Accounting earnings can often disguise the true health of a business, so investors rely on Free Cash Flow to reveal the real economic engine underneath. This chapter will take you beyond standard statements by teaching you how to forecast capital expenditure, manage working capital adjustments, and project sustainable growth drivers. By the end, you will have the precision needed to model accurate terminal values and build the robust data foundations essential for professional valuation analysis.

If Net Income is a company's reputation—a carefully curated story told by accountants—then Free Cash Flow is the actual money in the bank. You can't pay employees or buy equipment with a reputation; you need hard cash. This gap between 'accounting profit' and 'operating cash' is known as the discrepancy, and it exists because accounting rules often recognise income and expenses that haven't actually moved any money yet.

The bridge between these two worlds is the Statement of Cash Flows. While you are likely familiar with how the Income Statement tracks revenue and costs over a period, it includes several 'ghost expenses' that reduce your profit on paper but leave your bank balance untouched. To get to the truth, we must perform a series of adjustments to Net Income.

The most significant adjustments are Depreciation and Amortisation. These are non-cash charges that spread the cost of an asset over its useful life. On the Income Statement, they appear as expenses that lower taxable income, which is great for reducing tax bills. However, since the company didn't actually write a cheque for depreciation this year, we must add it back to Net Income to see the real cash generated by operations.

While adding back these charges gets us closer to the truth, it doesn't tell the whole story. A company can be profitable and have high depreciation add-backs, yet still be broke because its money is tied up in unpaid invoices or piles of unsold stock. In the next section, we will look at Net Working Capital to see how these balance sheet movements can trap or release your hard-earned cash.