When a business buys a building, a fleet of lorries, or a piece of manufacturing equipment, it plans to use that resource for many years. The price tag on that asset isn’t just the invoice amount — it includes all the costs of getting it ready for action. And over time, we have to decide whether to keep showing it at original cost, revalue it, or even write its value down if it has been damaged. This chapter walks you through those four big decisions: initial cost, later measurement, capitalising borrowing costs, and impairment.