Quick answer
The blue dollar, or dolar blue, is Argentina's informal parallel exchange rate for cash US dollars, which for years paid far more pesos than the official rate. Since most currency controls were lifted in 2025 that gap has largely closed, so check the current rates in the week before you travel rather than acting on older advice.
The blue dollar, or dólar blue, is the informal exchange rate at which cash US dollars have long changed hands in Argentina, outside the banks and outside the official rate. For most of the last fifteen years it paid substantially more pesos than the official rate, and understanding it was the most useful piece of practical knowledge a visitor could carry. That has now changed. This guide covers what the blue dollar is, how the gap opened and then closed, and how to bring money to Argentina today.
In this article
What is the blue dollar?
The blue dollar is a parallel, unofficial exchange rate for US dollar banknotes. It is quoted every day by Argentine newspapers and financial sites alongside the official rate, which is unusual for a black market and tells you how ordinary it became. The word blue is a euphemism: Argentines use it rather than say negro, black, as in black market.
It is a cash rate, applying to physical notes handed over in an exchange house or a shop, not to transfers or card payments. Those have their own rates and their own names: the MEP or bolsa dollar, the CCL, the tourist or card dollar, and others that appeared and vanished as the rules changed.
Why did Argentina have two exchange rates?
Because the government restricted access to the official one. Argentina has used exchange controls, known locally as the cepo cambiario, in several periods, most consistently from 2011 onwards and again from 2019. Under the cepo, individuals could buy only a small monthly quota of dollars at the official rate, and businesses needed permission to pay for imports.
When demand for dollars is high and legal supply is capped, a second price appears. That second price was the blue. At its widest the gap ran to something in the order of 100 percent, meaning a visitor changing money the official way received roughly half as many pesos as someone changing the same notes informally. Years of high inflation kept the pressure on. This is why older travel articles about Argentina are so insistent about carrying cash. In 2022 and 2023 that advice was correct, and the stakes were large.
Does the blue dollar still exist?
It exists, but it no longer does the job it used to do. In April 2025 the Argentine government lifted most of the currency controls, alongside a financing agreement with the IMF, and moved the peso to a managed float within a band instead of a fixed official rate. Individuals were again allowed to buy dollars without the monthly quota.
Once dollars could be bought legally, the reason for a large parallel premium largely disappeared. Through 2026, reporting has consistently placed the official, blue and MEP rates within a few percent of one another, rather than the 50 to 100 percent gaps of earlier years. Informal exchange still happens and the blue is still quoted, but for a visitor it is now a question of small margins and convenience, not a decision worth hundreds of dollars.
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Written by RafaelAcademic Director, Buenos Aires
Argentine currency policy has reversed direction more than once, and it can do so again. Treat the paragraph above as the position at the time of writing, and verify it before you travel.
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See our Buenos Aires schoolHow should I bring money to Argentina?
The honest answer is that no single method is dramatically better than the others any more, which is itself the news. Bring two or three, so that a card outage or a closed exchange house is an inconvenience rather than a crisis.
| Method | Rate you get | Worth knowing |
|---|---|---|
| Foreign credit or debit card | At or near the MEP or tourist rate | Your bank’s foreign transaction fee is added on top. Widely accepted. |
| Cash dollars at a casa de cambio | Close to the blue rate | Bring clean notes. Use a registered office, not the street. |
| Transfer to yourself for cash collection | Competitive, varies month to month | Queues, branch hours and cash availability are the real constraints. |
| ATM withdrawal | Official or near official, plus fees | High fees and low limits. A backup, not a plan. |
| Local payment or QR apps | Varies, occasionally the best available | Needs setting up before you arrive, and not open to every nationality. |
Can I use my credit card in Argentina?
Yes, and it is no longer the expensive mistake it once was. Foreign Visa and Mastercard transactions in Argentina have been settling at or close to the MEP or tourist rate rather than the old official rate, which is what made paying by card sensible again.
Two things to watch. First, your own bank’s foreign transaction fee, commonly between one and three percent, is charged on top and has nothing to do with Argentina. A card that does not charge one is worth taking. Second, the better rate has at times been applied as a later adjustment rather than at the moment of purchase, so a statement can look wrong for a few days before it settles.
Cards work in most Buenos Aires restaurants, supermarkets, shops and app-booked taxis. Small neighbourhood businesses, street markets and the occasional guesthouse still prefer cash.
Is it still worth bringing cash dollars?
Some, yes, but not the thick envelope that older guides recommend. Cash remains useful for rent deposits, informal rentals, tips, markets and anywhere there is no card reader. What it is no longer is a way to beat the system by a wide margin.
If you do bring notes, bring clean, undamaged ones. Argentine exchange houses have historically paid less for marked, torn or older-series bills, and larger denominations sometimes attract a slightly better rate. Change at a registered casa de cambio rather than with someone who approaches you in the street. The street changers on Calle Florida, the arbolitos, are a Buenos Aires fixture, but counterfeit notes and short counts are genuine risks, and the reward for accepting them has shrunk to almost nothing.
What should I check before I travel?
Four things, in the week before you fly rather than months in advance:
- The current gap between the official and blue rates. If it is small, stop optimising and use whatever is convenient.
- What rate foreign cards are receiving, and whether your own bank adds a foreign transaction fee.
- Whether transfer services are paying competitively that month, and whether their branches actually have cash.
- Whether anything has changed politically. Argentine exchange rules can shift inside a single week.
The most reliable source is a person currently living in Argentina, not an article, including this one. If you are booking a course with us, just ask. Our staff in Buenos Aires deal with this every week.
None of this settles what a month in Buenos Aires actually costs, which is a separate question: our guide to the cost of living in Buenos Aires covers the shape of rent, food and transport. If you plan to spend that time learning the language, our Buenos Aires school runs group and private courses all year, and you can find your starting level with the free online level test.
Frequently asked questions
What is the blue dollar rate today?
It is published daily by Argentine financial sites and newspapers, next to the official, MEP and CCL rates. We deliberately do not print a figure here, because any exchange rate quoted in an article about Argentina is wrong within weeks. Check a live source on the day.
Is using the blue dollar illegal?
Exchanging currency outside authorised channels is not permitted under Argentine currency law, although enforcement against tourists changing modest sums has historically been minimal and the practice was open. With the gap now small, the sensible move is to use registered exchange houses, banks and cards, and stop thinking about it.
Is Western Union still worth using in Argentina?
It can be. Sending money to yourself for cash collection was for years one of the best rates available to visitors, and it still sometimes edges ahead. The drawbacks are queues, limited branch hours and occasional cash shortages. Check the rate on the day rather than assuming.
Do I need pesos in cash at all?
Yes, some. Cards cover most of Buenos Aires, but small purchases, markets, tips, some taxis and much of life outside the major cities still run on cash. Carry a working amount and top it up rather than withdrawing large sums at once, because ATM fees are high and limits low.