The Communist Party says a wealth tax would held cut the deficit
The Communist Party is due to launch its manifesto with a pledge to "drop the big lie about spending cuts and make the fat cats pay".
General Secretary Robert Griffiths will attack the three main parties over the "big lie" that large reductions in public services are needed.
He will add: "Taxing the super-rich and big business super-profits would slash the deficit almost at a stroke."
The party says that it will stand six candidates in the election.
It argues an extra £91bn can be made available by imposing a wealth tax on the richest 10%; introducing a windfall tax on the energy, banking and retail monopolies; a levy on City speculation; withdrawing troops from Afghanistan and scrapping the replacement for Trident.
The manifesto will demand the enforcement of equal pay for women as well as increases in pensions, benefits and the national minimum wage.
At the launch, women's organiser Mary Davis will also criticise the government over its failure to halve child poverty
The party's candidates will be Steve Andrew in Sheffield South East, Robert Griffiths in Cardiff South and Penarth, Martin Levy in Newcastle East, Marc Livingstone in Glasgow North West, Gerry Sables in North Devon and Ben Stevenson in Croydon North.