What the 2025 Currency Reforms Changed for Expats

The short version

Argentina’s 2025 currency reforms changed how individuals can access dollars through the formal exchange market. They did not change the U.S. tax rule that a U.S. return is prepared in U.S. dollars.

That distinction matters.

The Central Bank of Argentina, or BCRA, announced Stage 3 of the economic program on April 11, 2025. The announcement put the exchange rate into a band, lifted many foreign-exchange restrictions for individuals, removed the USD 200 cap, and described broader access to the Mercado Libre de Cambios, or MLC.

For an American in Argentina, that can make daily life easier. It can change how dollars are bought, how peso accounts are funded, how rent or school costs are paid, and how a person documents local cash flow.

But it does not make the tax file simpler by itself. The IRS still requires U.S. tax-return amounts to be reported in U.S. dollars. The IRS says a taxpayer generally translates foreign-currency income, expenses, taxes, and similar items using the exchange rate that applies when the item is received, paid, or accrued. The IRS also says it has no official exchange rate and generally accepts a posted exchange rate that is used consistently.

The 2025 reform changed the local currency lane. It did not erase the workpaper.

What changed in April 2025

The BCRA’s April 11, 2025 Stage 3 announcement made three changes that matter to expats.

First, Argentina moved to a floating exchange-rate band. The BCRA described a band between ARS 1,000 per U.S. dollar and ARS 1,400 per U.S. dollar, with the floor moving down by 1 percent per month and the ceiling moving up by 1 percent per month.

Second, the BCRA said foreign-exchange restrictions for natural persons were lifted, including the prior USD 200 cap and several restrictions tied to pandemic assistance, subsidies, public-sector employment, and related limitations.

Third, the BCRA said ARCA would eliminate current tax withholding on purchases of foreign currency in the MLC, except for tourism and credit-card consumption abroad.

Communication A 8226 is the operating document behind the announcement. It states that, effective April 14, 2025, financial institutions may give resident individuals access to the exchange market to buy foreign-currency banknotes for holding or deposits without prior BCRA approval if the transaction meets the listed requirements.

That is the part most expats notice. A formal channel became more usable.

What did not change

The reform did not change these tax facts:

a U.S. citizen or resident alien abroad generally remains subject to U.S. tax on worldwide income;
a U.S. return is prepared in U.S. dollars;
foreign-currency income and expenses still need a conversion method;
foreign accounts can still create FBAR and Form 8938 questions;
Argentina residence still controls whether Argentina asks about Argentine-source income only or worldwide income;
wealth-tax, entity, trust, crypto, and state-exit questions still sit outside the currency reform.

That is why the article should not be read as “Argentina changed the currency rules, so my U.S. file is easy now.”

The better read is: Argentina changed the mechanics, so the recordkeeping file needs to explain which market, rate, account, and date were used.

The two files are separate

There are really two files.

The first file is the Argentina currency file. It asks:

did the person buy or sell dollars through an authorized bank or exchange entity;
did the person use the MLC, a bank account, a card, or another channel;
what exchange rate applied;
what date did the transaction settle;
was the transaction for savings, rent, school, travel, investment, business, or family support;
were any securities-market restrictions relevant.

The second file is the U.S. tax file. It asks:

what income was received;
when it was received, paid, or accrued;
what currency it was denominated in;
what exchange rate supports the U.S. dollar number;
whether the same account is reportable on FBAR or Form 8938;
whether Argentina tax was paid, withheld, credited, refunded, or adjusted.

The currency file can support the tax file. It does not replace it.

The September 2025 reminder

The April reform did not mean every dollar path was unrestricted.

BCRA Communication A 8336, dated September 26, 2025, amended the foreign-exchange text to require a client affidavit committing not to conduct purchases of securities settled in foreign currency from the moment of access and during the following 90 calendar days.

Then the BCRA issued a September 30, 2025 press note saying there was no regulatory change for individuals buying dollars through authorized banks and entities. The same note said foreign-currency transactions can be channeled only through authorized banks and exchange houses and may not be outsourced.

For an expat, the lesson is practical. Do not reduce the reform to “dollars are free now.”

The better file note is: formal bank access became easier in April 2025, but the person still needs to know the channel used, whether a securities-market restriction applies, and whether the transaction went through an authorized entity.

The U.S. exchange-rate rule

The IRS foreign currency page says the U.S. dollar is the functional currency for most taxpayers. If the taxpayer’s functional currency is the U.S. dollar, foreign-currency income, expenses, taxes, and similar items that affect income tax generally must be translated into dollars when received, paid, or accrued.

The IRS yearly average currency page gives the key practical warning: the IRS has no official exchange rate. It generally accepts any posted exchange rate used consistently. When a country uses multiple exchange rates, the taxpayer should use the rate that applies to the specific facts and circumstances.

Argentina is exactly the kind of country where that sentence matters.

The table below is the working distinction:

Item	What changed in Argentina in 2025	What the U.S. file still needs
Individual dollar access	BCRA announced broader formal-market access and removed the USD 200 cap for natural persons.	The taxpayer still needs date, amount, account, rate, and business or personal purpose.
Exchange-rate band	BCRA announced a band beginning at ARS 1,000 to ARS 1,400 per U.S. dollar.	The U.S. return still needs a supportable conversion rate for each tax item.
Tax withholding on purchases	BCRA said ARCA would remove withholding on MLC purchases, except tourism and card consumption abroad.	Withholding changes do not decide U.S. gross income, deductions, credits, FBAR, or Form 8938.
Securities-market restriction	A 8336 added a 90-day commitment tied to purchases of securities settled in foreign currency.	The tax file should not treat bank access and securities activity as the same fact pattern.
Yearly average rate	The IRS yearly average currency page lists Argentina’s 2025 yearly average rate as 1,243.369 pesos per U.S. dollar.	Average rates can help some recurring items, but transaction-specific items may need spot-rate support.

