Bremer Financial Corp. of St. Paul is planning to offer its small-business customers an online bill payment service from Fiserv Inc.'s CheckFree.

Fiserv announced Tuesday that the $7.5 billion-asset Bremer would use its CheckFree Small Business service.

Bremer has used the Brookfield, Wis., vendor's core processing software since 1986 and began using consumer online banking software from CheckFree in September, three months before Fiserv bought the Atlanta vendor.

David J. Whitaker, a vice president and Bremer's general manager for e-commerce, said in a Fiserv press release that the small-business service will enable his company to offer several new payment and invoicing capabilities and will be "a valuable tool to help clients efficiently manage their accounts payable process."