Everyone knows Australia’s big four banks are huge, accounting as they do for almost one quarter of the value of all the companies on the entire ASX.

LENDERS are kicking cash-strapped mortgage holders while they are down by jacking up interest rates for customers when they fail to meet repayments.

Sydney mortgage broker Luke Gardiner, who started his business just last year, is already overwhelmed with customers.

Hot on the heels of the Parliamentary inquiry into the Commonwealth Bank's financial planning division, Australia's major banks are under fire again.