Key Takeaways:
The interbank exchange rate is the wholesale rate at which banks trade currencies with each other. It is also called the mid-market rate, and it is the rate you see on Google, not the rate your bank offers you.
In Malaysia, Bank Negara Malaysia (BNM) publishes the KL USD/MYR reference rate daily at 3:30 pm. Use this as a benchmark if you’re making large conversions.
Airwallex gives Malaysian businesses rates at 0.4%–0.6% above the interbank rate, significantly closer to the real market price than what banks offer. Our customers save up to 80% on FX fees as compared to traditional banks.
What is the interbank exchange rate? In a nutshell, it’s the number you see when you search "USD to MYR" on Google. It looks like the rate you should be getting, but it’s not.
This guide explains what the interbank rate is, how it is set in Malaysia, and how to use it as a practical benchmarking tool.
For the formulas you need to calculate and audit exchange rates yourself, see our guide on how to calculate an exchange rate.
What is the interbank exchange rate?
The interbank exchange rate is the price at which banks and large financial institutions buy and sell currencies with each other. It is the wholesale rate, and the closest thing there is to the "true" price of a currency at any given moment.
The interbank exchange rate is also called the mid-market rate and the “real” exchange rate. These terms are often used interchangeably, and they all refer to the same thing: the midpoint between the price a bank will pay to buy a currency and the price it will charge to sell it.
Here are the terms to keep in mind:
Bid — the price a bank will pay to buy a currency
Ask — the price a bank will charge to sell a currency
Interbank (mid-market) rate — the midpoint between the two
If the bid on USD/MYR is 4.40 and the ask is 4.44, the interbank (mid-market) rate is 4.42. When you search "USD to MYR" on Google or check XE.com, the interbank rate is the number that you see.
Note that the interbank rate changes continuously during trading hours as supply and demand for each currency shifts. It is not set by any single authority — it emerges from the volume of trades happening across global FX markets at every moment.
Interbank rate vs interest rate
One important clarification before we go further: the interbank exchange rate is not an interest rate. Malaysian readers sometimes confuse it with KLIBOR (Kuala Lumpur Interbank Offered Rate), but they’re not the same thing.
We cover exactly what sets them apart in a dedicated section below.
How is the interbank exchange rate set?
The interbank rate is not set by any single authority. It emerges from the constant flow of currency trades happening between banks and financial institutions around the clock.
The global forex market
The foreign exchange (forex) market is the world's largest financial market by volume. Banks trade currencies directly with each other or through electronic trading platforms in real time. Every trade reflects the current supply and demand for each currency pair — and the price that clears those trades at any moment becomes the interbank rate.
Because trading happens across time zones continuously, the rate shifts throughout the day in response to economic data releases, central bank decisions, geopolitical events, and market sentiment.
Malaysia's Kuala Lumpur interbank FX market
In Malaysia, Bank Negara Malaysia (BNM) oversees the Kuala Lumpur interbank FX market, where licensed commercial banks trade currencies as market makers. BNM publishes rates drawn from this market at three points each trading day:
9:00 am, 12:00 pm, and 5:00 pm — interbank buying and selling rates¹
11:30 am — best counter rates offered by selected commercial banks¹
3:30 pm — the KL USD/MYR reference rate, computed as the weighted average of interbank USD/MYR spot transactions by domestic financial institutions that day²
The 3:30 pm reference rate is the most useful daily benchmark for Malaysian businesses making large USD/MYR conversions. It reflects actual transactions, not indicative quotes.
What is KLIBOR? Is it the same as the interbank FX rate?
The interbank rate and KLIBOR are frequently confused, but they measure completely different things. Here’s a quick overview:
Term | Full name | What it measures |
|---|---|---|
Interbank FX rate | KL interbank foreign exchange rate | The price of one currency in terms of another (e.g. USD/MYR) |
KLIBOR | Kuala Lumpur Interbank Offered Rate | The interest rate at which Malaysian banks lend short-term ringgit funds to each other |
The interbank FX rate is a currency price. It tells you how much ringgit you need to buy one US dollar. It changes every second during trading hours.
KLIBOR is a borrowing cost. It tells you how much it costs a bank to borrow ringgit for one, three, or six months. It is used as a reference rate for ringgit-denominated loans and financial instruments, not for currency conversion.
If you are trying to benchmark your FX costs or understand the rate on an international transfer, KLIBOR is not relevant. In this case, the KL interbank FX rate is what you need.
What factors move the interbank exchange rate?
Several forces push the interbank rate up or down throughout the trading day.
For a broader overview of what affects the Ringgit generally, see our guide on how to calculate an exchange rate. Here, we focus on how specific forces feed directly into the interbank rate mechanism.
US dollar dominance in USD/MYR pricing
The USD/MYR pair is the most actively traded Ringgit pair in the KL interbank market.
This means the interbank rate for most Malaysian businesses is heavily influenced by dollar dynamics — US Federal Reserve interest rate decisions, US inflation data, and US employment figures all move the dollar, which moves the Ringgit rate in the opposite direction.
A stronger dollar means a weaker Ringgit interbank rate, and vice versa.
