US Taxes for Americans Living in Mexico in 2026: FEIE, FBAR, Social Security, and What to File

Yes, Americans owe US taxes on worldwide income no matter where they live, so moving to Mexico does not end your IRS obligations. You still file every year, but the $132,900 foreign earned income exclusion (2026), the foreign tax credit, and the treaty rule on Social Security often shrink the bill.

The fear behind this question is usually "Will I get hit with taxes in two countries, or lose my status with the IRS if I leave?" The myth on the other side is that once you leave, the IRS forgets you, or that living abroad means you no longer file. Neither is true. The United States taxes its citizens by citizenship, not by address, and Mexico can tax you by residence. That overlap sounds frightening, but it is a solved problem, with tools built for exactly this situation. The people who get hurt are not the ones who owe tax. They are the ones who stop filing, or who file but miss the foreign account reports that carry the real penalties.

I have lived in Guanajuato since 2018, and taxes are the topic where clients most often say "I will deal with it later." I am not a CPA or an enrolled agent, and nothing here is tax advice. Tax law changes each year, and your facts matter more than any general rule. What I can give you is the framework I use with clients, built on 2026 figures, so you can walk into a preparer's office knowing which questions to ask. Peso amounts are converted at 17.19 pesos to the dollar, the mid-September 2026 rate.

Do You Still Owe US Taxes If You Live in Mexico?

Yes, you still file a US return, and you do so on your worldwide income. This is true whether you live in Mexico for two months or twenty years, and whether you become a Mexican tax resident or not. The rules that change when you move are which credits and exclusions you can use, when your deadlines fall, and what extra reports you need. Here is what stays the same and what changes.

Topic	Before the move	After the move
Filing a US return	Required if income passes the filing threshold	Still required, on worldwide income
Deadline	April 15	Automatic extension to June 15 for filers living abroad, though interest runs from April 15
State tax	Your state of residence	Depends on whether you keep your state domicile
Foreign account reporting	Not applicable	FBAR and possibly Form 8938
Excluding foreign wages	Not available	Possible with the FEIE
Credit for Mexican tax	Not available	Foreign tax credit on Form 1116
Social Security taxation	Federal rules apply	Federal rules still apply, and the treaty bars Mexican tax on it

A return is required once your gross income passes the filing threshold for your status, and if you have any self-employment income of $400 or more, you file no matter what. I would rather you file a return that shows zero tax due than skip one, because filing starts the clock on the statute of limitations and it protects your access to the exclusions and credits described below.

Do You Lose Your US Residency or Citizenship by Living in Mexico?

No. A US citizen does not lose citizenship by living abroad, by getting Mexican residency, or by holding both. Your passport, your Social Security eligibility, and your right to return are unaffected. Two nuances are worth knowing. First, a green card holder is in a different position, because living abroad for long periods can put permanent resident status at risk, and a re-entry permit is the tool for planned absences. This post is about US citizens. Second, your state can be a separate issue. Some states are aggressive about treating former residents as still domiciled there if you keep a home, a driver's license, a voter registration, or family ties. If you move to Mexico and want to stop being a resident of a state that taxes income, cut the ties deliberately and document it. If you keep them, expect the state to keep sending returns to your attention.

What Happens With Social Security Tax and Self-Employment Tax?

This is the trap that catches freelancers. The United States and Mexico do not have a totalization agreement, which is the type of treaty that stops you from paying social insurance taxes to two countries. If you are a US employee, the payroll taxes are usually withheld by your employer as they would be at home. If you are self-employed, you owe US self-employment tax of up to 15.3 percent of net earnings, and paying into Mexico's IMSS does not reduce it, and the FEIE does not reduce it either. Paying it is part of the price of freelancing as a US citizen abroad, and it is the number people forget to budget. My Mexico tax guide for US expats explains how the Mexican side, SAT filing, and the US side fit together.

How Do the FEIE and the Foreign Tax Credit Work?

These are the two main tools for avoiding double taxation, and most Americans in Mexico use one or the other. You cannot use both on the same income, so the choice matters.

Feature	Foreign earned income exclusion (FEIE)	Foreign tax credit (FTC)
What it does	Excludes foreign earned income from US income tax	Credits Mexican income tax against US tax on the same income
2026 limit	$132,900 per person	No cap on paid tax, limited by US tax on that income
Form	2555	1116
Applies to	Wages and self-employment income you earn abroad	Earned and unearned income, including pensions and investments
Requirement	Physical presence test or bona fide residence test	You paid or owe foreign income tax
Reduces self-employment tax	No	No
Best for	Remote workers and freelancers with modest Mexican tax	Retirees, higher earners, and people with investment income

How Does the FEIE Work in 2026?

