Definitions by Asbjørn Sloth Tønnesen
Windows tax
The cost of having to pay for a unneeded Windows license, is often referrer to as Windows tax, primarily in the open source community. However by the Windows OEM EULA, you can get your Windows license refunded, if you can't/don't accept the EULA terms.
Windows tax by Asbjørn Sloth Tønnesen May 30, 2008