There is no single easiest country to get citizenship. The answer depends on what you can offer a state: years of residence, a family line, a marriage, or capital. A route that takes two years for one person can be closed to another.
That said, a clear pattern holds in 2026. Latin America still has the shortest naturalization timelines, parts of Europe remain generous to descendants of former citizens, and a small group of countries sell citizenship outright. Several popular routes also became harder in 2025 and 2026, so older lists are often out of date.
This guide sorts the options by route, with the residence periods and recent rule changes as of October 2026.
Key takeaways
- The shortest standard naturalization periods are in South America: two years in Argentina (now contested in court), three in Paraguay, and three to five in Uruguay.
- Family ties cut timelines sharply. Brazil drops its four-year rule to one year for parents and spouses of Brazilians.
- Descent can be the fastest route of all, because there is often no residence requirement. Italy narrowed its rules in 2025, while Ireland's grandparent route is unchanged.
- Investment programs are fast but expensive, and they face more scrutiny from the EU and the US each year.
- Peru, Portugal and Germany all lengthened their timelines between 2025 and 2026.
What makes a citizenship 'easy'
Before comparing countries, it helps to define the word. Most people who search for an easy citizenship care about some mix of these factors:
- Years of legal residence before an application is possible.
- Physical presence, meaning how many days per year you must actually spend in the country.
- Language and civics tests, which range from none to demanding.
- Renunciation, because some countries make you give up your current passport.
- Cost and paperwork, including translations, apostilles and legal fees.
- Discretion, meaning whether approval is a right once you meet the rules or a decision an official can refuse.
A country with a two-year rule but strict physical presence checks may be harder in practice than one with a five-year rule and no presence test. For a full map of legal options, see our guide on how to get a second passport.
Countries with the shortest naturalization timelines
Naturalization is the classic route: you move, hold legal residence, and apply after a set number of years. The table shows standard periods and the main shortcuts.
| Country | Standard residence | Common shortcuts | Notes |
|---|---|---|---|
| Argentina | 2 years | None needed | A 2025 decree tightened the process; courts have challenged it |
| Paraguay | 3 years | None | Counted from permanent residence; long absences can disqualify |
| Uruguay | 3 years with family, 5 without | Family status | Constitutional rule; proof of residence is strict |
| Brazil | 4 years | 1 year with a Brazilian child or spouse | Portuguese language proof required |
| Mexico | 5 years | 2 years for Latin American and Iberian nationals, and others | Spanish and culture exam |
| Spain | 10 years | 2 years for Ibero-American nationals, 1 year if married to a Spaniard | Most others must renounce |
| Canada | 1,095 days in 5 years | None for most | Physical presence, not just legal status |
| Germany | 5 years | 3-year fast track abolished in 2025 | Dual citizenship allowed since 2024 |
| Peru | 5 years (was 2) | 4 years of marriage | Income test added in 2025 |
Argentina
Argentina's nationality law has long required just two years of continuous legal residence, with applications decided by federal judges. A decree issued in May 2025 moved decisions to the national immigration authority, required applicants to show they had not left the country during those two years, and created a separate route for people who make a 'relevant investment'. At the end of June 2026, the National Electoral Chamber struck the decree down in an individual case, ruling that citizenship is a matter for Congress, according to the Buenos Aires Herald. As of October 2026, the procedure is in flux, so applicants usually get current local legal advice before filing.
Paraguay
Paraguay's Constitution sets a minimum of three years of residence, plus good conduct and a regular trade or profession. Under the Supreme Court's rules, the three years run from the grant of permanent residence, and absences of more than three months per year can block an application. Paraguay's permanent residence is relatively accessible, which is why this route attracts attention. Our article on Paraguay citizenship and who qualifies covers the details.
Uruguay
Article 75 of Uruguay's Constitution grants legal citizenship after three years of habitual residence for people with a family in the country, or five years for those without. Applicants also need good conduct and some capital, property or a profession. Uruguayan legal citizens wait three more years after the grant before they can exercise some citizenship rights, such as voting.
Brazil
Brazil's ordinary naturalization requires four years of residence, but the period falls to one year for people with a Brazilian child or a Brazilian spouse or civil partner, as the UNHCR's Brazil help page summarizes. Applicants must show they can communicate in Portuguese, for example with a CELPE-Bras certificate. Because any child born in Brazil is Brazilian, families who have a child there often qualify for the one-year track.
Canada and Germany
Canada counts days, not years. Adults need at least 1,095 days of physical presence in the five years before they apply, and most must have filed taxes for three of those years, according to Immigration, Refugees and Citizenship Canada. Germany cut its standard period from eight to five years in June 2024 and allowed dual citizenship at the same time. In October 2025, however, the Bundestag abolished the three-year fast track for exceptionally integrated applicants, so five years is now the floor.
