LOOMING debt and demographic crises have many governments searching for new revenue sources. Some governments have less room to raise taxes than others. An analysis by KPMG, a consultancy, compares effective tax rates—net of offsets—and social-security contribution rates across 81 countries. Unsurprisingly, European countries top the list. As a result austerity measures across much of Europe must focus on cutting spending. At just under 40%, the total burden of taxation in India is quite high relative to that in China. But a thin social safety net means that China's residents must save a high share of their disposable income as insurance, offsetting some of the growth effect of low tax rates. For low rates, nothing beats living in a banking centre, a petro-state, or (naturally) a tax haven.

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