Anatomy of an Emerging-Market Currency Crisis: Turkey and Argentina

Turkey and Argentina are the two emerging-market currency crises investors name first. Both financed current-account deficits with short-term foreign money, both let inflation run far above target, and by the end of 2021 both currencies had lost more than two-thirds of their dollar value since the start of 2018. They differ in how their governments responded: Turkey without the IMF, Argentina with the largest programme in the Fund's history. They also differ in what each crisis looked like on a screen, which matters to anyone reading a market dashboard.

This guide covers the shared mechanics, the main episodes in each country, the indicators that moved first, the conditions under which EM stress spreads, and how CrisisBoard's published rules for Turkey, Argentina and the EM aggregate score these events when replayed on historical prices.

The common mechanics

A currency crisis needs two ingredients: a country that has to keep buying foreign currency, and a moment when the people supplying it stop trusting the price. The first is a balance-sheet condition; the second is a credibility event. Most episodes run through the same channels.

• Current-account deficit. A country that spends more abroad than it earns must attract capital every month. Argentina's deficit more than doubled to about US$31 billion in 2017, according to INDEC; Turkey's was roughly 5.5% of GDP that year. When inflows pause, the exchange rate adjusts.
• Short-term and FX-denominated debt. Debt that must be rolled over within a year, or repaid in dollars, turns a depreciation into a solvency problem. Turkish banks and companies borrowed heavily in foreign currency; Argentina leaned on short-dated central-bank peso notes and on dollar bonds.
• Falling reserves. Reserves are what a central bank spends to slow a fall. Headline figures include swaps and borrowed dollars that cannot all be sold, so markets watch net reserves.
• Inflation and credibility. When inflation exceeds the policy rate, holding the currency loses money in real terms. A central bank that cuts into inflation, or a government that moves its own target, tells savers to leave.
• Dollar strength and Fed tightening. Higher US yields raise the return every EM asset must offer, and a stronger dollar raises the burden of dollar debt.
• Pass-through. Where prices are informally indexed to the dollar, depreciation feeds inflation within months, eroding the competitiveness gain and inviting the next round.
• Capital controls and parallel rates. When a government rations dollars, an unofficial exchange rate appears. The official quote stops measuring stress; the gap between the two rates starts to.

Turkey 2018: a credibility gap meets a sanctions headline

The lira's 2018 collapse is usually dated to August, but pressure built for months. Turkey's five-year credit default swap (CDS) traded near 158 basis points at the start of the year (IHS Markit data). In May, with the lira at record lows and President Erdoğan publicly opposing higher rates before the 24 June election, the central bank held an unscheduled meeting on 23 May and raised its late-liquidity rate by 300bp to 16.5%. On 7 June it lifted the policy rate to 17.75%.

The trigger was political. On 1 August the US Treasury sanctioned Turkey's justice and interior ministers over the detention of an American pastor. On 10 August President Trump authorised doubling tariffs on Turkish steel and aluminium, to 50% and 20%. The lira fell as much as 18% that day, the CDS went from 457bp at Friday's close to 575bp on Monday 13 August, and the currency touched a record 7.24 per dollar in Asian trading that morning, more than 40% weaker than at the start of the year. The central bank first offered banks "all the liquidity" they needed and cut reserve requirements, which eased bank funding but, as analysts noted at the time, did nothing directly for the lira. The decisive move came on 13 September: a 625bp increase in the one-week repo rate to 24%, against a median forecast of 425bp. Inflation still peaked at 25.24% in October, and the lira ended 2018 nearly 30% down.

Turkey 2021–2024: cutting into inflation, then reversing

The second episode was self-inflicted. Between September and December 2021 the central bank cut its policy rate from 19% to 14% while annual inflation climbed past 21%. The lira lost 44% of its value in 2021, its worst year in two decades, and hit an all-time low of 18.36 per dollar on 20 December. That evening Erdoğan announced that the state would compensate lira depositors whenever depreciation exceeded the interest their banks paid. The lira rallied more than 20% within hours.

