The Panama Papers finally show what we've all suspected: that the rich and powerful actively avoid paying tax like you and me. 

Thousands of politicians and public officials are mixed up in this -- including 12 current and former world leaders.

But early analysis also shows that they weren't doing this alone: our banks could very well be involved in helping people set up "shell companies" to hide their incomes. 

We need to get to the bottom of this and hold those companies to account. Can you donate to help us force everyone to pay their fair share of tax?

You can't underestimate the size and scale of this leak.

The law firm -- Mossack Fonesca -- was one of the world's most secretive. Eleven million documents finally prove the size and scale of offshore tax havens used by the world's wealthy.

All of us will be missing out on vital public services to the tune of billions. 

A core part of the SumOfUs mission is to fight back against this massive, widespread tax avoidance. In our countries, we’re facing cut-backs to healthcare, colleges, social care, and our justice system.

Who knows how much better we could all have it if our wealthy and powerful were forced to pay their fair share like the rest of us.

We have two huge opportunities:

• We can expose the banks that are helping the evasion take place
• And then we can ramp up the pressure on world leaders, who are meeting next month in a summit about offshore banks

We can force real change by getting our governments to close these loopholes. But we really need your help! 

We don’t accept any money at all from corporations or governments -- this keeps us accountable only to our members. If you contribute now, we can get to the bottom of this tax scandal and finally hold those responsible to account.

Please, will you chip in to make sure everyone pays their tax?