National MP Melissa Lee had told NZ On Air she believed her company was entitled to money she is now being told to pay back.
Ms Lee, a list MP, was National's candidate in the June 13 Mt Albert by-election and during the campaign faced allegations that her television production company Asia Vision Ltd had misused taxpayer funds for political purposes.
NZ On Air cleared her of those allegations but in the process uncovered $80,000 of unspent contingency funds that should have been refunded.