Updated to 21 November 2025 (Act No. 11 of 2025 and S.I. No. 547 of 2025)
All effects below are reflected in the most recent Revised Act.
Immigration Act 1999
No. 22 of 1999
Contents
Commencement
| Section | Commencement/Effective Date Where the commencement and effective dates differ, the effective date is shown below.
|
Commencement Information |
|---|---|---|
| Ss. 1-10 | 7 July 1999 | Commenced on enactment |
| S. 11(1)(a-o) | 20 January 2000 | Immigration Act, 1999 (Section 11) (Commencement) Order 2000 (S.I. No. 9 of 2000), art. 2 |
| S. 11(1)(p) | 20 November 2000 | Immigration Act, 1999 (Section 11(1)(p)) (Commencement) Order 2000 (S.I. No. 364 of 2000), art. 2 |
| S. 11(1)(q-t) | 20 January 2000 | Immigration Act, 1999 (Section 11) (Commencement) Order 2000 (S.I. No. 9 of 2000), art. 2 |
| Ss. 12, 13 | 7 July 1999 | Commenced on enactment |
Amendments and other effects
| How Affected | Affecting Provision | Affecting Provision Commencement/Effective Date
Where the commencement and effective dates differ, the effective date is shown below.
|
Commencement Source |
|---|---|---|---|
| References construed | 66/2015, ss. 1(2), 51(4) | 31 December 2016 | International Protection Act (Commencement) (No. 3) Order 2016 (S.I. No. 663 of 2016), art. 4 |
| Retention of data where offence under | S.I. No. 597 of 2011, 1(2), 2, 6 | 1 November 2011 | S.I. No. 597 of 2011, 1(2), 2, 6 |
| Transfer of functions under | 40/2013, ss. 1(2), 6, 82, sch. 1 | 1 January 2014 | Child and Family Agency Act 2013 (Commencement) Order 2013 (S.I. No. 502 of 2013), art. 2 |
| 42/2004, ss. 3 (1), 4, 58, 59(1), (2), (3) & sch. 3 | 1 January 2005 | Health Act 2004 (Commencement) (No. 2) Order 2004 (S.I. No. 887 of 2004), art. 2 | |
| S. 3 discretionary power of Min. thereunder stated not to be affected | S.I. No. 518 of 2006, regs. 1(2), 4(6) | 10 October 2006 | S.I. No. 518 of 2006, regs. 1(2), 4(6) |
| S. 3 applied | S.I. No. 518 of 2006, regs. 1(2), 14(4) | 10 October 2006 | S.I. No. 518 of 2006, regs. 1(2), 14(4) |
| S. 3 conditions prescribed under | 16/2006, ss. 21(1), 41(4) | 1 January 2007 | Employment Permits Act 2006 (Commencement) Order 2006 (S.I. No. 682 of 2006), art. 2 |
| S. 3(1) amended | 8/2019, ss. 2(1)(i), 95(a) | 15 July 2019 | Withdrawal of the United Kingdom from the European Union (Consequential Provisions) Act 2019 (Part 14) (Commencement) Order 2019 (S.I. No. 346 of 2019), art. 2 |
| S. 3(1) application extended | 66/2015, ss. 1(2), 51(4) | 31 December 2016 | International Protection Act (Commencement) (No. 3) Order 2016 (S.I. No. 663 of 2016), art. 4 |
| S. 3(1A) subsection inserted | 29/2000, ss. 10 (a) (i), 13(2) | 5 September 2000 | Illegal Immigrants (Trafficking) Act 2000 (Commencement) Order 2000 (S.I. No. 266 of 2000) |
| S. 3(2)(f) applied | S.I. No. 518 of 2006, regs. 1(2), 3(1)(c), 4 | 10 October 2006 | S.I. No. 518 of 2006, regs. 1(2), 3(1)(c), 4 |
