How long can I be naturalized after marrying a Singaporean?

Permanent residents can apply for Singapore citizenship after two years. If all goes well, two years, seven months to three years.

According to the relevant regulations of Singapore, anyone who marries a Singaporean citizen or permanent resident (male or female) is eligible to apply for permanent resident. However, the Singapore Immigration Bureau will handle each applicant on a case-by-case basis, and not every applicant can obtain permanent resident status. However, as long as the application is really a marriage with a Singapore citizen or permanent resident, and the application materials and relevant supporting documents submitted are complete and correct, the discipline of obtaining approval for the application is great. I would like to remind applicants not to falsify. Singapore Immigration Bureau has made great efforts in counterfeiting. Once identified, it is difficult for the applicant to enter Singapore. Even if you successfully immigrate to Singapore by using a fake marriage, as long as someone reports it or continues to investigate through the Immigration Bureau, your permanent resident status will be cancelled. In recent years, many people cheat the rights of permanent residents through fake marriages. After being reported, their permanent resident status was revoked.