Companies can no longer survive inflation without passing on rising costs. Customers now demand precise product‑level cost breakdowns—material, labor hours, overhead, yield, and process actuals. Only companies whose financial and managerial accounting match as “One Truth” can justify price increases. Controllers must work on the front line with CEOs and sales, verify cost accuracy, and explain numbers directly to customers. Survival in an inflationary era depends on accurate

Many companies rely on Gross Margin and SG&A, but fixed costs hidden in COS distort the true economics of the business. Correct decision‑making requires separating variable and fixed costs and viewing profitability through Contribution Margin and total fixed costs, not Gross Margin.

This article explains why the theoretical production quantity in sand casting never matches the actual output and how this gap distorts defect rates, cost accounting, and production control. It introduces a practical method to determine true production quantity by measuring casting weight after shot blasting and linking it with batch IDs, enabling accurate, real‑time data for factory operations.

Costing must follow the production reality. In one‑off projects, labor drives value → use labor‑hour costing. In mass production, machines drive value → use machine‑hour costing. In foundries, use the pouring machine hours and actual good units to calculate true unit cost.