Perhaps you need to think about working up something like this for each item on your equipment inventory. smile

With reference to the above post some of the values indicated depend upon global variables (set up elsewhere) such as:-

Price inflation % (general annual inflation rate)
- typically 3 %

Depreciation % (write-down per year)
- typically 7 %

Equipment inflation % (annual increase in replacement cost)
- typically 3 %

Equipment life years (expectancy)
- typically 20 years

PS: I posted that image in the Gallery as I could not find the Attachment Manager at this thread!

If you don't inspect ... don't expect.