The exclusion lets you remove up to $132,900 of foreign earned income from your US taxable income for 2026. To qualify, your tax home must be in a foreign country, and you must pass one of two tests. The physical presence test asks whether you spent at least 330 full days outside the United States in any consecutive 12 month period. The bona fide residence test asks whether you were a resident of a foreign country for an entire tax year, which is measured by your intent, your ties, and your length of stay, not by a single number of days. A spouse who also works can exclude their own amount, so a couple with two earners can exclude up to twice that.

Three points trip people up. First, the exclusion covers earned income only, meaning wages and self-employment income. It does not cover Social Security, pensions, dividends, interest, or rental income. Second, days in the United States count against the 330. A remote worker who flies home for a month every few months can still pass, but a spouse who splits the year cannot. Third, claiming the exclusion can affect other tax benefits. Excluded income generally cannot be used to support contributions to an IRA, and it can reduce credits you might have claimed. There is also a foreign housing exclusion, which lets you exclude or deduct qualifying housing costs above a base amount. For 2026 the base is about $21,264 and the cap is about $39,870 for most locations, though limits are set city by city, and in Mexico rent is low enough that many people gain little from it.

How Does the Foreign Tax Credit Work?

The foreign tax credit lets you subtract Mexican income tax you paid from your US income tax on the same income. If Mexican tax is higher than US tax on that income, you get no US tax and you can carry unused credit forward for 10 years. If Mexican tax is lower, you owe the difference to the IRS. The credit works on unearned income, which the FEIE does not, so retirees and investors tend to use it. If you are a Mexican tax resident earning through the RESICO regime, where the rates on gross income run as low as 1 to 2.5 percent, the Mexican tax paid is small, so the credit offsets little, and the FEIE is often stronger for working people. This is the sort of question a preparer answers by running both methods on your numbers.

What Do the Numbers Look Like in Practice?

Here are three examples, simplified and rounded, to show the pattern. Your result depends on your full return.

A remote employee earning $90,000 from a US employer. With the FEIE, the full $90,000 is excluded from federal income tax if the tests are passed, so federal income tax on wages may be close to zero. Payroll taxes are still withheld by the employer, and the state question remains. The main planning point is to keep the physical presence or residence test clean.

A freelancer with $120,000 in net self-employment income. The FEIE can exclude the income from income tax, but self-employment tax still applies, and it comes to about $17,000 at 2026 rates. That is a real cost that no exclusion removes, so a freelancer's budget should include it. If the freelancer is also a Mexican tax resident and registered under RESICO, Mexico takes a small percentage of gross receipts on top, and the two taxes do not offset each other.

A retired couple with $40,800 a year in Social Security and $20,000 in IRA withdrawals. Social Security is taxed at the federal level based on a formula using combined income, which is your adjusted income plus half of your benefits, and up to 85 percent of the benefit can be taxable at higher levels. For this couple, combined income is about $40,400, which puts a small slice of the benefit into taxable income, and with the standard deduction for a married couple their federal tax is likely zero or close to it. The point is that retirees on moderate income often owe very little, and the value of filing is that it shows it.

What Do You Have to Report to the IRS From Mexico?

This is where the penalties live. Owing tax is rarely the problem. Failing to report accounts is. Mexican bank accounts are foreign accounts for US purposes, and the reporting rules apply from the first day you open one.

Form	What it reports	2026 threshold	Where you file
FBAR (FinCEN 114)	Foreign financial accounts	Total across all accounts above $10,000 at any point in the year	FinCEN, due April 15 with an automatic extension to October 15
Form 8938 (FATCA)	Specified foreign financial assets	Abroad filers: $200,000 year end or $300,000 any time (single), $400,000 or $600,000 (married filing jointly)	With your tax return
Form 2555	The FEIE	Any claim of the exclusion	With your tax return
Form 1116	The foreign tax credit	Any claim of the credit	With your tax return
Form 3520	Certain foreign trusts and gifts	Usually not needed for a standard fideicomiso	With your tax return

How Does the FBAR Work?

The FBAR is a report to the Treasury, not the IRS, and it asks for the highest balance of each foreign account during the year. The $10,000 limit is the sum of all accounts, not each one. Someone with $4,000 in a Mexican checking account, $4,000 in a savings account, and $3,000 in a fintech wallet has crossed it. Accounts that count include bank accounts, brokerage accounts, some pension accounts, and accounts you have signature authority over, such as a joint account with a spouse or a parent. The deadline is April 15, and it automatically extends to October 15 without a request. Many people cross the threshold in the year they move because of a temporary balance, for example while they wait to close a house sale or transfer savings, and the highest balance is what counts.

