Becoming a Singapore citizen is the final step of the immigration journey, and it has clear requirements: time as a PR, an eligible route, and a willingness to give up your other citizenship. This guide sets out the Singapore citizenship requirements for 2026, who qualifies, the documents you need, and what approval actually depends on.
Quick answer: To apply for Singapore citizenship you generally need to have held Singapore PR for at least two years and be aged 21 or above. Spouses of citizens (married and PR for at least two years), children under 21 of citizens, and eligible students can also apply. If approved, you must renounce all other citizenships and take the Oath of Renunciation, Allegiance and Loyalty. Approval is discretionary and based on a holistic assessment of your commitment to Singapore.
Who can apply for Singapore citizenship?
You apply under the route that fits your situation.
| Route | Requirement |
| PR route (most common) | Held PR for at least 2 years and aged 21 or above |
| Spouse of a citizen | Married to a Singapore citizen and a PR, generally for at least 2 years |
| Child of a citizen | Unmarried child under 21, born within a legal marriage or legally adopted by a citizen |
| Aged parent of a citizen | Parent of a Singapore citizen |
| Student route | Lived in Singapore 3+ years (at least 1 year as a PR) and passed a national exam (PSLE, GCE N/O/A) or in the Integrated Programme |
The PR route is by far the most common. Note the sequence: you become a PR first, then a citizen. If you are not yet a PR, start with our guide on how to apply for Singapore PR.
The core requirements
For the standard PR route:
- At least two years as a PR at the time you apply. In practice, a longer, well-established PR record strengthens the case.
- Aged 21 or above. Younger applicants are usually included in a parent’s application.
- A record of commitment. Stable employment, tax contributions, time in Singapore, and genuine integration all matter.
Including your family: you can include your spouse and unmarried children under 21 (born within a legal marriage or legally adopted) in your application.
Documents you need
- Identity documents: passport, NRIC, and the Entry or Re-Entry Permit confirming your PR status.
- Civil documents: birth certificate, and a marriage certificate for spouse-based or family applications.
- Supporting documents: employment, income, and qualification records, plus anything evidencing your contribution and integration.
Any non-English document needs an official, notarised translation. As with PR, applications are made online through ICA with Singpass.
Renouncing other citizenships
Singapore does not allow dual citizenship for adults, so this is a firm condition. A successful applicant must:
- Renounce all other citizenships.
- Take the Oath of Renunciation, Allegiance and Loyalty (ORAL), pledging allegiance to Singapore alone.
Because renouncing a foreign citizenship is handled by that country and can be slow, factor it into your planning. For the full picture, see our guide on whether Singapore allows dual citizenship.
National Service: for families with sons, remember that male citizens (and second-generation male PRs) are liable for NS. This is an important consideration before taking up citizenship.
How long does it take?
ICA aims to process citizenship applications within about 12 months, though many applicants wait 18 to 24 months in practice. Approval is discretionary; ICA does not publish a formula and assesses each case holistically for genuine, long-term commitment to Singapore.
Citizenship vs staying a PR
Citizenship is not automatically the right move for everyone. It adds the vote, a Singapore passport, and the strongest subsidies, but it requires giving up your other passport for good. Many people weigh this carefully. Our comparison of Singapore PR vs citizen lays out the trade-offs, and our guide on PR benefits covers what you already get as a PR.
How First Immigration can help
The requirements are only the starting point; a strong, well-timed application is what wins approval. First Immigration helps you:
- Confirm which route fits and whether you are ready to apply.
- Prepare a complete, consistent application.
- Plan around renunciation and, where relevant, National Service.
- Present your commitment to Singapore in the strongest light.
Explore our Singapore citizenship service, or speak to our consultants through the contact page.
Frequently asked questions
What are the requirements for Singapore citizenship?
Generally, you must have held PR for at least two years and be 21 or above. Spouses of citizens (married and PR for at least two years), children under 21 of citizens, and eligible students can also apply. Approval requires renouncing other citizenships.
How long must I be a PR before applying for citizenship?
At least two years, though a longer, stable PR record strengthens your application.
Can I keep my other citizenship?
No. Singapore does not allow dual citizenship for adults. You must renounce all other citizenships and take the Oath of Renunciation, Allegiance and Loyalty.
Can my spouse and children apply with me?
Yes. You can include your spouse and unmarried children under 21 in your application.
How long does a citizenship application take?
ICA aims for about 12 months, but many applicants wait 18 to 24 months. Approval is discretionary.
What documents do I need for citizenship?
Identity documents (passport, NRIC, Entry or Re-Entry Permit), civil documents (birth and marriage certificates), and supporting employment, income, and qualification records.
Is Singapore citizenship approval guaranteed if I meet the requirements?
No. Meeting the requirements lets you apply; ICA then assesses your overall commitment to Singapore holistically and decides at its discretion.
Should I apply for citizenship or stay a PR?
It depends on whether you are ready to give up your other passport. Citizenship adds the vote, a passport, and top subsidies; PR keeps your original nationality. Weigh both before deciding.
