Annual volume by itself does not determine a production price. Two programs with the same annual demand can have very different economics when one uses twelve small releases and the other uses four larger batches. The comparison below separates recurring production cost, release-level cost, cycle-stock carrying cost, safety stock, and one-time program investment.
Your common demand assumptions
Build comparable release scenarios
Release structure A
- Calculated batch size
- units
- Average inventory proxy
- units
- Annual release cost
- Annual carrying cost
- First-year entered total
- First-year effective unit
- Ongoing entered annual total
- Ongoing effective unit
Release structure B
- Calculated batch size
- units
- Average inventory proxy
- units
- Annual release cost
- Annual carrying cost
- First-year entered total
- First-year effective unit
- Ongoing entered annual total
- Ongoing effective unit
Release structure C
- Calculated batch size
- units
- Average inventory proxy
- units
- Annual release cost
- Annual carrying cost
- First-year entered total
- First-year effective unit
- Ongoing entered annual total
- Ongoing effective unit
What the planner calculates
For each scenario, calculated batch size equals annual demand divided by releases per year. Average cycle stock is modeled as one-half of that batch, then added safety stock is included. Annual carrying cost uses the recurring unit price as the inventory-value proxy and applies the carrying rate you enter.
Questions to settle before choosing a batch size
Demand and inventory
- Which demand is firm, forecast, cancelable, or upside only?
- Who owns raw material, WIP, finished goods, and obsolete inventory?
- What safety stock is actually approved, and where will it be held?
- What shelf-life, revision, corrosion, packaging, or traceability limits apply?
Release and capacity
- What minimum release supports the quoted setup and inspection plan?
- When does lead time begin, and which buyer inputs start the clock?
- What forecast window is visible and what portion is firm?
- What happens when releases move, demand changes, or a revision supersedes inventory?
Turn the comparison into a quoteable program
Send the released model and drawing, annual demand, candidate release quantities, cadence, firm window, required delivery, inventory expectations, and quality flow-downs. Procut-CNC will review process fit, setup recurrence, material, tooling, inspection, outside processing, capacity, and commercial boundaries before proposing a program.