New German Dual Citizenship Law: Opportunities for Germans with US Green Cards
Germany’s 2024 citizenship reform means Germans with U.S. green cards can generally pursue U.S. naturalization without first giving up German nationality. That is a major practical shift because one of the biggest historical reasons Germans delayed filing Form N-400 was the fear of losing the German passport and the EU rights attached to it. The legal obstacle on the German side is now far lower than it used to be, even though the U.S. naturalization requirements themselves have not changed.
The German Federal Government’s public explanation of the reform highlights the move toward allowing multiple citizenship and confirms that the 2024 reform reduced the standard residence period for naturalization in Germany from eight years to five.Federal Government USCIS, for its part, still requires most lawful permanent residents to hold a green card for five years and show 30 months of physical presence before naturalizing in the United States.USCIS This guide explains what changed, what did not, and why tax planning still matters before you file.
What Changed in German Citizenship Law?
Germany’s 2024 reform made multiple citizenship far more broadly acceptable, which removed the old default assumption that U.S. naturalization would cost a German citizen their German passport.
Before the reform, many Germans treated dual citizenship as the exception rather than the rule when voluntarily naturalizing elsewhere. In practice, that often meant delaying U.S. citizenship or seeking special retention permission. The reform changed the default. It also shortened the standard German naturalization residence period from eight years to five, even though later political debate has focused on whether to narrow some parts of that reform in the future.
The key practical point for Germans in the United States is simple: the old “if I naturalize in America, I automatically lose Germany” assumption is no longer the baseline planning rule it once was.
Why Does This Matter for Germans With U.S. Green Cards?
For German green card holders, the reform turns U.S. naturalization from a nationality trade-off into a more ordinary strategic decision about rights, taxes, and long-term plans.
That matters because naturalizing in the United States changes much more than travel convenience. It gives voting rights, stronger reentry protection after long travel, and a U.S. passport, while also preserving access to German nationality and the broader EU framework for residence and work. Our article on family-based green cards is relevant if your permanent residence came through marriage or another family route, and our visa bulletin guide helps if your earlier path to residence involved waiting lines.
“For years, many German clients delayed naturalization for one reason above all: they did not want to lose Germany,” says Kari Foss-Persson, Esq., Managing Partner at Vinland Immigration. “That decision is now much more about whether U.S. citizenship fits their life than about being forced to choose only one passport.”
U.S. Naturalization Requirements
The German reform changed the nationality consequences, but it did not soften the U.S. eligibility rules for filing Form N-400.
Most applicants still need five years as a lawful permanent resident, continuous residence, 30 months of physical presence in the United States, and at least three months of residence in the state or USCIS district where they file. Applicants must also pass English and civics requirements unless an exception applies.
These are not difficult rules conceptually, but they catch frequent travelers. Germans who split time between Germany and the United States for business or family reasons should count travel days carefully before filing. Our article on the U.S.-Germany tax treaty is also relevant for people whose cross-border life will continue after naturalization.
Special Rules for Military Spouses Abroad
Some spouses of U.S. service members or other qualifying U.S. personnel abroad may naturalize under special rules without the usual residence-and-presence pattern.
This is most relevant for Germans married to U.S. military members stationed in Germany or elsewhere outside the United States. In those cases, the spouse may be able to use INA 319(b)-type rules that relax the normal physical presence structure, while still requiring English, civics, and good moral character.
That exception is powerful but technical. It should be reviewed against the exact nature of the U.S. citizen spouse’s overseas assignment rather than assumed from military status alone.
Cross-Border Financial Implications
Dual citizenship can simplify the nationality issue while making the tax conversation more important, not less.
Once you become a U.S. citizen, the United States continues to tax you on worldwide income even if you later move back to Germany. That brings ongoing filing, information-reporting, and account-disclosure obligations. Our guides to FBAR reporting, FATCA, and the exit tax explain the main pressure points.
Keeping German citizenship does not reduce U.S. tax reporting. A dual national who becomes a U.S. citizen still takes on U.S. worldwide tax filing and disclosure obligations.
“The German reform solved a citizenship problem, but it did not solve a tax-planning problem,” says Kari Foss-Persson, Esq., Managing Partner at Vinland Immigration. “Clients should model the financial consequences before the oath, not after it.”
For more complex cases, our cross-border tax and tax compliance practice pages explain the broader advisory work that often becomes necessary.
Consular Processing vs. Adjustment of Status
This question matters mainly for Germans who still need to get the green card before they can think about naturalization at all.
If you are still in Germany and planning the move, your permanent residence path may begin through consular processing or adjustment of status depending on where you are located and which immigrant category you use. The naturalization conversation only starts later, once permanent residence is secured and the residence-and-presence clock has been built.
That is why citizenship planning works best when it starts early. The path to the green card, the timing of time spent abroad, and the tax structure after naturalization are all connected.
Practical Timing for N-400 Filings
The best time to file N-400 is usually as soon as the legal requirements are clearly met and the travel history has been checked carefully.
There is rarely an advantage to waiting once the person is eligible and prepared. The bigger risk is filing casually while travel days, residence breaks, or cross-border life patterns are still fuzzy. Applicants who spend long periods in Germany should review the physical-presence and continuous-residence calculations before submitting anything.
This is also the right stage to ask whether your long-term plan could later include a return to Germany and even, for some people, a future renunciation of U.S. citizenship. That does not mean naturalization is a mistake. It means the citizenship decision should be integrated into the longer arc of your life.
Is Dual Citizenship the Right Move for You?
The reform made dual citizenship easier legally, but the personal decision still turns on residence plans, tax tolerance, and how permanent your U.S. future really is.
For many Germans with green cards, the answer is now yes because the old forced-choice problem is largely gone. For others, the better answer is to wait until travel, taxes, and long-term residence patterns are clearer. The right outcome is not to naturalize as soon as possible. It is to naturalize when the legal eligibility, the tax analysis, and the life plan finally point in the same direction.