When Do You Also File Form 8938?

Form 8938 is the FATCA report, and it has higher thresholds than the FBAR for people who live abroad. For a single filer living abroad, it is triggered above $200,000 at year end or $300,000 at any point, and for a married couple filing together it is $400,000 and $600,000. It overlaps with the FBAR for many assets, but they are separate filings with separate penalties. Failing to file Form 8938 carries an initial penalty of up to $10,000, and it can grow if the failure continues after notice. The forms ask for different things, so having filed one does not excuse the other.

What About a Fideicomiso and Foreign Trusts?

If you buy property in a restricted zone, which is within 50 kilometers of the coast or 100 kilometers of a border, foreigners hold it through a bank trust called a fideicomiso. The IRS has said in Revenue Ruling 2013-14 that a standard residential fideicomiso is not treated as a foreign trust, so Forms 3520 and 3520-A are generally not required. You still report rental income and any gain on sale, using your original cost basis in dollars, and you should confirm the treatment with a preparer if your structure is unusual. If you are thinking about buying, my guide to buying property as a foreigner covers the trust mechanics and closing costs.

What Happens With Your Mexican Bank Account and FATCA?

Mexican banks will ask for your US taxpayer identification number, usually on a form similar to the W-9, because they are required to report US persons. Do not treat that as a problem. It is the reason your account will be reported to the IRS, and it is a good reminder that the IRS will see it. If you are opening your first account, my guide to opening a Mexican bank account as a foreigner covers what the banks require, and it helps to know your tax filing status before you sit down with them.

What If You Have Not Filed in Years?

This is more common than people admit, and it is fixable. The IRS has a program called the Streamlined Foreign Offshore Procedures for taxpayers living abroad whose failure to file was not willful. It generally requires three years of back returns, six years of FBARs, and a statement explaining that the failure was not willful, and it comes with no penalty for those who qualify. The alternative is to wait until the IRS finds the problem, at which point penalties for missed foreign account reports can reach five figures per year even for non willful failures. If this is you, do not file anything on your own. Talk to a tax professional who handles expat back filings, because the choice of program matters. Filing late is far better than not filing.

How Do You Find a Preparer Who Knows Mexico?

Not every tax professional handles expats well, and the mistakes are expensive. Look for a CPA or enrolled agent who files Forms 2555, 1116, 8938, and FBARs regularly, and ask how many clients they have who live in Mexico or Latin America. Ask whether they will compare the FEIE and the foreign tax credit for you in writing, since a preparer who defaults to one method without running the numbers is guessing. Ask for a flat fee quote before you start, because expat returns take longer than domestic ones and hourly billing can surprise you. Ask whether they can coordinate with a Mexican accountant, because if you register with SAT or file a Mexican return, the two returns should tell the same story about your income and residence.

Bring the right documents to the first meeting: the last two years of US returns, income statements for the current year in dollars and pesos, statements showing the highest balance of each foreign account, a log of the days you spent in and out of the United States, and your Mexican residency card if you have one. If you are self-employed, add your invoices and expense records. A preparer who receives a clean folder in January is cheaper and faster than one who receives a shoebox in June, and your return is more likely to be right. My guide to getting your RFC explains the Mexican tax ID that many residents need for banking and invoicing.

What About Retirees, Social Security, and Pensions?

If you are retiring rather than working, the tax picture is more favorable than most people expect, mostly because of how the treaty treats Social Security.

Social Security. Under the US and Mexico tax treaty, Social Security benefits are taxable only by the country that pays them. That means Mexico does not tax your US benefits, even if you are a Mexican tax resident. The United States still taxes them under its normal rules: up to 50 percent of the benefit is taxable once your combined income passes $25,000 as a single filer or $32,000 as a married couple, and up to 85 percent once it passes $34,000 or $44,000. Moving to Mexico does not change the federal formula. My guide to Social Security in Mexico explains how to keep the payments coming and what the money buys.

IRA, 401(k), and private pensions. These are treated differently. If you become a Mexican tax resident, distributions from private retirement accounts and pensions are generally taxable where you reside, and you report them on your Mexican return and claim the foreign tax credit on your US return for the Mexican tax you pay. The rules depend on the type of account and the treaty article that applies, and some distributions such as Roth withdrawals raise separate questions. This is an area where a preparer who knows both systems earns their fee, because the answer for a $30,000 a year IRA withdrawal is different from the answer for a lump sum.