That table is the point. The local currency reform can change the first column. It does not delete the second column.

A simple example

Assume a U.S. consultant lives in Buenos Aires. In 2025 she receives U.S. dollar payments from U.S. clients, pays local rent in pesos, buys dollars through a bank, keeps a local peso account, and uses a U.S. credit card for some travel.

After the April reform, buying dollars formally may be easier than it was before. That can reduce friction.

But her U.S. return still needs U.S. dollar amounts. If she pays rent in pesos, the expense support should show the peso amount, date paid, exchange-rate source, and U.S. dollar equivalent. If she receives Argentine-source income in pesos, the file should show the receipt date, peso amount, applicable rate, and U.S. dollar conversion. If she pays Argentina tax, the foreign tax credit file should show the tax type, date paid or accrued, amount, currency, and whether the tax is creditable for U.S. purposes.

If she uses a yearly average rate for income that is received evenly through the year, the file should say why that method is reasonable. If she sells an asset, pays a major deductible item, receives a lump sum, pays a tax bill, or transfers money through a different channel, the file may need the rate for that specific date and transaction.

Nothing about the April 2025 reform removes that support problem.

The account-reporting problem

Currency reform also does not erase account reporting.

The IRS page for U.S. citizens and resident aliens abroad says U.S. taxpayers who own foreign financial accounts must report those accounts to the U.S. Treasury Department even if the accounts do not generate taxable income. The page also reminds taxpayers that U.S. citizens and resident aliens abroad are subject to U.S. tax on worldwide income.

That means a local bank account can matter even if the person thinks the currency change was the main story.

The questions are separate:

did the account exist;
what was the maximum value;
who owned or controlled it;
whether FBAR applies;
whether Form 8938 applies;
whether the account generated interest, exchange gain, or other income;
whether the account connects to a local tax payment or deduction.

Do not let currency mechanics crowd out account reporting.

The workpaper to build

For a U.S. person in Argentina, the 2025 currency reform should produce a better workpaper, not a looser one.

Build it in four parts.

First, keep a transaction log:

date;
currency;
peso amount;
U.S. dollar amount;
exchange-rate source;
bank or exchange channel;
account used;
purpose;
supporting receipt or statement.

Second, keep an income map:

U.S.-source wages or consulting income;
Argentine-source compensation or business income;
dividends, interest, capital gains, and rental income;
crypto income and transactions;
entity, trust, or retirement distributions.

Third, keep an account and asset list:

Argentine bank accounts;
U.S. bank and brokerage accounts;
third-country accounts;
crypto accounts and wallets;
entity interests;
real estate;
retirement and investment accounts.

Fourth, keep a tax-payment log:

Argentina withholding;
Argentina estimated or final payments;
U.S. withholding;
U.S. estimated payments;
refunds and adjustments;
foreign tax credit support.

That file is not glamorous. It is what lets the return survive contact with two tax systems and several exchange-rate facts.

What this means for you

The 2025 currency reforms changed the practical life of an expat in Argentina. A formal dollar channel can matter a lot when a person is paying rent, tuition, employees, vendors, or family expenses in a country with a history of currency controls.

But the U.S. tax conclusion is narrower.

The reform does not change U.S. worldwide-income reporting. It does not remove FBAR or Form 8938. It does not decide whether Argentina treats you as resident. It does not make a foreign tax credit automatic. It does not let you pick the most favorable exchange rate after the fact.

It changes the transaction facts you need to document.

If you are living in Argentina, the right question is not “which rate makes my return look best?” The right question is “which rate applies to this item, on this date, through this channel, under these facts?”

That is the difference between currency news and tax evidence.

How Sheepdog Tax can help

I am Noah Green, a CPA and Certified Fraud Examiner, and Sheepdog Tax is a veteran-owned practice. I help U.S. taxpayers with foreign work, digital assets, and cross-border filing facts build the tax file before the return locks in the position. For an Argentina move, that means mapping income, currency conversion, FBAR, Form 8938, foreign tax credit support, state exit, and local-counsel handoff before the exchange-rate file becomes an audit reconstruction. To request an Argentina expat tax diagnostic, reach me at noah@sheepdogtax.com.

Sources (official source first)

BCRA, Stage 3 economic program announcement. https://www.bcra.gob.ar/en/news/inicio-de-la-fase-3-del-programa-economico/
BCRA, Communication A 8226. https://www.bcra.gob.ar/Pdfs/comytexord/A8226.pdf
BCRA, Communication A 8336. https://www.bcra.gob.ar/Pdfs/comytexord/A8336.pdf
BCRA, September 30, 2025 press note on individual dollar purchases. https://www.bcra.gob.ar/archivos/Pdfs/Noticias/Comunicado-30-septiembre-2025.pdf
IRS, Foreign Currency and Currency Exchange Rates. https://www.irs.gov/individuals/international-taxpayers/foreign-currency-and-currency-exchange-rates
IRS, Yearly Average Currency Exchange Rates. https://www.irs.gov/individuals/international-taxpayers/yearly-average-currency-exchange-rates
IRS, U.S. Citizens and Resident Aliens Abroad. https://www.irs.gov/individuals/international-taxpayers/us-citizens-and-resident-aliens-abroad

Prepared by Noah Green, CPA, CFE.