These days a single regional FO is going to be at the 9.3% marginal rate. While on probation their first year.

California - Single Tax Brackets
Tax Bracket Tax Rate
$0.00+ 1%
$8,015.00+ 2%
$19,001.00+ 4%
$29,989.00+ 6%
$41,629.00+ 8%
$52,612.00+ 9.3%
$268,750.00+ 10.3%
$322,499.00+ 11.3%
$537,498.00+ 12.3%
$1,000,000.00+ 13.3%
California - Married Filing Jointly Tax Brackets
Tax Bracket Tax Rate
$0.00+ 1%
$16,030.00+ 2%
$38,002.00+ 4%
$59,978.00+ 6%
$83,258.00+ 8%
$105,224.00+ 9.3%
$537,500.00+ 10.3%
$644,998.00+ 11.3%
$1,000,000.00+ 12.3%
$1,074,996.00+ 13.3%