Income Tax Act 2007

Schedule 10: Straight-line equivalents of diminishing value rates of depreciation

You could also call this:

"Depreciation rates made easy to understand"

You are looking at a schedule about depreciation rates. This schedule is part of the Income Tax Act 2007. It shows equivalent rates for different types of depreciation. The schedule has a table with two columns. One column shows diminishing value depreciation rates. The other column shows the straight-line equivalent rates. You can find the empowering provisions for this schedule in sections ss EE 40, EE 41, EZ 14, and EZ 15. These sections explain how the schedule is used. The table lists many different rates, from 1% to 100%. Each rate has a corresponding straight-line equivalent rate. You can use this table to find the straight-line equivalent rate for a given diminishing value depreciation rate. This can help you with your taxes.

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View the original legislation for this page at https://legislation.govt.nz/act/public/1986/0120/latest/link.aspx?id=DLM1523340.

This page was last updated on 1 January 2026 — View changes

Topics:

Money and consumer rights > Taxes

Schedule 6: Prescribed rates: PIE investments and retirement scheme contributions, or

"Special tax rates for investments and retirement savings"

Schedule 11: New banded rates of depreciation, or

"How to work out the value of things that lose value over time"

10Straight-line equivalents of diminishing value rates of depreciation Empowered by ss EE 40, EE 41, EZ 14, EZ 15

This is a medium table on 3 pages having 2 columns. The first row on each page is the headings for the columns.
Column 1 Diminishing value depreciation rate (%)	Column 2 Straight-line equivalent (%)
1	1
2	1.5
2.5	2
3	2.5
4	3
5	3.5
6	4
7	5
7.5	5.5
8	6
9.5	6.5
10	7
11	7.5
12	8
13	8.5
13.5	9
14	9.5
15	10
16	10.5
16.5	11
17	11.5
17.5	12
18	12.5
19	13
20	13.5
20.5	14
21	14.5
21.5	15
22	15.5
23	16
24	16.5
24.5	17
25	17.5
26	18
27	18.5
27.5	19
28	19.5
28.5	20
29	20.5
30	21
31	22
32	22.5
32.5	23
33	24
34	24.5
34.5	25
35	25.5
36	26
37	27
38	27.5
39	28
39.5	29
40	30
41	31
42	32
43	32.5
44	33
45	33.5
45.5	34
46	34.5
46.5	35
47	35.5
47.5	36
48	36.5
48.5	37
49	39
50	40
50.5	41
51	42
52	43
53	44
54	45
55	45.5
56	46
57	47
58	47.5
60	48
61	49
62	50
63	51
63.5	63.5
64	64
65	65
66	66
67	67
68	68
69	69
70	70
71	71
72	72
73	73
74	74
75	75
76	76
77	77
78	78
79	79
80	80
81	81
82	82
100	100