Partner visa application fees will be increased for applications lodge on or after 1 January 2015. The application fee for an onshore partner visa is currently $4,575 and this will increase to $6,865.
For offshore partner visas and prospective spouse (fiance) visas, the fees will increase from $3,085 to $4,630.
These represent a 50% increase in lodgement fees. It appears that the increase is not related to the actual cost of processing partner applications, but instead a measure to "fund whole-of-government policy priorities".