Selling your US home. If you sell your primary residence, you may exclude up to $250,000 of gain, or $500,000 for a married couple filing jointly, if you owned it and lived in it for two of the five years before the sale. That test can be met even if you move to Mexico afterward, as long as you sell within the window. Timing the sale around your move can save real money, and it is one more reason to talk to a preparer before you list the house.

Medicare and healthcare costs. These are not taxes, but they interact with your budget. I cover Medicare Part B and the choice between IMSS and private insurance in a separate guide, and the numbers there can change how much income you need to plan for. The Mexico Retirement Kit ($27) brings Social Security, IMSS, and healthcare into one plan.

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What Should Be on Your Tax Checklist Before You Move?

A short list handles most of the risk. Confirm your state domicile plan and what forms you need to end it. Gather two or three years of returns, so you have a baseline. Decide whether you expect to be a Mexican tax resident, since that changes which tools you use, and my guide to the 183 day rule and tax residency explains that decision. Set up a way to track your days in and out of the United States, which matters for the FEIE. Keep records of every foreign account balance, because the FBAR asks for the highest balance in dollars. A simple portable document scanner and a fireproof document bag keep tax records, passports, and residency papers safe, and I would scan everything into a folder you can reach from either country. If you are flying back to see your preparer or your family, compare fares on Expedia before the tax season rush.

The Bottom Line: What Should You Do About Your US Taxes?

For most Americans in Mexico, the practical plan is simple. Keep filing your US return every year, use the FEIE if you earn wages or self-employment income abroad, use the foreign tax credit if your income is unearned or your Mexican tax is high, and file the FBAR the moment your foreign accounts pass $10,000 in total. Retirees should expect their Social Security to be taxed only by the United States, at the ordinary federal rules, and to plan for how Mexico treats their private pensions. The number to budget for if you are self-employed is the self-employment tax, since no exclusion removes it.

Here is how I would decide. First, list your income by type: wages, self-employment, Social Security, pensions, investments, and rental income. Second, decide whether you will be a Mexican tax resident, since that decides whether you have a Mexican return at all. Third, count your accounts and balances, and file the FBAR if the total passes $10,000. Fourth, hire a preparer who works with US expats and asks to see both the US and Mexican sides. Fifth, calendar your deadlines: June 15 for the return, October 15 for the FBAR extension, and April for the Mexican return. The biggest mistake I see is not a wrong choice between the FEIE and the credit. It is not filing at all because the situation felt too complicated to start.

Frequently Asked Questions

Do Americans living in Mexico pay US taxes?

Yes. The US taxes citizens on worldwide income wherever they live. You file a US return each year, but tools such as the $132,900 exclusion for 2026, the foreign tax credit, and the treaty can reduce or eliminate the tax you owe.

Are Social Security benefits taxed in Mexico?

No. Under the US and Mexico tax treaty, Social Security is taxable only by the paying country. The US still taxes up to 85 percent of it depending on your income, while Mexico does not tax it.

Do I have to file an FBAR for a Mexican bank account?

Yes, if the combined balance of all your foreign accounts exceeds $10,000 at any point in the year. The report is FinCEN 114, due April 15 with an automatic extension to October 15. Failing to file can bring heavy penalties.

Can I use the FEIE and the foreign tax credit together?

Not on the same income. You choose one for each dollar of foreign earned income. Remote workers often prefer the FEIE, while retirees and investors usually rely on the credit. A preparer can compare both on your numbers.

Do I lose US citizenship or residency if I live in Mexico?

No. US citizens keep their citizenship and tax obligations while living abroad. Your state can still claim you as a resident if you keep ties there. Green card holders face different rules and should check reentry permits.

Before you act: Requirements, fees, eligibility rules, and local processes can change. Before making a financial, legal, medical, tax, insurance, immigration, or residency decision, confirm the current requirements with official sources and, when appropriate, a qualified professional.

Your Next Step

Taxes are the part of a move where an early plan is worth more than a late fix. The Mexico Retirement Kit ($27) covers Social Security, IMSS, and healthcare planning, and the Master Guide ($47) puts the whole relocation reference in one place. If you want to test your plan against your own numbers, a Mexico Reality Check ($149, 1 hour) is one honest conversation about whether your budget, income, and timeline line up, and you can book it directly on my calendar. The relocation cost calculator is a good place to start if you want a budget first.

If you would rather write to me first, email paul@mymexicomove.com. For any tax decision, please also consult a CPA or enrolled agent who works with US expats.