Domino's Pizza or Retail Food Group, which owns Pizza Capers and Crust, could soon have a bigger slice of the takeaway pizza market by gobbling up collapsed rival Eagle Boys.

Australia's third-largest pizza chain's head office called in administrator SV Partners on Thursday, but insists its 130 or so franchisees will continue to trade while they try to sell the business.

Eagle Boys franchise numbers have halved in Australia in recent years. Credit:Max Mason-Hubers

Documents filed with the corporate regulator show the company either could not pay its debts or thought it might soon be unable to do so.

"For Eagle Boys customers, franchisees, employees and suppliers, it's 'business as usual' while the administrators' review is under way," Eagle Boys, founded in Albury NSW in 1987, said in a statement.