How can immediate family members stay in Singapore permanently?

Answer:  During the period of the applicant holding the EP permit, if the monthly salary is more than S$6000, the spouse and children under 21 years old can apply for a dependent visa (DP);

During the period of the applicant holding the EP permit, if the monthly salary declaration exceeds S$12,000, parents can apply for a long-term visitor visa (LTVP);

When EP applies for PR, the applicant's spouse and children under the age of 21 can submit the PR application together as a subsidiary applicant;

Parents and children 21 years of age or older cannot apply for PR together, but parents can apply for a Long-Term Visit Visa (LTVP) valid for 5 years.