Penalties for Illegal Entry into Singapore..
Sourced from the Singapore Immigration Act Chapter 133, Part II, Section 6 (3)
Control of entry into and departure from Singapore
Section 6.
(1) No person, other than a citizen of Singapore, shall enter or attempt to enter Singapore unless —
(a) he is in possession of a valid entry permit or re-entry permit lawfully issued to him under section 10 or 11;
(b) his name is endorsed upon a valid entry permit or re-entry permit in accordance with section 12, and he is in the company of the holder of that permit;
(c) he is in possession of a valid pass lawfully issued to him to enter Singapore; or
(d) he is exempted from this subsection by an order made under section 56.
(2) Every person departing from Singapore, other than a citizen of Singapore or a person exempted from this subsection by an order made under section 56, shall, if so required by an immigration officer, complete an embarkation form and submit it for examination by that officer at the time he leaves Singapore.
(3) Any person who contravenes subsection (1) or (2) shall be guilty of an offence and —
(a) in the case of an offence under subsection (1), shall on conviction be punished with imprisonment for a term not exceeding 6 months and shall also, subject to sections 325(1) and 330(1) of the Criminal Procedure Code 2010, be punished with caning with not less than 3 strokes, or where by virtue of that section he is not punishable with caning, he shall, in lieu of caning, be punished with a fine not exceeding $6,000;
(b) in the case of an offence under subsection (2), shall be liable on conviction to a fine not exceeding $2,000 or to imprisonment for a term not exceeding 6 months or to both.
Source: Singapore Immigration Act
170.1 - 874,782