Depreciation Factor Table - Industrial Equipment

​2025 Schedule of Percentages Applied to Historical Costs in Estimating ​​Value of Industrial Equipment​​​​

Each depreciation percentage listed below is the result of multiplying an equipment index factor by a percent good factor. When the depreciation percentage is applied to the historical cost, it concurrently trends the historical cost to an estimate of replacement cost new and depreciates it to arrive at an estimate of present value. Any deviation from this table​ for unusual functional or economic obsolescence, etc., should be documented in compliance with Property Tax Rule 6 (F).​​

YearI10I12I15I17I20
2024​
9193959596
20238488919395
20227984919396
202177869498103
2020728394100106
201961748794102
20185267829099
20174358768596
20163451697992
20152743627285
20142034546680
20131629496175
20121323425470
20111318364965
2010 15324461
2009 14263855
2008  223449
2007  192946
2006  172543
2005  152239
2004   1935
2003   1833
2002   1629
2001
    26
2000    22
1999    20
1998    17
1997     
1996     ​