Ticketline (UK), which was placed into liquidation in November, owes £45,611 ($63,200/€51,600) to the Cardiff Council and £22,470 to the National Museum Wales (pictured).
According to the BBC, the council and museum said they are liaising with the liquidators.
The Cardiff-based firm is distinct from the larger company Ticketline, which is a separate business.
The agency, which offers tickets to concerts and sporting events as well as excursions and short breaks, was said to have “suffered a downturn in trade.”
The Welsh firm reportedly has debts totalling £391,364, but only £83,326 is available to unsecured creditors, leaving a shortfall of £309,037. Its other creditors include HMRC, to which it owes £27,787, the BBC reports.
A spokesman for National Museum Wales said: “All tickets for museum events bought via Ticketline (UK) were honoured… We are working with [the liquidators] to recover outstanding amounts.”
A Cardiff council spokesman said it will not know if the Ticketline debt will be written off until the liquidators have officially submitted their report: “We are liaising with the liquidators to get this information as soon as it is available.”
The liquidators, CVR Global, said creditors will receive a dividend from the liquidation process, subject to available funds.