To my surprise, the IRS sent me a reimbursement on my tax return because, they stated, "the tax rates on Qualified Dividends and Capital Returns are generally lower than the standard rates. It appears your tax was not computed using these rates or the amount of tax was computed incorrectly. (211D)"
Since my dividend and capital returns information were entered automatically from my Vanguard accounts and then computed using my TurboTax, why would TurboTax use tax rates the IRS says are too high?