The scheme, known by its Turkish initials KKM, did not remove currency risk; it moved it onto the public balance sheet. Rates went lower still, to 8.5% by early 2023, and inflation peaked at 85.51% in October 2022. The U-turn followed the May 2023 elections. Under a new economic team the central bank raised rates from 8.5% to 15% on 22 June 2023, short of the 21% poll median, and kept going until a surprise hike to 50% on 21 March 2024. Once the authorities stopped defending it, the lira lost almost a quarter of its value in June 2023 alone, and inflation did not peak until May 2024, at 75.45%, eleven months after the first hike.

An aftershock in March 2025 showed how a managed lira behaves. After Istanbul mayor Ekrem İmamoğlu was detained on 19 March, the lira touched a record 42 per dollar intraday before recouping most of the day's loss. The next day the central bank raised its overnight lending rate to 46% at an interim meeting and added liquidity measures. Daily closing prices barely registered the intraday panic, a point that matters below.

Argentina 2018–2019: the largest IMF loan, and the vote that broke it

Argentina's 2018 crisis also began with a credibility loss. On 28 December 2017 the government raised its 2018 inflation target to 15% from a range of 8–12%; by March the central bank's own survey of analysts expected 20.3%. As US yields rose in April, holders of short-term peso debt headed for the exit. The central bank raised its policy rate three times in a week, to 40% on 4 May, and on 8 May President Macri announced he would seek IMF financing.

The IMF board approved a 36-month, US$50 billion Stand-By Arrangement on 20 June 2018, the largest in its history, with US$15 billion available immediately. It did not stop the slide. On 30 August the central bank raised its rate to 60% and the peso still fell more than 13% that day. In October the arrangement was enlarged to about US$56.3 billion. The peso lost roughly half its value in 2018, and inflation reached 47.6%.

The second blow was electoral. In the 11 August 2019 primary, opposition candidate Alberto Fernández beat Macri by 15.5 percentage points, a much wider margin than expected. On 12 August the peso traded as weak as 65 per dollar and closed 15% lower at 53.5; the Merval fell 48% in dollar terms, the second-largest one-day drop of any major index tracked by Bloomberg since 1950. Within three weeks the government announced a "reprofiling" of about US$100 billion of debt (28 August) and capital controls (1 September) capping residents' dollar purchases at US$10,000 a month. The IMF programme went off track that month with four of twelve planned reviews completed; about US$44 billion had been disbursed when Argentina cancelled it in July 2020. Inflation in 2019 was 53.8%.

Controls, the blue rate and the December 2023 devaluation

Controls stop the official rate from moving; they do not stop people wanting dollars. Argentines used two routes. The "blue" dollar is cash bought informally. The contado con liquidación (CCL) is legal: buy in pesos a security that also trades in New York, such as YPF shares, and sell it abroad for dollars; the ratio of the two prices is an implied exchange rate. On 23 October 2020 the blue rate reached 195 pesos per dollar, about 150% above the wholesale rate of 78.

On 12 December 2023, two days after Javier Milei took office, Economy Minister Luis Caputo moved the official rate from 366.5 to 800 pesos per dollar, a 54% devaluation (a 118% rise in the price of a dollar), and set a 2% monthly crawl. Officially it was the steepest devaluation since 2002. In markets almost nothing happened. The blue rate closed at 1,070 pesos both before and after the announcement, and the CCL slipped from about 1,037 to 972. Bloomberg reported that the move "triggered no spillover effect in the country's myriad black markets", that benchmark 2035 dollar bonds hit a two-year high, and that a US-listed Argentina ETF was little changed. The devaluation ratified a price the parallel market had already set.

