The balance sheet is the SNAPSHOT view of your fintech at a single instant. Assets (what you own) = Liabilities (what you owe) + Equity (what's left for shareholders). Like the income statement, it's a SQL query, but instead of summing over a date range, you sum balances AS OF a single date. The classic fintech-engineer mistake: treating the balance sheet as 'the sum of all journal entries since the beginning of time.' That works mathematically but is computationally absurd at scale. Real systems use SNAPSHOTS at period close (lesson 41) and reconstruct point-in-time balances as 'snapshot + deltas since.' This lesson posts a couple of representative entries that contribute to each section of the balance sheet.