Call on chancellor of the exchequer, Alistair Darling, to urge world leaders to take action against tax-dodging businesses.
It is even more important that we keep up the pressure given how little concrete progress was made at November's G20 finance ministers meeting in Scotland.
Treasury minister Stephen Timms has recorded a personal video message to all our Big Tax Return campaigners.
He says your emails, letters and postcards have been 'very valuable' in establishing this issue on the agendas of the UK government and the G20.
Pinstriped pirates
Tax-dodging multinationals cheat the developing world out of at least $160bn each year.
This is money that ought to be helping millions of people out of poverty.
These unscrupulous businesses are basically acting like pinstriped pirates, removing vast sums from poor countries by disguising the profits they make, often by stashing them away in tax havens.
Video Big Tax Return guide
What we want
Christian Aid is calling for companies to declare the profits they make and the taxes they pay in every country where they operate.
In June, thanks to your campaigning, the UK government announced that it backed this call – a great start for our Big Tax Return campaign.
Now we need the chancellor to persuade the world’s most influential leaders to support country-by-country reporting, and to request that the International Accounting Standards Board adopt this standard.
We also want G20 leaders to set new rules that force tax havens to reveal automatically the identities of businesses and individuals holding funds offshore.
This would help developing country governments collect the right amount of tax from international companies doing business in their countries.
And it would mean they’d have more money for health, education and other essential services.
Email Darling now and urge him to pass on our message to the G20.
Take action
Write to the chancellor and ask him to push for new standards and agreements at the G20 to help stop tax dodging.