Financial institutions, including South Shore Savings Bank, have begun expanding their Metavante relationships to include the new service, which enables consumers to make same-day or overnight bill payments. South Shore Savings Bank is headquartered in South Weymouth, Mass., and serves 15 locations along the South Shore of Massachusetts. Metavante can now enable financial institution-based online bill pay customers to make expedited payments to virtually any biller using their bank's Web site, helping minimize some concerns about late payment fees, service disruption or possible harm to credit ratings.