The warning comes ahead of Mondays Autumn Budget, in which Chancellor Philip Hammond is set to lay out his vision for Brexit Britain.
Campaign group Long Live the Local has warned British pubs are under “enormous pressure” and a price increase could see thousands of them shut down.
A spokesman said: “Today one in every three pounds spent in pubs goes to the taxman.
“The government collects £3.5 billion every year in beer duty, as well as almost £10 billion in other taxes on pubs and brewers.
“When beer duty increased year-on-year between 2008 and 2013, the impact on the beer and pub sector was catastrophic.”
Long Live the Local
“Beer duty is putting pubs under enormous pressure; every day pubs are closing their doors for good – and its about to get worse.
“The industry needs a cut in beer duty, but the government is planning an increase.
“When beer duty increased year-on-year between 2008 and 2013, the impact on the beer and pub sector was catastrophic.
“Within 5 years there was a 24% decline in beer sales, 5,000 pubs closed and 58,000 people lost their jobs. Now we need to fight.
CASTROPHE: Campaigners have warned thousands of jobs could be at risk (Pic: DS)
“Our pubs are a British success story. They have been at the heart of British culture for generations and remain one of our most valuable assets.
“The pubs and brewing industries combined create jobs, encourage tourism, and most importantly provide a vital place for communities to gather.”
The British Beer and Pub Association (BBPA) backed the campaign, saying: “We are proud to support Long Live the Locals campaign to decrease beer duty.
PRESSURE: Mr Hammond has been warned to cut beer duty by fellow Tories (Pic: GETTY)
“We will continue supporting our local communities and keep pubs from closing.”
Earlier this month, BBPA presented a letter signed by 56 Tory MPs demanding beer duty be brought down.