| S. 3(3) regs. apply to notification of an intention to make a deportation order under | S.I. No. 518 of 2006, regs. 1(2), 3(1)(c) | 10 October 2006 | S.I. No. 518 of 2006, regs. 1(2), 3(1)(c) |
| S. 3(3) particulars to be included in notification of proposal under | S.I. No. 518 of 2006, regs. 1(2), 4(1)(a) | 10 October 2006 | S.I. No. 518 of 2006, regs. 1(2), 4(1)(a) |
| S. 3(4)(b) amended | 18/2023, ss. 1(4), 44(a) | 31 July 2023 | Courts and Civil Law (Miscellaneous Provisions) Act 2023 (Commencement) Order 2023 (S.I. No. 389 of 2023), art. 3(g) |
| S. 3(4A) inserted | 18/2023, ss. 1(4), 44(b) | 31 July 2023 | Courts and Civil Law (Miscellaneous Provisions) Act 2023 (Commencement) Order 2023 (S.I. No. 389 of 2023), art. 3(g) |
| S. 3(6) applied | S.I. No. 518 of 2006, regs. 1(2), 4(5) | 10 October 2006 | S.I. No. 518 of 2006, regs. 1(2), 4(5) |
| S. 3(7) form prescribed | S.I. No. 55 of 2005, reg. 4 & sch. 1 | 3 February 2005 | S.I. No. 55 of 2005, reg. 4 & sch. 1 |
| S.I. No. 103 of 2002, reg. 4 & sch. 1 | 25 March 2002 | S.I. No. 103 of 2002, reg. 4 & sch. 1 | |
| S.I. No. 319 of 1999, reg. 3 | |||
| S. 3(9)(a), par. substit. | 29/2000, ss. 10(a)(ii), 13(2) | 5 September 2000 | Illegal Immigrants (Trafficking) Act 2000 (Commencement) Order 2000 (S.I. No. 266 of 2000) |
| S. 3(9)(a)(i)(IV) amended with transitional provisions | 7/2022, ss. 1(2), 5(1), 24, sch. 3 ref. 3 | Not Yet Commenced | |
| S. 3(12) substituted | 18/2023, ss. 1(4), 44(c) | 31 July 2023 | Courts and Civil Law (Miscellaneous Provisions) Act 2023 (Commencement) Order 2023 (S.I. No. 389 of 2023), art. 3(g) |
| S. 3A inserted | 8/2019, ss. 2(1)(i), 95(b) | 15 July 2019 | Withdrawal of the United Kingdom from the European Union (Consequential Provisions) Act 2019 (Part 14) (Commencement) Order 2019 (S.I. No. 346 of 2019), art. 2 |
| S. 3B inserted | 8/2019, ss. 2(1)(i), 95(b) | 15 July 2019 | Withdrawal of the United Kingdom from the European Union (Consequential Provisions) Act 2019 (Part 14) (Commencement) Order 2019 (S.I. No. 346 of 2019), art. 2 |
| S. 4 conditions prescribed under | 16/2006, ss. 21(2), 41(4) | 1 January 2007 | Commenced on enactment |
| S. 5 substit. | 66/2015, ss. 1(2), 78 | 10 March 2016 | International Protection Act 2015 (Commencement) (No. 2) Order 2016 (S.I. No. 133 of 2016), art. 2(a) |
| S. 5(1) subsection substituted | 29/2000, ss. 10(b), 13(2) | 5 September 2000 | Illegal Immigrants (Trafficking) Act 2000 (Commencement) Order 2000 (S.I. No. 266 of 2000) |
| S. 5(1) places prescribed for the purposes of | S.I. No. 55 of 2005, regs. 5, 7 & sch. 2 | 3 February 2005 | S.I. No. 55 of 2005, regs. 5, 7 & sch. 2 |
| S.I. No. 103 of 2002, reg. 4 & sch. 2 | 25 March 2002 | S.I. No. 103 of 2002, reg. 4 & sch. 2 | |
| S.I. No. 319 of 1999, reg. 4 | 18 October 1999 | S.I. No. 319 of 1999, reg. 4 | |
