New York City tacks on an extra levy of $1.50.

VOA: standard.2010.08.11

The extra levy affects only a few high-income couples but in very different ways.

FORBES: A New Marriage Penalty For High Earning Couples -- And A Bonus For Some

All big businesses in Northern Ireland may have to pay an extra levy to fund the Small Business Rate Relief Scheme.

BBC: NI 'Tesco tax' extended to hit big business

Some states levy an extra charge to cover welfare payments to the mother.

ECONOMIST: America's jobless men: Decline of the working man | The