"The paper edition has been closed" since Friday, said a spokeswoman for the strongly conservative newspaper, which was founded in 1989 and employs about 60 people.
"The newspaper will continue, but online -- that is what we will focus on," the spokeswoman told AFP.
She was unable to say what the impact would be on jobs.
La Gaceta launched as an economic paper in 1989 before converting to general news, part of the Intereconomia media group that also runs a television channel and a radio station.
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The Madrid Press Association, a journalists' body, says 284 media organisations have disappeared and 11,151 jobs been lost in the sector since 2008. That includes 73 media organisations and 4,434 jobs in 2013 alone.
The Federation of Journalists' Associations of Spain estimates the job losses at 10,500 since 2009.