(Adds details about the notes issue)
Feb 17 (Reuters) - National Australia Bank Ltd NAB.AX said on Monday it would raise about A$750 million ($503.93 million) to refinance debt, as it seeks to meet toughened capital requirements.
NAB said that once issued, the capital notes would qualify as additional Tier 1 capital for the group.
NAB's capital levels have come under pressure because of the A$2.07 billion it had to pay out to compensate aggrieved customers after an inquiry last year revealed widespread misconduct in the financial sector.
The country's third-largest lender also launched the resale of capital notes worth A$750 million.
Last week, the lender posted first-quarter profit of A$1.65 billion, little changed from a year earlier. = 1.4883 Australian dollars)