Pubs would be able to offer lower prices if duty on draught beer were cut, but maintained in supermarkets, says the Campaign for Real Ale (CAMRA) group.
But these policies are currently blocked by EU, with Brussels’ rules barring preferential pub rates.
The European Commission has failed to update its directive on excise duty since 1992.
Ahead of the General Election, politicians should do more to encourage to people into their local by reducing VAT on licensed premises and reducing business rates, said CAMRA.
Punters who drink in pubs have more friends, are happier and more engaged with communities, separate research has showed.
Wetherspoons chairman Tim Martin has echoed calls for the Government to change tax policies that currently favour stay at home drinkers and dinner parties.
He told the MailOnline: “CAMRA is right to try and use this opportunity to create political support for pubs.
“Pubs and supermarkets should be taxed equally – supermarkets don’t need tax breaks.”
Tax breaks on lower strength ale and lagers could also be widened, to reflect the average strength of a pint at the pub, according to CAMRA.
Draught beers below 2.8 per cent alcohol currently receive a 50 per cent duty discount – the campaign group wants the threshold raised to 3.5 per cent.
CAMRA chairman Colin Valentine said: “Pubs are a uniquely British institution that showcase our nation’s brewing tradition and provide an essential community facility for those that use them.
“It is therefore crucial that beer drinkers and pub-goers are not left behind when it comes to negotiating Britain’s future over the coming years.”