The one equation everything hangs off
A balance sheet is a snapshot on a single day of what a company owns and owes. It always obeys one identity:
Assets = Liabilities + Shareholders' equity.
Rearranged, that is the only line that matters to you as a part-owner: equity = assets minus liabilities — the book value, what would theoretically be left for shareholders if every asset were sold at its stated value and every debt repaid.
The three blocks:
- Assets — cash, inventory and receivables (current, i.e. turn to cash within a year) plus property, plant, equipment and intangibles (non-current).
- Liabilities — payables and short-term borrowing (current) plus long-term debt and pension obligations (non-current).
- Equity — share capital plus accumulated retained profit.
UK-listed companies report this in their annual results under IFRS. You do not need to model it. You need to read four things from it.