1 Therefore, a deficiency of vitamin B6 may result in symptoms of anxiety and depression due to inhibition of serotonin synthesis. 2  In a study of individuals suffering from frequent anxiety attacks, patients were given vitamin B6 (125mg, 3 times daily) and tryptophan (2 grams daily).
Need an updated list of Hawaii sales tax rates for your business? Download our Hawaii sales tax database! The Kapolei, Hawaii sales tax rate of 4.50% applies to the following two zip codes: 96707 and 96709. There are approximately 29,472 people living in the Kapolei area. Remember that zip code boundaries don't always match up with political boundaries (like Kapolei or Honolulu County), so you shouldn't always rely on something as imprecise as zip codes to determine the sales tax rates at a given address.
Personal income tax. Hawaii collects income taxes from its residents at the following rates. For single taxpayers: 1  1.4 percent on the first $2,400 of taxable income. 2  3.2 percent on taxable income between $2,401 and $4,800.3  5.5 percent on taxable income between $4,801 and $9,600.awaii imposes an estate tax on property left by decedents after Jan. 25, 2012. The rates range from 10 percent on estates of up to $1 million to 15.7 percent on estates of more than $5 million. The full estate tax rate schedule is found at the end of Form M-6, Hawaii Estate Tax Return.