Koruna at its Strongest Level Since December 2025: Cheaper Holidays, Pressure on Exporters, and a Test of Investors' Patience

Imagine two screens side by side. On one, you're planning a summer holiday, and suddenly the hotel in euros is a few hundred cheaper. On the other, you're watching a Czech export company selling to the eurozone, and the same movement of the koruna is biting into its koruna revenues.

This is precisely the moment when the exchange rate stops being an abstract number at the bottom of a financial website. According to today's reports from various financial media, the koruna is at its strongest since December 2025, and the dollar is simultaneously under pressure due to weaker perceptions of the American fiscal situation. For the average person, this sounds like a currency technicality. But for wallets, companies, and portfolios, it's a very practical matter.

What Actually Happened

When it is said that the koruna has strengthened, it simply means that fewer korunas are needed for one euro or dollar than before. If the EUR/CZK exchange rate drops, for example, from 25.00 to 24.50, the koruna is strengthening. For the same 1,000 euros, one no longer needs 25,000 CZK but 24,500 CZK. A difference of 500 CZK doesn't seem dramatic until we talk about company invoices, family holidays, or a portfolio in foreign assets.

Today's story has two layers. The first is domestic: the koruna is strong against the euro, the currency of our most important trading area. The second is global: the dollar remains under pressure because investors are watching the U.S. budget, debt, and political willingness to keep fiscal matters under control. When the market starts to doubt the sustainability of public finances, it doesn't necessarily mean a dramatic currency fall. Often, it's enough for some investors to start demanding higher yields, move some capital elsewhere, or reduce their willingness to hold dollar assets without currency hedging.

For the Czech Republic, the koruna exchange rate is a sensitive indicator. We are a small open economy. The export of goods and services has long been in the high tens of percent of GDP, and the industry is heavily linked to Germany and the eurozone. Therefore, the EUR/CZK exchange rate is not just a topic for bank dealers. It is a variable in the price lists of car manufacturers, engineering companies, e-shops, travel agencies, and investors who hold American stocks through a koruna account.

Why a Strong Koruna Is Not Just Good News

A stronger koruna has a pleasant face. Imported goods can be cheaper. Trips abroad cost less. Electronics, fuel, clothing, or inputs purchased in euros and dollars may have less inflationary pressure. If a company buys materials abroad and sells domestically, a stronger koruna can help.

But the other face is less photogenic. An exporter who sells a product for 1 million euros receives about 25 million CZK at an exchange rate of 25.00. At an exchange rate of 24.50, it's 24.5 million CZK. The difference is half a million korunas on one invoice. If a company has costs mainly in korunas, the exchange rate movement can quickly reflect in margins.

Therefore, with a strong koruna, it's always worth asking: who has revenues in foreign currency and costs in korunas? And conversely: who has costs in foreign currency and revenues in korunas? The first group may feel pressure. The second may gain relief.

For investors, it's similar. A Czech investor holding an unhedged dollar fund doesn't just earn or lose on stocks. The result in korunas is also affected by the USD/CZK exchange rate. The American index may be positive in dollars, but if the dollar weakens against the koruna, the koruna result can be significantly weaker. It also works the other way around: a weaker koruna can temporarily improve the koruna yield of a foreign investment, even if the asset itself stagnates in foreign currency.

Data Block: How Big a Deal Is a Movement of a Few Dozen Hellers

With exchange rates, it's dangerous to look only at the absolute number. A movement from 25.00 to 24.50 looks like 50 hellers, but it's about 2%. For large amounts, that's a lot.

Indicative impact of a 1% change in the EUR/CZK exchange rate:

* An invoice of 10,000 euros means a difference of approximately 2,400 to 2,500 CZK,
* An invoice of 1 million euros means a difference of approximately 240,000 to 250,000 CZK,
* A family holiday for 3,000 euros becomes cheaper by about 700 to 800 CZK with a 1% strengthening of the koruna,
* A foreign portfolio worth 1 million CZK has a koruna difference of around 10,000 CZK with a 1% currency movement, even before accounting for the movement of the assets themselves.

Historically, the koruna can be calm for weeks and then quickly change its mood. After the end of the CNB's exchange rate commitment in 2017, the rate gradually moved away from the 27 EUR/CZK level. In the pandemic stress of 2020, the koruna briefly weakened significantly because investors often flee smaller currencies to more liquid havens in a crisis. In years with higher inflation and higher rates, the Czech currency often benefited from more attractive interest on koruna assets. The long-term average exchange rate of the koruna to the euro has been around 25.50 CZK/EUR over the past ten years. Current values below 24.80 CZK/EUR thus represent significant deviations from this average.

Importantly, the currency is not an isolated planet. The koruna reacts to the interest rate differential between the Czech Republic and the eurozone, expectations of CNB and European Central Bank actions, the condition of the industry, current account developments, global risk appetite, and sometimes even politics. When a weaker dollar is added due to concerns about the U.S. fiscal situation, a cocktail is created in which the Czech currency can move even without a single dramatic domestic news.

The Psychology of the Exchange Rate: Why the Currency Confuses Us

The exchange rate is peculiar in that every movement pleases someone and annoys someone else. A weaker koruna annoys a tourist in Italy but can help an exporter. A stronger koruna pleases an importer, but an accountant in an export company adds an Excel headache to their morning coffee.

