The SOE declared a $5 million dividend to the government, unchanged from a year earlier.
Revenue from the mail and logistics unit fell 7 percent to $713 million, though the division turned a profit of $10 million compared to a loss of $38 million a year earlier.
Roche said sales from packages and parcels exceeded mail for the first time in the period, which he expects to continue as more people buy international retail goods over the internet.
"The cross-over in terms of revenue from the dominance of letters into parcels is incredibly significant for us," he said.
Revenue from the financial banking services gained 7.4 percent to $479 million, while non-banking financial services revenue slipped 6.3 percent to $45 million.
NZ Post injected $40 million of equity into Kiwibank, which Roche said was a long-term investment.
Last year, NZ Post said it would be able to meet Kiwibank's capital needs for the next few years, primarily to meet regulatory requirements for the lender to hold more top tier capital on its books and to overhaul its business systems.
The SOE has $200 million of bonds listed on the NZX debt market. The notes, which pay annual interest of 7.5 percent, last traded at a yield of 5.85 percent, according to NZX data.