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What happens when a currency fails
A currency crisis occurs when a nation's money loses its value so quickly that people and businesses lose faith in it. It isn't just a bad day on the stock market; it's a structural failure where the central bank can no longer support the exchange rate. Today, 1 dollar buys 1,545.69 Argentine pesos, a figure that would have seemed impossible just a decade ago. When a currency collapses, the cost of imported food, fuel, and medicine skyrockets, and life savings can vanish in months.
These crises usually start when a government spends far more than it earns, often printing money to cover the gap. This fuels inflation, which makes the currency even less attractive to hold. Investors pull their money out of the country, and the central bank burns through its foreign reserves — actual dollars or euros held in its vaults — trying to prop up the rate. Once those reserves run out, the currency is allowed to float, or more accurately, to sink. The result is a sharp devaluation that changes the standard of living overnight for millions of people.
Argentina and a decade of devaluation
Argentina is perhaps the world's most famous example of a recurring currency crisis. Our data shows the USD/ARS rate has climbed +10,156.8% over the last 10 years. To put that in perspective, a car that cost 1 million pesos in 2016 would theoretically cost over 100 million pesos today just based on currency movement. The peso hit a record high of 1,550.81 (Nov 4, 2026) on Nov 4, 2026, continuing a trend of near-constant devaluation. For a nurse in Buenos Aires, this means her monthly salary buys less every single week.
The root of the problem is chronic inflation and a lack of trust in the central bank. Argentines have become experts at currency management out of necessity. Many keep their savings in physical US dollars tucked under mattresses or in offshore accounts. The government has tried various fixes, from freezing prices to creating multiple exchange rates for different industries, but the peso's slide has been relentless. In 2023, the average rate was 256.50, but by 2025, it had jumped to an average of 1,231.66 pesos per dollar. It's a vivid example of how inflation and exchange rates move in a destructive cycle.
| Year | Average | High | Low | Change |
|---|---|---|---|---|
| 2015 | 9.2547 | 13.31 | 8.4649 | — |
| 2016 | 14.74 | 16.02 | 12.97 | +59.2% |
| 2017 | 16.55 | 19.16 | 14.70 | +12.3% |
| 2018 | 28.04 | 41.30 | 18.38 | +69.4% |
| 2019 | 48.10 | 60.24 | 36.90 | +71.5% |
| 2020 | 70.52 | 84.15 | 59.56 | +46.6% |
| 2021 | 94.97 | 102.70 | 84.08 | +34.7% |
| 2022 | 130.50 | 177.14 | 102.47 | +37.4% |
| 2023 | 294.21 | 809.51 | 176.45 | +125.5% |
| 2024 | 920.17 | 1,030.83 | 810.02 | +212.8% |
| 2025 | 1,231.66 | 1,490.63 | 1,030.48 | +33.9% |
| 2026 YTD | 1,453.13 | 1,550.81 | 1,354.78 | +18.0% |
Change = yearly average vs. the previous year's average.
Turkey and the unconventional experiment
Turkey's currency crisis is unique because it was driven by an unconventional economic theory. While most central banks raise interest rates to fight inflation, Turkey's leadership did the opposite for several years. The result was a dramatic weakening of the lira. Today, 50.22 lira buys 1 dollar, compared to a yearly average of just 3.0243 back in 2016. Over the last 10 years, the USD/TRY rate has risen +1,462.0%, one of the steepest declines for a major emerging market currency.
For Turkish households, the impact has been a cost-of-living squeeze that hasn't let up. The lira reached its record high of 50.29 (Nov 7, 2026) on Nov 7, 2026. This volatility makes it nearly impossible for businesses to plan for the future. If a shopkeeper imports electronics today for 50,221.25 TRY, they might find that by the time they sell the goods, the cost to restock has risen by 10%. This is why many locals have turned to gold or the US dollar to protect what they have left. Our data shows the lira's annualized volatility over the last year is 1.7%, which suggests a more controlled but steady decline compared to the wild swings of the past.
Nigeria and the shock of unification
Nigeria's naira faced a massive reckoning in 2024 when the government decided to unify its multiple exchange rates. For years, the official rate was kept artificially low, while the real market rate was much higher. When the government let the currency find its own level, the USD/NGN rate exploded. In 2023, the average rate was 632.44, but by 2024, it had more than doubled to an average of 1,504.74. This move was intended to attract foreign investment, but it caused immediate pain for anyone holding naira.
The naira hit a record high of 1,696.41 on Nov 23, 2024. Since then, it has stabilized slightly, with the rate today sitting at 1,345.43. However, the long-term damage is clear: the currency has lost +341.9% of its value against the dollar over the last decade. For Nigerians, this meant that a $100 purchase that cost an average of 16,525 naira in 2014 now requires 134,543.45 NGN. You can read more about this transition in our guide on the Nigerian naira's fall. The lesson here is that artificial pegs often lead to a more violent crash when the central bank finally runs out of money to defend them.
