Commonwealth Bank's growing business banking satisfaction levels.

The Commonwealth Bank (CBA) is surging ahead of the other Big Four banks when it comes to small business bank account satisfaction.

The CBA has been fast increasing its small business banking satisfaction levels, from 6.8 out of 10 back in May 2011, to a record highest ever level  of 7.6, according to the findings in the latest DBM Consultants' Business Financial Services Monitor.

Both Westpac and the NAB also showed signs of improvement in their business customer satisfaction levels, Westpac lifting its score to 7.4 and the NAB to 7.2.

The ANZ remained in fourth place with a score of 7.0, although showing signs of recovery after a tough 2012. ANZ's satisfaction levels took a sharp drop after shifting its monthly interest rate decisions away from the Reserve Bank of Australia's board meeting, according to the News Limited Network.

"It will be interesting to see if ANZ's pledge earlier this month that it will lend $1 billion to new businesses over the next year will impact postively on its business customers' satisfaction levels," said managing director of DBM, Dhruba Gupta.

Across the market, including micro, small, medium and large businesses, both Westpac and Commonwealth Bank held joint first place in business customer satisfaction with a score of 7.4, ahead of the NAB's average rating of 7 and ANZ's 6.9.

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