Tax justice is a massive issue worldwide. Never before has there been so much wealth, and yet even the world's richest countries seem to lack public finances to fund the most basic needs of their citizens. It is a great paradox of our time. This book argues that global wealth inequalities need to be addressed in order to achieve lasting social, economic development in all countries. There will simply never be enough finances to provide welfare for all if the rich continue to evade taxes, and large companies shift profits out of poor countries. The authors show how we can develop new forms of international solidarity to tackle this -- and keep wealth within countries that need it. They detail how money is wasted and lost, and how the global finance system ends up taking money away from the areas that need it most.