the profit & loss (income statement)
The P&L shows revenue minus expenses over a period. It's the statement most owners watch, and it answers the profitability question directly: did we make money this month, this quarter, this year? The key figure is gross margin — revenue minus direct costs — which tells you whether the core business is profitable before overhead.
A common trap: a healthy net income with a thin or negative gross margin. If you're only profitable because you cut overhead to the bone, the core business isn't working and the net income is unsustainable. Watch gross margin first, net income second.
