The office of Governor-General Sir Peter Cosgrove is pleading for more cash after its eighth year of failing to make ends meet, warning the integrity of official honours could be put at risk without a funding injection.

Citing a surge in demands on the Governor-General, including a spike in the number of people applying for official Australian honours, his staff are in talks with the office of Prime Minister Scott Morrison and Finance Minister Mathias Cormann for a funding boost.

Governor-General Sir Peter Cosgrove (right) with Prime Minister Scott Morrison. Credit:Alex Ellinghausen

In the last financial year, the Governor-General's office was over its $15 million budget by $332,000, prompting the department to note it was facing "ongoing budget viability issues".

The last time the office met its budget was in 2009-10 when the Governor-General was Quentin Bryce.