The net income of a unit trust must be allocated, i.e. applied for the benefit of unit holders, and is usually distributed at least annually. Most funds make distributions twice a year, some quarterly and income funds often monthly. Income may also be retained in the fund and added to the capital for the benefit of holders of accumulation units.

If you look at fund names they will usually have Inc or Acc after their name, which refers to if the income is paid out or not.