Green’s Dictionary of Slang

(Aus.) a debt.

1996		J. Byrell Lairs, Urgers & Coat-Tuggers 88: [He] took off [...] to do some settling and try to collect on some outstanding owes.
2011		J.J. DeCeglie Drawing Dead [ebook] Place to hide while you get together some scratch to pay the owe you should have never got so deep into anyway.