details, and U.S. legal disclosures, visit the CEX.IO Legal & Security – U.S. page.

These licenses give U.S. customers a regulated path to buy Ethereum with ACH, with the same compliance protections that apply to other regulated U.S. financial services.

Alternative payment methods to ACH on CEX.IO

If you want a faster alternative to ACH or you live outside a supported U.S. state, CEX.IO supports several digital payment methods. The table earlier in this page covers fees and speed; the descriptions below explain when each method works best for U.S. ETH buyers.

• Visa & Mastercard cards — credit and debit cards deliver ETH instantly. Card fees run higher than ACH, so cards make sense when you need same-minute execution.
• Apple Pay — works on iPhone, iPad, and Mac through Safari. Apple Pay routes through your linked card, so card fees apply.
• Google Pay — works on Android devices and supported browsers. Same fee model as Apple Pay.
• PayPal — available to U.S. customers only. PayPal lets you fund ETH purchases from a PayPal balance or a card or bank account linked inside PayPal.
• Skrill — supported in eligible regions. Useful when card or PayPal options are unavailable.

For SEPA, SWIFT, and Faster Payments, CEX.IO supports bank transfers for customers outside the United States. ACH applies only to U.S. residents.

Detailed per-method fee schedules live on the Limits and Commissions page.