Investors often make one mental mistake: they look at a foreign asset in its home currency and forget that their living costs are in korunas. An American stock, ETF, or bond doesn't return directly to a Czech wallet. It goes through a currency translation on the way. And that can be the difference between a great and an average feeling in some years.

Another mistake is extrapolation. When the koruna strengthens for several weeks, the brain tends to say: this will continue. But currency markets can turn not because the world has changed overnight, but because expectations have changed. All it takes is a different tone from the central bank, weaker industrial data, higher risk aversion, or a new budget drama in a major economy.

Practical Framework: What to Watch Today if the Koruna Strengthens

A strong koruna is not a signal in itself. It is an input into decision-making. Practically, it pays to divide the impact into four baskets.

1. Household and Consumption

For planned payments in euros or dollars, it makes sense to perceive the exchange rate as a discount or surcharge. If a family is paying for a holiday, tuition, a foreign service, or a larger purchase, a movement of 2 to 3% can already correspond to several dinners by the sea. It's not about speculating on the perfect exchange rate. Rather, it's about being aware that the currency has a real impact on the final price.

A simple exercise: take the three largest planned expenses in foreign currency in the next 12 months and calculate the price at three exchange rates. For example, 24.30, 24.80, and 25.30 EUR/CZK. The difference will show whether it makes sense to actively address the exchange rate or if it's just noise.

2. Companies and Employment

If you work in a company connected to exports, a strong koruna may appear indirectly: in pressure on prices, margins, budgets, or bonuses. Not every company is equally sensitive. Some use currency hedging, others have part of their costs also in euros, and others can raise prices.

A practical question for company analysis: what proportion of revenues is generated abroad and what proportion of costs is in korunas? The greater the mismatch, the greater the exchange rate risk.

3. Stocks and Sectors

A strong koruna generally puts more pressure on exporters with koruna costs. Conversely, it can help companies importing inputs or goods if they can retain part of the exchange rate improvement in the margin. For banks and utilities, the impact is often more indirect and more dependent on rates, regulation, and the economic cycle.

In QMA: for Czech and European titles, it makes sense to look at valuation alongside the geography of revenues, margin stability, and debt; QMA helps filter this through scores and sector overview in the top selection open in QMA.

4. Foreign Portfolio

For foreign investments, it is crucial to distinguish between the performance of the asset and the performance of the currency. If an investor has American stocks without currency hedging, the koruna result consists of two parts: the dollar movement of the asset and the USD/CZK movement. For European assets, it is similar against the euro.

A practical table on paper:

* what percentage of the portfolio is in CZK,
* how much in EUR,
* how much in USD,
* how much is currency hedged,
* how much of the expenses in everyday life actually arise in foreign currency.

This simple map often shows more than ten comments about where the exchange rate will go next week.

And What About the Dollar Under Pressure from the U.S. Fiscal Situation

The dollar has a special position. It is the main reserve currency, the key currency of world trade, and at the same time the currency of a country with a very scrutinized budget. When investors address the U.S. deficit and debt, it's not just a political debate. It's a question of how many bonds the U.S. government has to issue, at what yield the market is willing to hold them, and how it will affect the dollar.

A weaker dollar can reduce the koruna value of dollar assets for a Czech investor. It can also make commodities priced in dollars cheaper if this effect is not overridden by other factors. For companies importing goods or inputs in dollars, it is potentially a relief. For companies invoicing in dollars, on the other hand, it is pressure.

Even here, it's not about a simple slogan of good or bad. A weaker dollar can be a headwind for one portfolio and a tailwind for another. The structure decides.

Three Signals That Are More Valuable Than the Headline Itself

The first signal is interest rates. If the market expects the CNB to cut rates faster than the ECB, it can weaken the koruna. If Czech rates remain relatively attractive, it can help the koruna.

The second signal is the condition of the eurozone economy, especially Germany. The Czech economy is so closely linked to German industry that weaker orders from neighbors can eventually reflect in domestic sentiment.

The third signal is global risk appetite. The koruna is the currency of a small open economy. In calm times, it can benefit from yield and stability. In nervous times, investors often prefer larger and more liquid currencies.

What to Take Away

1. Separate the exchange rate from emotions. A strong koruna is not automatically a win or a problem. For every expense, company, or investment, it depends on whether it has revenues and costs in korunas, euros, or dollars.

1. Calculate your own currency sensitivity. Test the impact of a 1%, 3%, and 5% exchange rate movement on the three largest foreign expenses and the portfolio. It often turns out that the currency is a bigger item than it seems.

1. For companies, monitor the geography of revenues and hedging. An exporter without natural or financial hedging may react more sensitively to a strong koruna than a company that has costs and revenues in the same currency.

1. For foreign investments, evaluate the result in your home currency. A dollar or euro chart is only half the story. For a Czech investor, it also matters what the koruna does with the result.

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Sources and Further Reading

This topic was followed by various financial media today. Factual basis and links for further reading:

• Google News · kurzy.cz
• Google News · ČNB/CZ ekonomika

*🤖 Original text QMA Brain — we summarize and supplement the topic in our own words, we do not quote or take over the text of sources.