Citizenship by descent: the fastest route if you qualify
If a parent or grandparent held a European citizenship, you may already have a claim. Descent routes often have no residence requirement at all, so the main work is documents: birth, marriage and naturalization records across several generations.
- Ireland: Anyone with an Irish-born grandparent can apply through the Foreign Births Register. Our guide to Irish citizenship through grandparents explains the steps.
- Italy: A 2025 law limited automatic citizenship for people born abroad who hold another nationality. In general, a parent or grandparent must have been born in Italy. See Italian citizenship by descent after the 2025 reform.
- Poland: Descendants of Polish citizens can ask for confirmation of citizenship if the line was never broken by a loss of citizenship.
- Hungary: A simplified naturalization route exists for people with a Hungarian-citizen ancestor who can speak Hungarian, with no residence requirement.
- Germany: Descendants of people stripped of German citizenship by the Nazi regime can have it restored, usually without the standard conditions.
Descent claims are often the cheapest route in money terms, but they can take years when archives are slow or records are missing.
Marriage and family routes
Marriage rarely gives instant citizenship, but it shortens timelines in many countries. Spain cuts its 10-year rule to one year of residence for spouses of Spaniards. Brazil cuts four years to one. Mexico reduces five years to two. Ireland lets spouses apply after three years of marriage plus residence, and the UK lets spouses apply once they have three years of residence and settled status.
Most countries test whether a marriage is genuine. Interviews, joint documents and home visits are common, and a marriage of convenience can lead to refusal or later revocation.
Citizenship by investment: fast, but not cheap
A small group of countries grant citizenship in exchange for a donation or investment, often within months and with little or no residence. The five Eastern Caribbean programs (Antigua and Barbuda, Dominica, Grenada, Saint Kitts and Nevis, and Saint Lucia) are the best known. Turkey grants citizenship for real estate purchases of at least US$400,000 held for three years. Other programs exist in the Pacific, Africa and Central America.
These routes are the 'easiest' only if money is not the constraint. Prices have risen, due diligence is stricter, and the EU has put pressure on visa-free access for some passports. Our comparison of the cheapest citizenship by investment programs lists current minimums.
Rules that changed in 2025 and 2026
Lists of easy citizenships age quickly. Recent changes include:
- Peru: A new nationality law, Law 32421, published in August 2025, raised naturalization from two years of residence to five and added an income test.
- Portugal: A revised nationality law, Organic Law 1/2026, promulgated in May 2026 after an earlier version was partly struck down by the Constitutional Court, raised the standard period from five years to 10, or seven for EU and Portuguese-speaking country nationals. Time now counts from the grant of a residence permit.
- Germany: The three-year fast track ended in October 2025.
- Italy: The 2025 reform ended unlimited generational claims for most people born abroad.
- Argentina: The 2025 decree and the court challenges against it leave the procedure uncertain.
How to compare the routes for your own situation
The easiest country on paper may not be easy for a specific person. A few questions usually decide it:
- Does your current country allow dual citizenship? Some countries cancel your citizenship when you naturalize elsewhere. Check our list of countries that do not allow dual citizenship.
- Can you live there for the required period? Physical presence rules are where many plans fail.
- Do you have the documents? Descent and marriage routes depend on records you may need years to collect.
- What will the passport do for you? Visa-free access, regional residence rights and family inclusion vary a lot.
Citizenship and tax residence are separate. A new passport does not by itself change where you pay tax, which depends on residence rules in each country involved.
Frequently asked questions
Which country gives citizenship the fastest?
For people with a qualifying ancestor, descent routes can be fastest because there is no residence period. For others, investment programs can deliver citizenship in a few months. Among standard naturalization routes, Argentina's two-year rule is the shortest, although its procedure is under legal challenge as of October 2026.
Can I get citizenship without living in the country?
Yes, in some cases. Descent routes and most investment programs have little or no residence requirement. Naturalization, by definition, requires a period of legal residence.
Is it easier to get citizenship through marriage?
Often it is faster, not automatic. Many countries shorten the residence period for spouses, for example to one year in Spain and Brazil, but they still check that the marriage is genuine.
Do I have to give up my current citizenship?
It depends on both countries. Spain, Austria and the Netherlands, among others, generally require new citizens to renounce. Some home countries, such as China and India, end your citizenship automatically when you naturalize elsewhere.
Does a second citizenship lower my taxes?
Not by itself. Most countries tax based on residence, not passports, and the United States taxes its citizens wherever they live. Any tax effect depends on where you live and on the rules of each country involved.
Important: This article is general information, not tax, legal or financial advice. Rules change often and depend on your personal circumstances. Speak with a qualified professional in each relevant country before you act.