the tax thingy

tax.cs

public decimal GetTaxes(decimal salary)
{
	decimal tax = 0;

	var progressiveTaxation = new[] { 0.1m, 0.14m, 0.23m, 0.3m, 0.33m, 0.45m };
	var progressionSlices = new[] { 5070 - 0, 8660 - 5070, 14070 - 8660, 21240 - 14070, 40230 - 21240, decimal.MaxValue };

	var progression = 0;

	while (salary > 0)
	{
		var taxedSlice = salary - progressionSlices[progression] > 0 ? progressionSlices[progression] : salary;
		tax += taxedSlice * progressiveTaxation[progression];
		salary -= taxedSlice;
		progression++;
	}
	return tax;
}

yeah, looks unbeatable