In terms of calculating yearly cash flows, the formula I have been using is
After Tax Operating Cash Flow: (S-C) (1-T) + (TxD).
However, going through the EOC CFA Questions, I notice that sometimes small twists in the wording of the question changes this. Sometimes the Depreciation is just added straight back without being multiplied with the tax rate first. Why? Could anyone please help explain this? Feel free to really dumb it down, thanks a lot for the help.
First Example:
Invests $400 000 of fixed capital. Depreciated straight line over 10 year life.
First example you have (Sales - Cost of Sales) x (1-T) … you haven’t accounted for depreciation yet, which will lower your taxable income, and therefore lower your cash taxes, there’s a tax shield benefit so you have to account for it by taking Depreciation x T, or $40K x 30%. In this case the investment is $400k which will depreciate over 10 years (depreciation being $40K).
Second example you have (EBIT) x (1-T) … depreciation has already been fully deducted in EBIT, but because depreciation is a non-cash expense, you add back the full amount $50. In this case the investment is $100 which will depreciation over 2 years
Third example you have earnings after tax … depreciation has been deducted, and taxes have been accounted for, but just like example two, because depreciation is a non-cash expense, you add back the full amount $40K.
Be careful about what information you are given… Sales & Cost of Sales aka Gross Profit, or EBIT.
The “formula” is the same, it’s just manipulated algebraically depending on the information you are given.
bullet point #4: Operating Income before taxes is basically the same as EBIT so yes you add back full depreciation amount.
I wouldn’t advise you to think of it as “rules”. All you have to do is follow the basic structure of an income statement. Understand the structure and it will be easier to understand what calculation to perform
Sales - Cost of Sales = Gross Profit - G&A = EBITDA - Depreciation & Amortization = Operating Income before taxes (EBIT) - Interest Expense = Income or Earnings before taxes (EBT) - Tax = Net Income