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Citizenship by descent — s 3(1)(b)

Topic Citizenship law 🇨🇦 Verified: 2026-05

Overview

Under s 3(1)(b) of the Citizenship Act, a person born outside Canada is a Canadian citizen at birth if at least one parent was a Canadian citizen at the time of the person's birth and that parent was not themselves born outside Canada to a citizen parent (the second-generation born-abroad bar, s 3(3)). In short: citizenship passes automatically to the first generation born abroad to a Canadian citizen, but not to the second generation. A second-generation person born abroad to a Canadian parent who was also born abroad is not automatically a citizen — they must apply for citizenship through the grant process.

The second-generation born-abroad bar was introduced by amendments to the Citizenship Act effective April 17, 2009. Prior to 2009, citizenship by descent could be transmitted indefinitely through generations — Canadians living abroad could pass citizenship to their children and grandchildren indefinitely. The 2009 amendments cut off transmission at the first generation born abroad.

Legal basis

  • Citizenship Act s 3(1)(b) — citizenship by descent: born outside Canada after 14 February 1977 and at the time of birth one parent was a citizen (subject to s 3(3))
  • Citizenship Act s 3(3) — the second-generation born-abroad bar: s 3(1)(b) does not apply to a person who is born outside Canada to a citizen parent who was also born outside Canada and was a citizen by descent under s 3(1)(b) (or the predecessor provision)
  • Citizenship Act s 3(1)(f) — transitional provision preserving citizenship for persons born outside Canada to a Canadian parent who was also born outside Canada before April 17, 2009 (grandfathering provision)

How it works

First generation born abroad — automatic citizen

A child born outside Canada to a Canadian citizen parent (where that parent was born in Canada or was a naturalised Canadian citizen) acquires Canadian citizenship automatically at birth under s 3(1)(b). No application or registration is required, but a Proof of Citizenship document or Canadian passport will be needed to exercise citizenship rights.

Second generation born abroad — not automatic

A child born outside Canada to a parent who is themselves a Canadian citizen by descent (also born outside Canada) does not automatically acquire citizenship. The child is a second-generation born-abroad person and the s 3(3) bar applies. To become a Canadian citizen, this person must:

  • Become a permanent resident of Canada, and
  • Meet the grant of citizenship requirements (presence, language, knowledge tests), and
  • Apply for and be granted citizenship under s 5

The 2009 grandfathering

Persons born outside Canada to a Canadian parent who was also born outside Canada before April 17, 2009 (the date the 2009 amendments took effect) are grandfathered under s 3(1)(f) — they retain citizenship that they had before the amendments took effect. The bar does not apply retroactively.

Practical effect

A Canadian citizen who was born in Canada and moves abroad — their children born abroad are Canadian citizens (first generation). But those children's children, if also born abroad, are not automatically Canadian — they would need to immigrate to Canada and naturalise. This is the core policy objective of the 2009 reform: preventing the indefinite transmission of citizenship to generations with no real connection to Canada.

Information only. Nothing on this page is immigration advice or legal advice. Only an authorised representative (RCIC or immigration lawyer) may give immigration advice in Canada.

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