Does divorce end a sponsor's undertaking obligations toward a spouse they already sponsored?

No, divorce does not end a sponsor's undertaking obligations toward a spouse they already sponsored. The undertaking is a separate legal commitment made to the government, independent of the marriage itself, and it continues to run for its full length regardless of what later happens between the couple, including separation or divorce.

This is one of the most misunderstood parts of spousal sponsorship. People often assume that once a marriage legally ends, so does any related financial responsibility, but the undertaking was signed as a promise to support the sponsored spouse (and to repay certain government social assistance paid to them) for the entire undertaking period, which runs for a fixed number of years from the day the sponsored person became a permanent resident. A divorce doesn't reset, pause, or cancel that clock.

This can come as an unwelcome surprise to sponsors going through separation or divorce, especially if the relationship ended on difficult terms. If you're a sponsor whose marriage has ended and you're unsure what obligations you still carry under a signed undertaking, it's important to get individual legal advice so you understand exactly what continues to apply to your situation and for how long.