How to Find the Best Exchange Rate for International Transfers — Send More with the Same Money

Why Does the Exchange Rate Matter So Much?

When sending money overseas, most people only look at one thing: the transfer fee. If a service advertises "zero fees," it's easy to assume that's the cheapest option and move on.

But the number that actually determines how much your recipient gets isn't the fee — it's the exchange rate.

Even if you're sending the same ₩1,000,000, the amount of foreign currency that arrives on the other end changes depending on the rate applied. A provider with zero fees but an unfavorable exchange rate can quietly cost you more than one that charges an upfront fee but gives you a better rate.

How Are Exchange Rates Determined?

To understand why rates vary, it helps to know how the system works.

In Korea, exchange rates fall into two main categories: the mid-market rate (매매기준율) and the customer rate (대고객매매율). The mid-market rate is the reference rate published each morning by the Seoul Money Brokerage (SMB), calculated as a weighted average of the previous day's trades. When the news says "the dollar is at ₩1,350 today," that's the mid-market rate.

But the rate you actually get at a bank or transfer service is never the mid-market rate. You get the customer rate, which includes something called a spread — the gap between the mid-market rate and the rate you're offered. In plain terms, the spread is the margin that banks and transfer companies build into the exchange rate as their profit on the transaction.

How Banks Handle Exchange Rates

When you send money through a bank, the rate applied is called the telegraphic transfer selling rate — essentially the mid-market rate plus the bank's spread.

At KB Kookmin Bank, for example, the spread on US dollars is roughly 1%. So if the mid-market rate is ₩1,450, the rate you'd actually pay is around ₩1,464.50.

Banks do offer preferential rate discounts based on your customer tier or transaction history. When a bank says "50% exchange rate discount," it means they're cutting the spread in half. A 1% spread with a 50% discount becomes an effective spread of 0.5%.

Woori Bank offers up to 50% off on online international transfers, and Kakao Bank applies a 50% preferential rate on major currencies like USD, JPY, and EUR for overseas account transfers.

How Fintech Transfer Services Handle Exchange Rates

Licensed fintech remittance providers — the apps most people use for smaller transfers — work a bit differently.

Most non-bank fintech transfer services don't charge receiving fees or intermediary bank fees. The amount shown on the confirmation screen is what the recipient actually gets. The total cost is determined by two things: the transfer fee (either a flat amount or a percentage) plus the exchange rate, which has the provider's margin baked in.

Here's the key point: while the transfer fee is openly stated, the exchange rate markup is embedded in the rate itself and not disclosed separately.

That means even a provider advertising "₩0 fees" may still have a margin hidden inside the exchange rate. This is exactly why comparing fees alone doesn't tell you which provider is actually cheaper.

Why Does Every Provider Offer a Different Rate?

Even at the same moment, for the same amount, every provider will show you a different exchange rate. Why?

It comes down to the fact that each provider has different networks, partnerships, and cost structures. Some providers offer better rates on larger amounts. Others are more competitive on smaller transfers. The combination of transfer fees and exchange rates varies widely — which is precisely why comparison matters.

Why Is Comparing Exchange Rates So Difficult?

In theory, you'd just check every provider's rate and pick the best one. In practice, it's far from simple.

First, exchange rates change in real time. Even Kakao Bank's transfer page explicitly states that rates fluctuate continuously and the rate at the time of your application may differ from the rate at the time of the actual transfer. If rates shift while you're checking providers one by one, your comparison is already outdated.

Second, providers display their pricing differently. Some show the transfer fee and exchange rate as separate line items. Others just show you the final amount the recipient will get. Trying to do the math across different formats takes real effort.

Third, the best provider changes depending on how much you send. The cheapest option for ₩100,000 might not be the cheapest for ₩1,000,000. The ranking reshuffles at every amount level.

The Most Reliable Method: Compare What the Recipient Gets

Trying to compare exchange rates and fees separately is complicated. The most straightforward approach is to compare the actual amount the recipient will receive.

If you're sending ₩1,000,000 and Provider A delivers 25,500,000 VND while Provider B delivers 25,700,000 VND — regardless of what the exchange rate or fee breakdown looks like — Provider B is the better deal. Period.

That's exactly the comparison method RemitBuddy uses. RemitBuddy pulls real-time exchange rates and fees from 9 licensed transfer providers and displays them on a single screen, ranked by the amount the recipient actually receives.

How to Compare Exchange Rates with RemitBuddy

It takes four steps:

The results show real-time rates and fees from 9 providers as of the moment you pressed the button. You can see at a glance how much the recipient would get through each one.

RemitBuddy charges nothing for the comparison. It's 100% free.

Why RemitBuddy Only Compares Licensed Fintech Providers

Every provider listed on RemitBuddy holds a small-scale overseas remittance license — an authorization granted by Korea's Ministry of Economy and Finance to companies that meet specific regulatory requirements.

The per-transaction limit for small-scale overseas remittance is the equivalent of USD 5,000 (roughly ₩5,000,000). That's why RemitBuddy's comparison range is set between ₩10,000 and ₩5,000,000.

For transfers under ₩5,000,000, licensed fintech providers are generally more cost-effective than banks in terms of both fees and exchange rates. Most fintech services don't charge intermediary or receiving fees, so the amount displayed on screen is what arrives — no surprises.

Three Principles for Finding the Best Exchange Rate

First, don't just look at the transfer fee. A ₩0 fee means nothing if the exchange rate has a fat margin built in.

Second, compare based on the amount the recipient receives. Instead of trying to calculate exchange rates and fees separately, just look at the bottom line — the final number that arrives.

Third, compare every single time. Exchange rates fluctuate constantly, and providers update their terms regularly. The best option last time isn't guaranteed to be the best option this time.

With RemitBuddy, you can follow all three principles in 3 seconds.