Australia's black and red bank nearly doubled its statutory net profit to AU$3.2 billion during 1H21, a period where the company invested in a number of digitisation and automation projects.
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Westpac has raised its software capitalisation threshold before a project from AU$1 million to AU$20 million.
NAB has revealed it saw a further 30% reduction in over the counter and basic servicing transactions in its branches in the last year.
NAB's acquisition of 86 400 is expected to cost the bank AU$220 million.
Touting deposits and withdrawals can now happen 'in seconds'.
During the half year, net profit after tax dipped 24% to AU$490 million while cash earnings increased by 40% to AU$509 million.
The bank plans to combine 86 400 with its own digital bank, Ubank.
The neobank cites plans to focus on other areas, such as its US share trading product Dabble.
Meanwhile, NAB has partnered with Slyp to introduce in-app receipts for customers.
The acquisition is a strategic move for the payments company as it continues to make inroads in the digital space.