Charlotte Church has said that she'd pay a very high rate of tax if it meant other people would be better off - and added that inequality made her "angry as the hulk".
The former opera singer, who is strongly opposed to Tory policy, was speaking ahead of an anti-austerity rally to take place on 20 June in London.
At a press conference for The People's Assembly, Church said she'd pay up to 70 per cent tax if it would make a difference.
"I've paid all my taxes since I was six years old," Church said. "I would happily pay more. I would totally be happy if it was raised to 60 or 70 per cent."
Church added that you didn't need to be poor to back the cause. She said: "Being poor is not a prerequisite for empathy."
Best General Election 2015 quotes
Best General Election 2015 quotes
1/10 1. "Am I tough enough? Hell, yes, I'm tough enough."
Ed Miliband bats away suggestions he would be too weak on the international stage. It likely to go down as one of the quotes we remember this election by.
Matthew Lewis/Getty Images
2/10 2. "If I'm getting lively about it, it's because I feel bloody lively about it."
David Cameron attempts to prove how passionate he is about wanting a second term as Prime Minister after Tory donors criticised his lack of enthusiasm.
3/10 3. "Oh it's crats? I thought it was Liberal Demo-cats"
Reality TV star Joey Essex is taught a thing or two during his meeting with Nick Clegg.
4/10 4. "Brain fade"
Green party leader Natalie Bennett gave what was described as the "worst political leader's interview ever" on LBC Radio as she fails to answer how the Greens would pay for its ambitious housing policies.
5/10 5. "We're a shining example of a country where multiple identities work. Where you can be Welsh and Hindu and British, Northern Irish and Jewish and British, where you can wear a kilt and a turban, where you can wear a hijab covered in poppies. Where you can support Man Utd, the Windies and Team GB all at the same time. Of course, I'd rather you supported West Ham"
David Cameron experienced his own brain fade when he forgot which football team he supported.
6/10 6. “This is a real career-defining … country-defining election that we face in less than a week’s time”
The Prime Minister made another gaffe when he made it sound like the election was all about himself.
7/10 7. “Ed Miliband stabbed his own brother in the back to become Labour leader. Now he is willing to stab the United Kingdom in the back to become prime minister.”
Defence Secretary Michael Fallon launched a vicious personal attack on Ed Miliband.
8/10 8. "Ajockalypse Now."
The colourful term used by Boris Johnson to describe a Labour government propped up by the SNP.
JUSTIN TALLIS/AFP/Getty Images
9/10 9. “The SNP are openly racist. The anti-English hostility, and the kind of language that is used about and towards English people, is totally extraordinary.”
Nigel Farage launches an attack on Nicola Sturgeon and her SNP party.
10/10 10. "Terms are like Shredded Wheat. Two are wonderful, three might be too many."
David Cameron rules out a third term as Prime Minister.
The singer was an outspoken supporter of the political left during the run-up to the General Election, saying the Conservative party used fear tactics to win votes.
During the rally press conference, she continued her attack on the party: "We will see a broad coalition against the vicious attacks from this vindictive Government.
"It hasn't taken the Conservative government very long to attack unions by planning ballot thresholds, when it only had the support of 24% of the electorate."
However, Church attracted criticism, which she responded to on Twitter.
I'm disappointed at the vitriol directed my way, if I gave 70% of my earnings to HMRC voluntarily, not only would it not last long as our...Charlotte Church (@charlottechurch) June 4, 2015
Public services cost 100s of billions to fund but I doubt it would encourage the richest in this country to get a conscience and follow suitCharlotte Church (@charlottechurch) June 4, 2015
I have no ulterior motives. The injustice and inequality in society that is pushed further by this government makes me as angry as the hulk!Charlotte Church (@charlottechurch) June 4, 2015