What happens to a sponsorship undertaking if the sponsored person permanently leaves Canada after landing?

A sponsorship undertaking does not automatically end just because the sponsored person permanently leaves Canada after becoming a permanent resident. As a promise made to the government, the undertaking generally continues to exist on its original timeline regardless of where the sponsored person is physically living.

In practice, though, the undertaking becomes most relevant when the government has actually provided the sponsored person with covered social assistance that could later be claimed back from the sponsor. If someone has permanently left Canada, they're generally less likely to be receiving Canadian social assistance in the first place, which can reduce the practical chance of a repayment claim arising — but this isn't a guarantee, and it doesn't mean the underlying obligation has been cancelled or waived.

It's important not to assume that a sponsored person's departure from Canada quietly closes out the sponsor's responsibilities. The undertaking remains a live legal commitment for its full length, and circumstances can be more complicated than they first appear, especially if the person travels back and forth or the situation changes over time. If you're a sponsor in this situation, speak with an immigration lawyer to get a clear, individual picture of your ongoing obligations.