Long-term capital gains and qualified dividends are taxed at lower rates than interest earned on a bank account (if any these days) or wages from a job.

FORBES: Marginal Tax Rates Matter More Than Average Tax Rates

Allowing for the effect of transferring the interest income that the Bank of England has earned as a result of quantitative easing, that measure of borrowing has actually fallen for the remaining years of the Parliament.

BBC: The Bank, the OBR and Mr Osborne

Until this year, ministries kept around 1 trillion escudos in bank accounts, where they earned a lower rate of interest than the yield on government bonds.

ECONOMIST: The public sector needs slimming down

In 2009, excess bank reserves grew through banks' preference for liquid assets, and the certain (though low) interest earned by deposits at the Federal Reserve.

FORBES: Magazine Article