ACH vs wire transfer: What Malaysian businesses need to know (2026 guide)

Key Takeaways:

• ACH is a US-only domestic payment network, while wire transfers, known in Malaysia as telegraphic transfers (TT), move money internationally through SWIFT.

• Malaysian businesses only encounter ACH when dealing with US clients, platforms, or suppliers. It's never used for domestic ringgit payments.

• Airwallex gives Malaysian businesses a USD Global Account with real US routing details, so you can receive ACH payments and send low-cost international wires from one account.

When comparing ACH vs wire transfers, the first thing to know is that these are US payment systems, not Malaysian ones.

Malaysian businesses use local payment rails such as DuitNow and IBG for domestic transfers. You'll typically only encounter ACH and wire transfers when you're sending or receiving USD, such as getting paid by US customers, collecting funds from US marketplaces, or paying US suppliers.

This guide explains how ACH and wire transfers differ, when Malaysian businesses are likely to use each one, and how to send and receive USD without opening a US bank account.

ACH vs wire transfer: Quick comparison

Here's a quick look at how ACH and wire transfers compare:

The information in this table has been reviewed to be accurate as of 28 July 2026.

We’ll explore these in further detail in the rest of the article.

What is an ACH transfer?

An ACH transfer is an electronic bank transfer that moves through the Automated Clearing House (ACH) network, the main system used to move money between bank accounts in the US.

ACH payments are processed in batches rather than individually, making them a common choice for everyday transactions such as payroll deposits, bill payments, subscription charges, and supplier payments.

In 2025, the ACH network processed 35.2 billion payments worth US$93 trillion.¹

ACH is a US-only payment network. Malaysian banks don't participate in the ACH system, so it isn't used for domestic transfers.

Instead, Malaysia has its own payment rails: DuitNow for real-time payments and IBG (Interbank GIRO) for batch-based bank transfers. Both are designed for MYR payments within Malaysia.

As a Malaysian business, you're most likely to encounter ACH when dealing with the US, such as receiving payments from US customers, collecting payouts from US marketplaces, or paying US suppliers. If you'd like to learn more, see our guide to ACH transfers in Malaysia.

What is a wire transfer?

A wire transfer is an electronic payment sent directly between banks, processed individually rather than in batches. In Malaysia, banks usually call this a telegraphic transfer, or TT. It's the same mechanism, just different terminology.

International wire transfers travel through SWIFT, the messaging network that connects thousands of banks worldwide.⁴

When you send a TT from a Malaysian bank to pay an overseas supplier, or receive one from an international client, SWIFT is almost always the network carrying it.

Because each wire is processed on its own rather than bundled with others, it settles faster than ACH but costs more. That's also why Malaysian banks apply a flat cable fee on top of the exchange rate you're given.

For a full breakdown of TT fees at Malaysian banks and how to reduce them, see our guide to wire transfers.

4 key differences between ACH and wire transfers

ACH and wire transfers may seem similar, but they're built for different types of payments. Here's what Malaysian businesses should know about how they compare:

1. Speed

ACH payments are designed for domestic US transfers. Standard ACH payments typically settle within one to two business days, while Same-Day ACH can process eligible payments within hours, provided they're submitted before the daily cut-off.¹

Wire transfers are generally faster for high-value or time-sensitive payments. Domestic US wires are typically completed within 24 hours, while international wire transfers usually take one to five business days.³

If you're sending money from Malaysia to the US, your payment will normally be sent as an international wire transfer over the SWIFT network. That means it won't be as fast as a domestic ACH payment between two US bank accounts.

2. Cost

ACH transfers are generally free or inexpensive because they're processed through the domestic US banking system. Nacha doesn't set a standard fee, so the amount charged depends on the bank or payment provider.¹

Wire transfers typically cost more. Banks often charge an outgoing transfer fee, and international payments may also incur intermediary bank fees and FX costs. For example, CIMB charges from RM10 for an outgoing telegraphic transfer made through online banking, with different fees depending on the currency and payment channel.⁵

In many cases, the FX markup applied to the exchange rate can be a larger cost than the transfer fee itself.

3. Reversibility

ACH payments include defined procedures for correcting certain errors. For example, an incorrect payment can be reversed within specified timeframes under Nacha's operating rules.²

Wire transfers are different. Once the receiving bank has processed the payment, it is generally irrevocable. Recovering funds usually depends on the cooperation of the receiving bank and the recipient.⁴

4. Geographic reach

ACH is a US-only payment network. It cannot send funds directly to Malaysian bank accounts, so you'll only use ACH when receiving or making payments through US banking infrastructure.

