Can old sponsorship debt still affect a sponsor after their undertaking period has already ended?

Yes, old sponsorship debt can still affect a sponsor even after the undertaking period has technically ended, as long as the debt arose from social assistance paid to the sponsored person during the time the undertaking was actually active. The end of the undertaking period stops any new obligations from accruing going forward, but it does not automatically erase debt that already built up while the undertaking was in effect.

This surprises a lot of sponsors, who understandably assume that once the fixed number of years is up, everything connected to the sponsorship is behind them. In reality, if the government paid covered assistance to the sponsored person during the active undertaking period and is pursuing repayment, that claim can still proceed and be collected even after the undertaking's timeline has technically run out — the debt itself doesn't have its own separate expiry just because the undertaking that created it has ended.

If you're a former sponsor and are facing a repayment claim for assistance paid years ago, don't assume that simply pointing to the fact that your undertaking period is over will resolve the issue on its own. Speak with an immigration lawyer promptly to understand whether the debt is properly connected to your undertaking and what your options are for responding to the claim.