Okay,
this table from the BEA seems to be their source. (1102.5 ÷ 12026 ≅ 9.2%)
This document from the BEA defines "Personal Current Taxes" as:
[T]axes that are paid by households [including] Federal and state income taxes and state and local taxes on property other than homes, motor vehicle license payments, and other personal license payments. State and local property taxes on homes are excluded from this measure because they are treated as taxes on production.
It does exclude some taxes, but it still seems quite wrong to me.