Spare Parts and Inventory

Inventory Carrying Cost

Inventory carrying cost is the annual cost of holding spare-parts inventory, including capital, storage, insurance, handling, deterioration, and obsolescence.

What this term means in maintenance

Inventory carrying cost is the annual cost of holding spare-parts inventory, including capital, storage, insurance, handling, deterioration, and obsolescence.

Cost elements

Carrying cost may include:

  • Cost of capital
  • Warehouse space
  • Insurance
  • Handling
  • Cycle counting
  • Damage
  • Shelf-life loss
  • Obsolescence
  • Security

Basic estimate

Annual carrying cost = Average inventory value × Carrying-cost percentage

Practical example

Average inventory value is 2,000,000 and the approved carrying rate is 20%.

Estimated annual carrying cost = 400,000

Maintenance context

High carrying cost must be balanced against stockout consequence and equipment downtime.

Common mistake

Reducing inventory based only on carrying cost can remove critical protection.

Keep exploring connected CMMS, reliability, and maintenance planning terms.

Glossary FAQs

What is inventory carrying cost?

The annual cost of capital, storage, insurance, handling, damage, shelf life, and obsolescence.

How is it estimated?

Average inventory value multiplied by an approved carrying-cost percentage.

Should carrying cost drive all stock reduction?

No. Stockout and downtime risk must be considered.

Turn Maintenance Definitions Into Action

MaintBoard helps plant and facility teams move from scattered maintenance records to organized work orders, preventive maintenance schedules, spare parts control, inspections, calibration, and audit-ready history.