The Anti Austerity Alliance, People Before Profit have published what they say is a radical alternative budget.
Water charges, the local property tax and the Universal Social Charge would all be abolished and replaced with a landlord's tax, a new high earner's tax and increasing income tax rates for those earning more than €90,000.
They say 50,000 social housing units could be acquired next year and they want to reverse all welfare cuts, add 1,000 hospital beds and increase nursing numbers by 4,000.
AAA TD Paul Murphy says they want to raise at least a further €4bn from Corporation Tax.
He said: "We think that there should be the introduction of a new rate of tax for big business profits, for profits that come in over €800,000.
"That should be a doubling of the existing rate, so 25%.
"That wouldn't affect small businesses, but only affect big businesses."