As mortgage growth slows in Queensland and other state markets across Australia, Suncorp has moved to stoke its overall loan volumes by aggressively repricing its line of business credit products.The bank notified brokers last week that it had begun to undercut rival SME lenders on secured loans above A$200,000.For borrowers with a residential security, Suncorp says it is prepared to push business rates on its Business Essentials loans to as low as 4.39 per cent.The pitch means that Suncorp is undercutting most other bank lenders in the market, including Bankwest, which is advertising SME loans at 4.7 per cent and NAB's promotion of a 5.19 per cent offer.Suncorp is sharpening its pricing offers to small business borrowers as growth in its mortgage book slows.In the 12 months to the end of October, official APRA data shows that the bank's home lending expanded by only $1.1 billion or 3 per cent to $42.5 billion.Suncorp has a chequered history in SME and commercial lending, but appears to be making a concerted effort to reassert its presence in the credit segment to regain momentum in its banking operation.Apart from its sharp pricing, the bank has also removed annual fees on SME loans to attract new customers.This gives it a competitive edge over Bankwest and NAB, which each continue to levy annual fees of $360 and $240, respectively.Suncorp's banking division is battling to maintain earnings momentum.Rising costs, the slowdown in housing lending and higher impairment losses undermined the profitability of Suncorp's banking activities in the 12 months to the end of June.Annual net earnings generated through banking fell 5.3 per cent or $21 million to $375 million.