The cost showed up in consumer prices instead. Monthly inflation was 25.5% in December 2023, the annual rate for 2023 was 211.4%, and the year-on-year rate peaked near 289% in April 2024. In April 2025, backed by a new 48-month, US$20 billion IMF arrangement, Argentina lifted most controls on individuals and let the peso trade in a band of 1,000–1,400 per dollar.

What flashed first, and what only confirmed

Read backwards, the indicators fall into three groups.

1. Policy and credibility signals led. Argentina's target change, and the gap between a 15% target and 20.3% expectations, preceded the run by four months. Turkey's 2021 cuts with inflation above the policy rate preceded the lira's worst weeks. These are not prices, but they are public and dated.
2. Reserves, forwards and sovereign credit came next. Reserve losses are published with short lags (daily in Argentina, weekly in Turkey), and an FX forward premium far above the interest-rate differential means the market expects a bigger move than spot shows. CDS is less reliably early: Turkey's had nearly tripled from its January level by 10 August, then added more than 100bp over the weekend of the collapse, moving with the lira rather than ahead of it.
3. Spot FX, equities and banks confirmed. By the time the lira had dropped 18% in a day or the Merval 48% in dollars, the crisis was already under way. Realised volatility is last to rise and slowest to fade.

The 2019 primary is the exception. Nothing flashed beforehand: on Friday 9 August, the last session before the vote, Grupo Galicia's New York shares rose 9% and YPF's nearly 7% (Yahoo Finance closes). Event risk of this kind arrives as a gap, not a trend, and no rule built on 3- or 5-day changes can lead it.

When EM stress spreads, and when it stays local

Contagion depends on whether the shock is common or local. The 2013 "taper tantrum" was common. After Ben Bernanke told Congress on 22 May 2013 that the Fed could slow its bond purchases, capital flows to emerging markets reversed. The damage concentrated in the "Fragile Five": Brazil, India, Indonesia, Turkey and South Africa. A San Francisco Fed study found that larger current-account deficits and weaker fiscal positions predicted larger depreciations. The shock travelled through US yields more than the dollar: between 22 May and 24 June the 10-year Treasury yield rose about half a point, while the dollar index ended the window about 2% lower.

2018 was the opposite case. A strong dollar, trade tensions and a slowing China pressured EM assets broadly, but the BIS concluded that "the impact differed across countries; some faced crises. But contagion was limited." Turkey and Argentina shared vulnerabilities, not triggers, and investors differentiated. The working rule: stress that starts in US rates, the dollar or global risk appetite tends to spread; stress that starts in one country's politics tends to stay there unless the country is large or shares a creditor base with others. CrisisBoard's contagion map models those transmission paths between regions.

How CrisisBoard's rules read these crises

CrisisBoard sums points from published rules for each region and moves it from NORMAL to MONITOR, PHASE 1 and PHASE 2 at region-specific thresholds; the methodology explains the scoring. Three regions cover these crises. The Turkey region tracks the iShares MSCI Turkey ETF (TUR), Akbank (AKBNK.IS) and USD/TRY, with thresholds of 4, 6 and 8 points. The Argentina region tracks the Global X MSCI Argentina ETF (ARGT), Grupo Galicia (GGAL), IRSA (IRS) and YPF's New York shares as an FX proxy, with thresholds of 8, 10 and 12; it holds no peso quote. The EM aggregate tracks EEM, the EMB and EMHY sovereign-bond ETFs and the UUP dollar fund, with thresholds of 5, 7 and 9.

Replaying those rules on Yahoo Finance daily closes, the data source the live engine uses, gives the readings below. CrisisBoard launched in 2026, so these are reconstructions, not alerts anyone received.

Where the indicators mislead

The practical reading: in Turkey and Argentina the exchange rate is a policy variable as much as a market price. The useful questions are what the authorities are doing to hold it, how far the official rate sits from the market rate, and what is happening to dollar-priced assets that no central bank can manage. For the credit side of the same story, see the guide to credit spreads.