How to calculate Tax Income rates

private decimal CalculateTax(decimal income)
{
    //•10% on taxable income from $0 to $8,500, plus
    //•15% on taxable income over $8,500 to $34,500, plus
    //•25% on taxable income over $34,500 to $83,600, plus
    //•28% on taxable income over $83,600 to $174,400, plus
    //•33% on taxable income over $174,400 to $379,150, plus
    //•35% on taxable income over $379,150.
    decimal incomeTax = 0;
    CalculateTaxForBracket(379150.0m, .35m, ref incomeTax, ref income);
    CalculateTaxForBracket(174400.0m, .33m, ref incomeTax, ref income);
    CalculateTaxForBracket(83600.0m, .28m, ref incomeTax, ref income);
    CalculateTaxForBracket(34500.0m, .25m, ref incomeTax, ref income);
    CalculateTaxForBracket(8500.0m, .15m, ref incomeTax, ref income);
    CalculateTaxForBracket(0.0m, .10m, ref incomeTax, ref income);

    return incomeTax;
}

private void CalculateTaxForBracket(decimal taxBraketFloor, decimal taxRate, ref decimal calculatedTaxes, ref decimal remainingIncome)
{
    if (remainingIncome > taxBraketFloor)
    {
        calculatedTaxes = calculatedTaxes + (remainingIncome - taxBraketFloor) * taxRate;
        remainingIncome = taxBraketFloor;
    }
}