| S. 5(1) procedure following arrest prescribed | S.I. No. 319 of 1999, reg. 6 | 18 October 1999 | S.I. No. 319 of 1999, reg. 6 |
| S. 5(4)(c) amended | 40/2013, ss. 1(2), 97, sch. 2 pt. 12 | 1 January 2014 | Child and Family Agency Act 2013 (Commencement) Order 2013 (S.I. No. 502 of 2013), art. 2 |
| 42/2004, ss. 3 (1), 75 & sch. 6, pt. 18 | 1 January 2005 | Health Act 2004 (Commencement) (No. 2) Order 2004 (S.I. No. 887 of 2004), art. 2(i) | |
| S. 5(7)(a) amended with transitional provisions | 7/2022, ss. 1(2), 5(1), 24, sch. 3 ref. 3 | Not Yet Commenced | |
| S. 6(1)(a) amended * | 18/2023, ss. 1(4), 45(a)(i) | 31 July 2023 | Courts and Civil Law (Miscellaneous Provisions) Act 2023 (Commencement) Order 2023 (S.I. No. 389 of 2023), art. 3(g) |
| S. 6(1)(b) amended * | 18/2023, ss. 1(4), 45(a)(ii) | 31 July 2023 | Courts and Civil Law (Miscellaneous Provisions) Act 2023 (Commencement) Order 2023 (S.I. No. 389 of 2023), art. 3(g) |
| S. 6(1)(b) amended with transitional provisions * | 19/2022, ss. 2(1), 27, 40(1) | 22 July 2022 | Civil Law (Miscellaneous Provisions) Act 2022 (Parts 1, 4, 5 and 8) (Commencement) Order 2022 (S.I. No. 370 of 2022), art. 2 |
| S. 6(1)(b) amended * | 1/2004, s. 16(5) | 13 February 2004 | Commenced on enactment |
| S. 6(b) amended | 29/2000, ss. 10(c)(i), 13(2) | 5 September 2000 | Illegal Immigrants (Trafficking) Act 2000 (Commencement) Order 2000 (S.I. No. 266 of 2000) |
| S. 6(1)(c) inserted | 18/2023, ss. 1(4), 45(a)(iii) | 31 July 2023 | Courts and Civil Law (Miscellaneous Provisions) Act 2023 (Commencement) Order 2023 (S.I. No. 389 of 2023), art. 3(g) |
| S. 6(1A) inserted | 18/2023, ss. 1(4), 45(b) | 31 July 2023 | Courts and Civil Law (Miscellaneous Provisions) Act 2023 (Commencement) Order 2023 (S.I. No. 389 of 2023), art. 3(g) |
| S. 6(2) subsection inserted | 29/2000, ss. 10(c)(ii), 13(2) | 5 September 2000 | Illegal Immigrants (Trafficking) Act 2000 (Commencement) Order 2000 (S.I. No. 266 of 2000) |
| S. 6(2) substituted | 18/2023, ss. 1(4), 45(c) | 31 July 2023 | Courts and Civil Law (Miscellaneous Provisions) Act 2023 (Commencement) Order 2023 (S.I. No. 389 of 2023), art. 3(g) |
| S. 6(3) inserted | 18/2023, ss. 1(4), 45(c) | 31 July 2023 | Courts and Civil Law (Miscellaneous Provisions) Act 2023 (Commencement) Order 2023 (S.I. No. 389 of 2023), art. 3(g) |
| S. 8(1) persons authorised for the purposes of | S.I. No. 319 of 1999, reg. 5 | 18 October 1999 | S.I. No. 319 of 1999, reg. 5 |
SIs made under the Act
| Section | SIs made under the Act |
|---|---|
| S. 7 | Immigration Act 1999 (Deportation) (Amendment) Regulations 2017 (S.I. No. 74 of 2017) |
| Immigration Act 1999 (Deportation) (Amendment) Regulations 2016 (S.I. No. 134 of 2016) | |
| Immigration Act 1999 (Deportation) Regulations 2005 (S.I. No. 55 of 2005) | |
| Immigration Act 1999 (Deportation) Regulations 2002 (S.I. No. 103 of 2002) | |
| Immigration Act, 1999 (Deportation) Regulations 1999 (S.I. No. 319 of 1999) |