GEELONG has posted a loss of almost half a million dollars despite consecutive top-four finishes.

The Cats finished $445,624 in the red despite increasing membership by more than 4,000 and lifting revenue by almost six per cent.

Last year, Geelong made a profit of $2.3million.

CEO Brian Cook said a lack of games of the club's home ground, along with depreciation of the venue, were reasons for the loss. 

"While the club recorded a significant operating profit, we finished with a net loss due to significant depreciation flowing from the assets built through the redevelopments at GMHBA Stadium," Cook told geelongcats.com.au.

"There are a number of factors that have contributed to this result. The finalisation of the redevelopment at GMHBA Stadium was a landmark moment for the club. The facilities are world class and open up new revenue opportunities.

"With only seven home games at GMHBA Stadium this year, we did not feel the full impact of the increased revenues. 

"The scheduling of nine home games at GMHBA Stadium in 2018 will assist further revenue growth."

The club’s operating profit before interest, depreciation and amortisation was $1,521,736.

Geelong fans supported their team as the club reached preliminary final weekend, falling short to Adelaide.

"We again had exceptional support from our members, recording a record with 56,577 passionate supporters signing up. We are anticipating a further increase in membership in 2018 and the renewals to date are tracking ahead of the same time last year," Cook said.

"We are also committed to making a significant and meaningful difference in our community. The club invested significantly into its 10 flagship community programs in 2017 and will again focus on our community impact in 2018.

"The club also took a step forward with the introduction of team in the VFL women's league in 2017. This was an important step in our club's history and we are looking forward to the continuation of the VFLW program in 2018 and the addition of an AFLW team in 2019."