Color of Diff Oil. I replaced my differential fluid at 60k miles, I'm now at 71k and today when getting my oil changed the guy showed me the oil and it was dark brown in the rear while the front was still the clearish-yellow like it was when I put them in.
The average tax rate is the tax rate you pay when you add all sources of taxable income and divide that number into the amount of taxes you owe. In other words, you can calculate your average tax rate by dividing your total tax obligation by your total taxable income.
Despite statutory rates hovering near 39% for the last 25 years, effective tax rates have been gradually decreasing (see Exhibit 2). At 30%, the current S&P 500 median effective tax rate is almost 10 percentage points below the statutory level, and close to the global statutory average. The aggregate tax rate has averaged 33% over the past 10 years and was 26% over the past four quarters.