The Korean won: why it moves, and what it means for you

This guide is for expats living in Korea, foreign workers sending money home, and international visitors trying to make sense of prices. The short answer: the Korean won (KRW) is a freely floating currency whose value is driven above all by chip exports and the US dollar, smoothed at the edges by the Bank of Korea (BOK, Korea’s central bank).

How it works

Korea operates a free-floating exchange rate. That means the won’s value is set by supply and demand in global currency markets, not fixed by government decree. The BOK does not target a specific rate. It does, however, practise what it calls smoothing operations: buying or selling US dollars to slow sudden, sharp moves without reversing the trend. The goal is to reduce volatility, not to peg the won to any level.

Three forces move the won more than anything else.

• Semiconductor exports. Chips are Korea’s single largest export. Semiconductors made up roughly 25 percent of Korea’s total exports in 2024, according to the Seoul Economic Daily. When global demand for memory and AI chips is strong, exporters convert large dollar earnings into won, pushing the won up. When demand falls, the won weakens.
• The US dollar. Like most emerging-market currencies, the won moves inversely to dollar strength. When the US Federal Reserve raises rates or the dollar index climbs, money tends to flow out of Korean assets into dollar-denominated ones, weakening the won. The reverse happens when the dollar softens.
• Korea’s current account. Korea runs a structural current-account surplus (it exports more than it imports). In 2024 the surplus was approximately USD 99 billion, or 5.3 percent of GDP, according to Bank of Korea data. A large surplus means steady dollar inflows that support the won over time.

Why Korea does it this way

Korea moved to a free-floating rate in December 1997, during the Asian financial crisis (a regional economic emergency that forced South Korea to seek an IMF bailout). Before that, the government kept the won in a managed band. The crisis showed that defending an artificial rate against market pressure drains reserves rapidly and ultimately fails. Korea drew the lesson: let the currency absorb external shocks, but intervene to stop disorderly moves.

The BOK also sets the base rate (the benchmark interest rate that affects borrowing costs across the economy). A higher base rate tends to attract foreign capital into Korean bonds, strengthening the won. A lower rate can weaken it. The BOK held its base rate at 2.50 percent from May 2025 through early July 2026. On July 16, 2026, it raised the rate to 2.75 percent, citing inflation above its 2 percent target and strong first-quarter growth, according to the BOK’s official press conference.

The numbers that matter

What it means for you

Foreign workers sending money home

Korea introduced the Overseas Remittance Integrated System (ORIS) in 2026. Under ORIS, foreigners may send up to USD 50,000 per calendar year without submitting source-of-funds documents. The limit is tracked across all banks and remittance services combined — it is a personal annual cap, not a per-bank cap. Sending more than USD 5,000 in a single transfer requires documents showing where the money came from (payslips, tax certificates). Any single transfer above USD 10,000 is automatically reported to the National Tax Service (NTS) and Korea Customs Service. To send above USD 50,000 per year, visit your bank’s foreign exchange desk and ask about the full documentation process; requirements vary by institution.

Practical note: banks and licensed fintech remittance services both operate under ORIS. Compare exchange rates and fees before each transfer — spreads vary. Never let urgency push you into a single large transfer you have not documented; missing paperwork can delay or block the wire.

Expats on local salaries

If you earn in won and spend partly in a foreign currency — school fees, a mortgage at home, travel — a weaker won means your overseas purchasing power drops. Over 2025 the won averaged roughly 1,421 per dollar, its weakest annual level in recent history. As of early September 2026 it has recovered to around 1,352. That 5 percent swing matters: a monthly transfer of USD 2,000 cost about KRW 2.84 million in September 2026 and would have cost roughly KRW 2.90 million at the 2025 average. Build a small buffer into your remittance budget for months when the won weakens.

Visitors and short-term travellers

A weaker won makes Korea cheaper for visitors holding dollars, euros or yen. A stronger won narrows the discount. There is no reliable way to predict short-term moves; converting a portion of travel money on arrival and a portion mid-trip spreads the risk without requiring a forecast. Airport exchange booths typically offer worse rates than bank branches or ATMs inside Korea.

Investors holding Korean assets

Currency moves directly affect the returns foreigners see on Korean stocks or bonds when they convert back to their home currency. This guide does not recommend any investment strategy, but be aware that the won’s recent range — roughly 1,280 to 1,560 per dollar since 2024 — represents meaningful currency risk on top of any asset-level returns. Check the current figure at the Bank of Korea (bok.or.kr) before making decisions.

FAQ

Can I send unlimited money out of Korea as a foreigner?

No. Under the ORIS rules effective in 2026, foreigners have an annual no-documentation limit of USD 50,000 across all channels. Above that you must supply documents and go through a full bank review. There is no absolute ceiling, but larger transfers require more paperwork and take longer to clear.

Does the BOK fix the won at a target rate?

No. Korea uses a free-floating exchange rate. The BOK intervenes only to slow extreme short-term swings — a practice called smoothing operations — not to hold a specific level. The won can and does move several percent in a single month when global conditions shift sharply.

Why did the won weaken so much in late 2024 and 2025?

Several factors overlapped: a stronger US dollar globally, domestic political uncertainty in Korea in late 2024, and concerns about US trade policy affecting Korean exporters. The BOK rolled out temporary foreign exchange relief measures in December 2025 to ease pressure. By mid-2026, a semiconductor export boom and a rate hike had helped the won recover toward early-2024 levels.

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