How global risk sentiment hits the interbank rate
When global investors move into safe-haven assets during periods of uncertainty, they sell emerging market currencies — including the Ringgit — in large volumes. These sell-offs happen in the interbank market first, before they are reflected in the rates banks offer businesses.
The interbank rate can move significantly within a single trading session during high-volatility events, which is why the BNM 3:30 pm reference rate on a volatile day may look very different from the 9:00 am rate.
The Ringgit's non-internationalised status and interbank liquidity
Because the Ringgit cannot be freely settled offshore, all significant USD/MYR price discovery happens within the KL interbank market.
This concentrates liquidity onshore — which is generally stabilising — but it also means that during periods of low trading volume or high demand, the bid-ask spread in the interbank market itself can widen.
Businesses executing very large conversions may find the rate moves against them mid-transaction for this reason.
Want to stop losing money on exchange rate markups? Airwallex offers FX rates at 0.4%–0.6% above the interbank rate, saving you up to 80% on FX fees as compared to traditional banks. Open a free account.
How banks calculate what they charge you
When a Malaysian business asks their bank to convert ringgit, the bank uses the interbank rate as its cost base and adds a spread on top before quoting you a rate.
That spread is the bank's margin. It is not shown as a fee. It is simply built into the rate you receive, which means the cost is invisible unless you calculate it yourself.
Here’s an example:
Interbank rate on the day: USD/MYR 4.42
Rate your bank quotes you: USD/MYR 4.51
Difference: 0.09, or roughly 2% above the interbank rate
On a RM200,000 transfer, that is RM4,000 that your bank charges you, without showing it as a separate line item
To see exactly what rate was applied to any completed transfer, divide the foreign currency amount you received by the ringgit you paid. Compare that figure to BNM's published rate on the same day — the gap is your FX cost.
For a full walkthrough with worked examples, see our guide on how to calculate an exchange rate.
How to get closer to the interbank rate (and pay less in FX fees)
The further your provider's rate is from the interbank rate, the more margin they earn — and the more you lose on FX fees. For businesses, the goal is straightforward: get as close to the interbank rate as possible. That’s where Airwallex comes in.
Here's what you get with Airwallex:
Transparent pricing before you convert
Banks show you a combined rate and ask you to accept it. Airwallex shows you the rate, the markup above the interbank rate, and the amount you will receive — before you confirm. Everything is listed transparently, and there are no surprises in the settlement.
Rates at 0.4%–0.6% above interbank
Airwallex FX rates are priced at 0.4%–0.6% above the interbank rate. With these highly competitive rates, you save up to 80% on FX fees compared to traditional banks.
Pay in 200+ countries, mostly via local rails
Airwallex routes payments through local payment rails instead of SWIFT wherever possible. 94% of our transfers go through these local rails, which translate into $0 SWIFT fees and faster settlement.
Frequently asked questions (FAQs)
What is the interbank exchange rate in simple terms?
It is the wholesale rate at which banks trade currencies with each other. It is the closest thing to the "true" price of a currency at any moment — and it is the rate you see on Google or XE.com, not the rate your bank gives you.
Is the interbank rate the same as the mid-market rate?
Yes. The two terms refer to the same thing — the midpoint between the bid and ask price in the interbank market. You will see both used interchangeably by banks, fintechs, and financial data platforms.
Why can't I get the interbank exchange rate from my bank?
The interbank market is reserved for licensed financial institutions trading at very high volumes. When your bank converts currency for you, they add a spread above the interbank rate — that spread is their margin on the transaction.
Where can I check the interbank exchange rate for RM?
BNM publishes interbank rates at 9:00 am, 12:00 pm, and 5:00 pm daily at bnm.gov.my/exchange-rates.¹ Google and XE.com also show the mid-market rate in real time.
How do I know if I'm getting a good FX rate?
Compare the rate your provider quotes you against BNM's published rate on the same day. The smaller the gap, the less you are paying in FX costs. Airwallex prices at 0.4%–0.6% above the interbank rate, saving you up to 80% on FX fees as compared to traditional banks.
Sources:
bnm.gov.my/exchange-rates
financialmarkets.bnm.gov.my
This publication does not constitute legal, tax, or professional advice from Airwallex nor substitute seeking such advice, and makes no express or implied representations / warranties / guarantees regarding content accuracy, completeness, or currency. If you would like to request an update, feel free to contact us at [[email protected]]. Airwallex (Malaysia) Sdn. Bhd., a company incorporated under the laws of Malaysia with company registration number 201801007747 (1269761-X), is regulated as a licensed remittance business under the Money Services Business Act 2011 (Licence number 00743 with an expiry date of 3 August 2028, an E-Money Issuer and a registered merchant acquirer under the Financial Services Act 2013.)
Cherie Foo
Growth Content Manager
Cherie is a Growth Content Manager at Airwallex, where she develops content for businesses in Singapore and across Southeast Asia. She focuses on turning complex topics like cross-border payments, business accounts, and spend management into clear, practical guides that help founders and finance teams make confident decisions.
Posted in:
Transfers