- NGNNigerian naira+6.7%
- RUBRussian ruble−1.8%
- ARSArgentine peso−8.9%
- EGPEgyptian pound−12.7%
- TRYTurkish lira−15.9%
Egypt and the debt trap
Egypt has followed a similar path to Nigeria, struggling with a shortage of foreign currency and a heavy debt load. The Egyptian pound has devalued sharply several times over the last decade. In 2021, the average rate was 15.70 per dollar; today, it is 53.98. The USD/EGP rate has climbed +216.6% over 10 years, with a recent record high of 56.27 (Oct 27, 2026) set on Oct 27, 2026. These shifts are often tied to loans from international lenders who demand that the currency be allowed to trade freely as a condition for financial aid.
When the pound drops, the price of wheat and fuel — which Egypt imports in massive quantities, rises instantly. This creates a direct link between the exchange rate and the price of a loaf of bread. To cope, the government has often raised interest rates to double-digit levels to encourage people to keep their money in pounds, but the lure of the dollar remains strong. A $200 transfer sent to a family in Cairo today would be worth 10,795.80 EGP, providing a vital lifeline in an economy where the local currency's purchasing power is constantly shrinking.
| Currency | Amount | 1-year change |
|---|---|---|
| Argentine peso ARS | 154,569.30 ARS | +9.8% |
| Turkish lira TRY | 5,022.12 TRY | +18.9% |
| Russian ruble RUB | 8,250.43 RUB | +1.8% |
| Egyptian pound EGP | 5,397.90 EGP | +14.5% |
| Nigerian naira NGN | 134,543.45 NGN | −6.2% |
Mid-market rates. Banks and card networks add a margin on top.
Russia and the impact of sanctions
The Russian ruble offers a different kind of crisis story, one driven by geopolitics rather than just economic mismanagement. The ruble saw its most dramatic move in March 2022, when it hit a record high of 137.50 per dollar following the start of the conflict in Ukraine and the resulting global sanctions. Since then, the Russian central bank has used strict capital controls to manage the rate. Today, the rate is 82.50, which is actually a +1.8% change over the last year, showing a level of stability that masks the underlying economic isolation.
Despite this stability, the long-term trend is still one of decline. The ruble has lost +29.4% against the dollar since 2016. For Russians, the crisis isn't just about the rate itself but the inability to easily move money abroad or buy foreign goods. The ruble's volatility remains high at 14.2% over the last 12 months, reflecting the uncertainty of an economy cut off from major global financial systems. It serves as a reminder that sanctions and oil prices are the primary drivers of this specific currency's fate.
How to protect your wealth from a crash
While most people in the US or UK don't have to worry about their currency losing most of its value overnight, these crises offer universal lessons on risk. The first is the importance of diversification. If you have all your assets in one currency, you are entirely dependent on that nation's economic health. People in crisis zones often turn to "hard" assets like gold, real estate, or stable foreign currencies to preserve their wealth. Even a small holding in a safe-haven currency like the Swiss franc can act as insurance against local volatility.
Understanding the warning signs is also vital. A rapid depletion of foreign reserves, a widening gap between official and black-market exchange rates, and inflation that stays consistently above 10% are all red flags. For those living through these shifts, the goal isn't usually to get rich, but to avoid getting poor. By the time a full-blown crisis hits the headlines, it is often too late to move money out. Staying informed about what currency devaluation really means is the first step in building a more resilient financial life.
1 USD = 1,545.69 ARS · mid-market rate · Full USD/ARS converter and history →
Frequently asked questions
What causes a currency to lose its value so quickly?
A rapid loss of value is usually caused by high inflation, large government deficits, and a lack of foreign exchange reserves. When a central bank prints too much money or can no longer defend a fixed exchange rate, investors and citizens sell the currency, causing its value to plummet. In Argentina, this has led to a +10,156.8% increase in the USD/ARS rate over the last decade.
How can individuals protect their savings during a currency crisis?
Individuals often protect their wealth by diversifying into stable assets. This includes buying "hard" currencies like the US dollar or Euro, investing in gold, or purchasing physical property. In countries like Turkey, where the USD/TRY rate has risen +18.9% in just one year, holding foreign currency is a common survival strategy for middle-class families.
What is the difference between devaluation and depreciation?
Depreciation happens naturally in a free-floating market based on supply and demand. Devaluation is a deliberate downward adjustment of a currency's official exchange rate by a government or central bank. Both result in a weaker currency. For example, Nigeria's naira saw a massive drop when the government officially devalued it to match market rates in 2024.
Why does a weak currency cause inflation?
A weak currency makes imports more expensive. If it takes more local money to buy one dollar, then anything bought from abroad, like oil, electronics, or grain, becomes more costly for local consumers. This imported inflation can quickly spread through the economy, as seen in Egypt where the USD/EGP rate has risen +14.5% over the last year.