standard costs

A recipe tells you a loaf of bread should take 500 grams of flour and ten minutes of kneading. That is what it ought to take if everything goes normally. When you actually bake, you can compare what you really used to that expectation and notice if you wasted flour or took too long. Standard costs are a business's recipe for cost: what each unit of product ought to cost in materials, labor, and overhead under efficient, normal conditions.

Formally, a standard cost is a carefully predetermined cost per unit, set in advance, that serves as a benchmark. It has two parts for each input: a standard price (or rate) and a standard quantity. For direct materials, you might set a standard of 2 kilograms of wood per chair at 5 per kilogram, so the standard materials cost is 10 a chair. For direct labor, perhaps 0.5 hours per chair at 20 per hour, a standard of 10. Add a standard overhead amount and you have the total standard cost of one chair. Standards are usually 'attainable' — tight but realistically reachable — rather than 'ideal' (perfection with zero waste), because impossible standards discourage people.

Standard costs matter because they make control by exception possible: instead of scrutinizing every transaction, managers compare actual costs to standards and investigate only the meaningful gaps, called variances. Standards also simplify bookkeeping (inventory can be recorded at standard cost) and help set selling prices. The honest caveat is that standards can become outdated as prices and methods change, and that overly harsh standards or blind insistence on hitting them can push staff to cut corners — so standards should be reviewed and used as a guide, not a club.