The cheapest way to fund a crypto account is a bank transfer — ACH in the US, SEPA in Europe. We compare Coinbase, MoonPay, and Transak for deposit fees, processing times, and which payment rail actually saves you money.
Every time you move money into a crypto exchange, you're paying a toll. The question is how much. Card deposits can eat 2–4% before you've bought a single token. Bank transfers — ACH in the US, SEPA in Europe — are almost always free or flat-fee. The trick is picking an exchange that actually lets you use those rails without burying the option.
Here's what we found after digging through fee schedules and deposit policies.
The difference between a card deposit and a bank transfer isn't small. A $1,000 deposit on a credit card at 3.5% costs you $35 before you trade. The same deposit via ACH or SEPA is typically $0–$1.1
| Deposit Method | Typical Fee | Processing Time |
|---|---|---|
| Bank Transfer (ACH / SEPA) | $0 – $1 | 1–3 business days |
| Debit / Credit Card | 2% – 4% | Instant |
| Wire Transfer | $10 – $25 | Same day |
| P2P / Third-party | 0.5% – 2% | Varies |
The pattern is consistent: slower money is cheaper money. If you can wait a day or two, you save.2
Coinbase is the most widely used exchange in the US, and its ACH deposit system is straightforward: link your bank account, transfer funds, and pay $0 in deposit fees for standard ACH.1 Instant card deposits are available but carry a ~1.5% fee. The trade-off is speed — ACH takes 1–3 business days to settle.
Coinbase also supports wire transfers for larger amounts, though those come with bank-side fees. For most people starting with a few hundred to a few thousand dollars, ACH is the right call.
Why it ranks here: It's the default on-ramp for US users, and the zero-fee ACH path is reliable and well-documented.
MoonPay isn't an exchange — it's a payment gateway that wallets and platforms embed to let users buy crypto directly. It supports bank transfers, debit cards, and credit cards across 160+ countries.2
The fee structure depends on the payment method and region. Bank transfers through MoonPay are generally cheaper than card payments, though the exact rate varies by partner integration. Where MoonPay shines is convenience: you don't need to move funds from a separate exchange to a wallet — the deposit and purchase happen in one flow.
Why it ranks here: If you're using a self-custodial wallet or a platform that doesn't have its own fiat on-ramp, MoonPay is the most polished bridge.
Transak is another on-ramp provider, similar to MoonPay but with a stronger focus on emerging markets and alternative payment methods. It supports bank transfers, local payment systems, and even cash top-ups in select regions.2
Transak's bank transfer fees are competitive, and its support for local currencies in Asia, Africa, and Latin America makes it a strong option if you're outside the US/EU bubble. Like MoonPay, it's embedded inside wallets and dApps rather than being a standalone exchange.
Why it ranks here: Broader geographic coverage than most alternatives, especially for non-USD/non-EUR deposits.
| Feature | Coinbase | MoonPay | Transak |
|---|---|---|---|
| Deposit Fee (Bank Transfer) | $0 (ACH) | Varies by region | Varies by region |
| Card Deposit Fee | ~1.5% | 2%–4% | 2%–4% |
| Processing Time | 1–3 days | Instant–1 day | Instant–1 day |
| Geographic Focus | US, EU | 160+ countries | Global, incl. emerging markets |
| Best For | Direct USD/EUR deposits | Wallet integrations | Non-US users |
If you're in the US and want the cheapest deposit, link your bank account to Coinbase and use ACH — it's free and the process is mature. If you're using a wallet or dApp that needs an embedded on-ramp, MoonPay and Transak are both solid, with Transak having an edge for non-Western currencies.
Avoid card deposits unless you need funds instantly. The 2–4% fee is a quiet tax that adds up fast.
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