Every day the news prints something like AUD/KRW = 915. But when you actually send money from Australia to Korea, you often don’t get 915. Sometimes it’s 905, sometimes 897, and sometimes a fee is added on top.
Most people look only at the rate number. But your real transfer cost is set by three things — the mid-market rate, the FX spread, and the fee. Understanding that structure matters far more than predicting the rate.
The short version
- The rate in the news is the mid-market rate.
- The rate you actually get reflects the spread.
- A good rate can matter more than a low fee.
- Splitting transfers and managing cost beats predicting the rate.
- The bigger the amount, the more a 1–2% gap becomes real money.
What is the mid-market rate?
It’s the midpoint between the buy and sell prices in the FX market. If a bank buys at 913 and sells at 917, the midpoint is 915. The rate you see in the news is usually this one — but individuals almost never convert at it.
Why is the actual transfer rate different?
Financial institutions apply a margin on FX. That’s the spread.
| Item | Rate |
|---|---|
| Mid-market | 915 |
| Applied rate | 905 |
| Difference | 10 |
A 10-won gap looks trivial — but on A$100,000, 915 gives ₩91.5m and 905 gives ₩90.5m, a ₩1,000,000 difference.
The real cost is three things
Many people only compare the transfer fee. But the real cost is spread + transfer fee + intermediary cost combined.
| Item | Cost |
|---|---|
| FX loss | 0.8% |
| Transfer fee | $10 |
| Intermediary bank | $20 |
| Total | ~1.0% |
The larger the amount, the more the FX difference dominates.
Bank vs fintech
Traditional banks offer stability, branch service, and existing relationships. Newer fintech services emphasise lower spreads, faster transfers, and live rates. For regular transfers, student living costs, and moving investment funds, the cost difference compounds.
Should you wait to time the rate?
Almost everyone asks: “Should I wait for 900?” “Send when it hits 950?” Honestly — timing the rate is nearly impossible. AUD/KRW is driven by Australian rates, Korean rates, commodity prices, China’s economy, the US dollar, and global risk appetite. Predicting short-term moves as an individual is very hard.
What’s actually practical
- 1. Split the transfer — e.g. spread it over three months to reduce timing risk.
- 2. Set target rates — e.g. send part above 920, more above 940. It removes emotional decisions.
- 3. Check the cost structure first — a 1% spread can outweigh a 3-won move in the rate.
Cases by amount
- Case 1 — tuition (A$5,000): convenience matters more than the rate.
- Case 2 — Korean property funds (A$300,000): a 1% gap ≈ ₩2.7m. Weigh both rate and spread.
- Case 3 — funds for a return (A$1,000,000): a 1% gap ≈ ₩9m. FX management becomes a major part of moving assets.
What drives AUD–KRW over the long run?
Three things largely set it — Australian interest rates (higher can mean a stronger AUD), commodity prices (Australia is a resource exporter, so iron ore and coal matter), and global risk appetite (a risk-on mood often lifts the AUD).
In closing
People see the rate as a number — 915, 920, 930. But what matters in an actual transfer is “how much do I finally receive?”
The mid-market rate, the spread, and the fee — understanding those three matters far more than forecasting the rate.
See → Buying Korean shares from Australia (IBKR) (includes FX in practice)