The advertising blitz will also extend to KBC's deposit offering, which has already seen customer funds grow from €4bn at the start of the year to €6bn at year-end.
The deposit boost is in sharp contrast to recent outflows of funds at Irish-owned banks including AIB, Anglo Irish Bank and Bank of Ireland.
"It's still a competitive market out there, but we're part of a very substantial entity," said Mr Reynolds. "If we're doing our job properly, we should be able to attract deposits".