What Is a Safe Haven Currency?

What is a safe haven currency? It is a currency that tends to rise when investors get scared, while stocks fall and the currencies tied to growth fall with them. The usual three are the Japanese yen, the Swiss franc and the US dollar.

A haven flow ignores your analysis. A pair can have every fundamental pointing one way and still move hard the other way for a week, simply because the world got frightened and one side of it is a haven.

Why these three

All three have deep markets, stable politics and institutions people trust. Each also has a reason of its own.

• Japan owns a lot abroad. At the end of 2025 its assets abroad exceeded its liabilities by about ¥562 trillion (Ministry of Finance). When fear hits, part of that money comes home and has to be turned back into yen. On top of that, the yen is a funding currency, so a panic also forces carry traders to buy it back. See Japanese Yen Fundamentals (JPY).
• Switzerland keeps its money sound. The SNB counts inflation below 2 percent a year as price stability (SNB), so holding francs has long meant holding money that keeps its value. See Swiss Franc Fundamentals (CHF).
• The world runs on dollars. The dollar made up 56.7 percent of the world’s foreign exchange reserves in the second quarter of 2026 (IMF COFER). So much debt and trade is settled in dollars that in a real crisis everyone needs them at once. See US Dollar Fundamentals (USD).

A haven can become a problem for its own country

Haven money does not care whether the economy receiving it wants it. In the summer of 2011 the franc rose so far that the SNB called it a “massive overvaluation” and an acute threat to the Swiss economy. On 6 September 2011 it set a floor of CHF 1.20 per euro and said it would buy foreign currency “in unlimited quantities” to defend it (SNB press release).

So a haven’s own central bank can stand in the way of the flow. The SNB held that floor until 15 January 2015 (SNB press release).

March 2020: the havens split

Newcomers assume the three havens rise together. March 2020 is the best lesson that they don’t.

As the pandemic hit markets, the yen and franc went up first. On 9 March a dollar bought 102.52 yen and 0.93 francs. Then the scramble for dollars took over. By 23 March the same dollar bought 111.36 yen (FRED) and close to 0.98 francs (FRED). The Fed’s broad dollar index rose about 8 percent between 3 and 23 March (FRED).

The strain was serious enough that on 19 March the Fed opened dollar swap lines with nine more central banks, to ease strains in global dollar funding markets (Federal Reserve).

Which haven wins depends on the shock

A global squeeze for dollar funding favours the dollar, as March 2020 showed. A broad sell-off at a time of heavy carry positioning tends to favour the yen, because the buy-back adds to the fear. When the stress starts in the US itself, the yen and the franc can do better than the dollar, and the dollar can fall.

Count the scares, though, and the yen comes out as the most reliable of the three. Take the 54 weeks since 2006 in which the St. Louis Fed’s Financial Stress Index rose most, the top 5 percent of all weeks (St. Louis Fed). Against the basket of currencies in the Fed’s broad dollar index, the yen rose in 45 of them, the franc in 38 and the dollar in 34. The yen did best of the three in 32 of those weeks, the franc in 14 and the dollar in 8, two of them the worst weeks of March 2020.

The franc’s worst week in that list was the one in which the SNB set its floor in September 2011: stress rose, and the franc fell about 9 percent against the basket. Each week runs Friday to Friday on the Fed’s broad dollar index and its H.10 rates for the yen and the franc (FRED), with the yen and the franc set against the same basket by crossing the two.

So watch which haven leads. It tells you what the market is actually afraid of. On the other side of these moves you will usually find the commodity currencies.

Reading the crowd

How heavily speculators are positioned in each haven shows in the CFTC’s weekly Traders in Financial Futures report (CFTC), on the Japanese yen COT report, the Swiss franc COT report and the US dollar (Dollar Index) COT report. How to read it is in What Is COT? The Commitments of Traders Report. A haven that speculators have sold heavily has more fuel for a jump when fear arrives.

In normal times these currencies are priced on rates like any other, and the gaps on Interest rate differential by currency pair and Real interest rates by currency do most of the work. In a panic those gaps can stop mattering for days. When the yen and the franc rise together while stocks fall, take it seriously even if your pair looks unrelated.