Wire transfers have much broader reach. Using the SWIFT network, they can send funds to banks in most countries and in a wide range of currencies. That's why Malaysian banks use wire transfers (telegraphic transfers) rather than ACH for international payments.

When should a Malaysian business use ACH vs a wire transfer?

The best option depends on whether you're sending or receiving money, who you're paying, and how quickly the payment needs to arrive.

For receiving USD, ACH is often the more convenient option because many US businesses, marketplaces, and payment platforms already use it for domestic payouts.

If you have a USD account with US routing details, you can receive those payments without the sender needing to arrange an international wire.

For sending money from Malaysia, the situation is different. Malaysian banks don't connect directly to the ACH network, so payments to US suppliers or contractors are typically sent as international wire transfers over SWIFT.

If speed is your priority, wire transfers are generally the better choice. If you're receiving recurring payments from the US, ACH is often the lower-cost option where it's available.

Why Malaysian businesses use Airwallex for USD payments

For most Malaysian businesses, the goal isn't to choose between ACH and wire transfers. It's to have the most efficient way to receive and send USD payments. That’s where Airwallex comes in.

Airwallex gives you access to the payment rails you need through a single multi-currency account, so you can collect USD, make international payments, and manage foreign currencies without opening a US bank account. Here’s what you can do with Airwallex:

Receive ACH payments with US account details

Airwallex provides Malaysian businesses with a USD Global Account that includes US account and routing details.

That means US customers, marketplaces, and platforms can pay you via ACH, just as they would any other US bank account. You don't need to open a US bank account or set up a US entity to receive those payments.

Send international payments efficiently

Need to pay your overseas suppliers or contractors? Airwallex routes 94% of its transfers via local payment rails with $0 SWIFT fees. 93% of transfers settle on the same day, and 45% settle immediately.

Hold, convert, and spend USD from one account

Instead of converting USD into MYR as soon as it's received, you can hold USD in your multi-currency account and decide when to convert it.

If you have USD-denominated expenses, such as paying US suppliers or software subscriptions, you can use your USD balance directly instead of converting funds back and forth between currencies. This helps you save on FX fees.

Frequently asked questions (FAQs)

Is ACH the same as a wire transfer?

No. Both move money electronically between banks, but ACH batches payments together on the US-only Automated Clearing House network, while a wire transfer processes each payment individually and can reach banks internationally through SWIFT. ACH is generally slower and cheaper; a wire transfer is faster but costs more.

Which is faster, ACH or a wire transfer?

A wire transfer is faster. Domestic wires are usually processed within 24 hours, while standard ACH payments take one to two business days to settle.¹ ² Same-Day ACH narrows that gap for eligible US payments, but it's still not as fast as a same-day domestic wire.

Can a Malaysian business receive ACH payments?

Not directly through a Malaysian bank account, since ACH only reaches US bank accounts. Airwallex gives Malaysian businesses a USD Global Account with a real US routing number, so you can receive ACH payments from US clients or platforms without opening a US bank account.

Is a wire transfer the same as a telegraphic transfer in Malaysia?

Yes. Malaysian banks use "telegraphic transfer," or TT, to describe what's internationally known as a wire transfer. Both refer to the same electronic payment sent through the SWIFT network.

Which is cheaper, ACH or a wire transfer?

ACH is usually cheaper. It's typically free or low-cost for domestic US payments, while wire transfers carry a flat fee that can range up to US$50, plus any FX markup on international transfers.² For Malaysian businesses sending a telegraphic transfer, the FX markup on the exchange rate is often the bigger cost than the transfer fee itself.

Can an ACH or wire transfer be reversed?

ACH is easier to reverse. Credit entries can typically be corrected within five banking days of settlement if there's an error, such as a duplicate payment or wrong amount.³ A wire transfer, once it clears, is generally treated as final, and recovering misdirected funds depends on the receiving bank's cooperation.⁴

Sources:

1. nacha.org/content/ach-payments-fact-sheet

2. chase.com/personal/banking/education/basics/how-to-wire-money

3. nacha.org/rules/reversals-and-enforcement

4. jpmorgan.com/insights/treasury/payables-disbursements/wire-transfers-how-they-work-security-and-fees

5. cimb.com.my/en/personal/help-support/rates-charges/profit-rates-charges/fees-and-charges/remittance.html