Property, Plant and Equipment Disclosure
Asset Age Ratios (Summary)
Average Age
Estimated Total Useful Life
Estimated Age, Time Elapsed Since Purchase
Estimated Remaining Life

Arista Networks Inc., balance sheet: property, plant and equipment

US$ in thousands

	Dec 31, 2024	Dec 31, 2023	Dec 31, 2022	Dec 31, 2021	Dec 31, 2020
Land	47,189)	44,645)	41,500)	40,145)	—)
Equipment and machinery	160,673)	144,850)	122,407)	90,915)	70,655)
Computer hardware and software	63,941)	57,761)	52,148)	44,083)	40,081)
Furniture and fixtures	3,526)	3,576)	3,575)	3,634)	3,787)
Leasehold improvements	34,712)	34,584)	30,102)	30,502)	31,448)
Construction-in-process	8,209)	4,242)	2,124)	2,378)	1,441)
Property and equipment, gross	318,250)	289,658)	251,856)	211,657)	147,412)
Accumulated depreciation	(219,405)	(188,078)	(156,847)	(133,023)	(115,181)
Property and equipment, net	98,845)	101,580)	95,009)	78,634)	32,231)

Based on: 10-K (reporting date: 2024-12-31), 10-K (reporting date: 2023-12-31), 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31), 10-K (reporting date: 2020-12-31).

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Item	Description	The company
Property and equipment, gross	Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.	Arista Networks Inc. property and equipment, gross increased from 2022 to 2023 and from 2023 to 2024.
Property and equipment, net	Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.	Arista Networks Inc. property and equipment, net increased from 2022 to 2023 but then slightly decreased from 2023 to 2024.

Arista Networks Inc., asset age ratios

	Dec 31, 2024	Dec 31, 2023	Dec 31, 2022	Dec 31, 2021	Dec 31, 2020
Average age ratio	80.94%	76.76%	74.56%	77.56%	78.14%
Estimated total useful life (years)	8	8	8	9	7
Estimated age, time elapsed since purchase (years)	6	6	6	7	6
Estimated remaining life (years)	2	2	2	2	2

Based on: 10-K (reporting date: 2024-12-31), 10-K (reporting date: 2023-12-31), 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31), 10-K (reporting date: 2020-12-31).

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Asset age ratio	Description	The company
Average age ratio	As long as straight-line depreciation is used, this is an accurate estimate of asset age as a percentage of depreciable life. The relative age is a useful measure of whether the company fixed asset base is old or new. Newer assets are likely to be more efficient.	Arista Networks Inc. average age ratio of depreciable property, plant and equipment deteriorated from 2022 to 2023 and from 2023 to 2024.
Estimated total useful life	Over longer time periods, this ratio is a useful measure of company depreciation policy and can be used for comparisons with competitors.	Arista Networks Inc. estimated total useful life of depreciable property, plant and equipment decreased from 2022 to 2023 but then slightly increased from 2023 to 2024.
Estimated time elapsed since purchase	The approximate age in years of a company fixed assets. Useful for comparison purposes.	Arista Networks Inc. estimated time elapsed since purchase of depreciable property, plant and equipment improved from 2022 to 2023 but then deteriorated significantly from 2023 to 2024.
Estimated remaining life		Arista Networks Inc. estimated remaining life of depreciable property, plant and equipment decreased from 2022 to 2023 and from 2023 to 2024.

	Dec 31, 2024	Dec 31, 2023	Dec 31, 2022	Dec 31, 2021	Dec 31, 2020
Selected Financial Data (US$ in thousands)
Accumulated depreciation	219,405)	188,078)	156,847)	133,023)	115,181)
Property and equipment, gross	318,250)	289,658)	251,856)	211,657)	147,412)
Land	47,189)	44,645)	41,500)	40,145)	—)
Asset Age Ratio
Average age¹	80.94%	76.76%	74.56%	77.56%	78.14%

Based on: 10-K (reporting date: 2024-12-31), 10-K (reporting date: 2023-12-31), 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31), 10-K (reporting date: 2020-12-31).

2024 Calculations

¹ Average age = 100 × Accumulated depreciation ÷ (Property and equipment, gross – Land)
= 100 × 219,405 ÷ (318,250 – 47,189) = 80.94%

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Asset age ratio	Description	The company
Average age	As long as straight-line depreciation is used, this is an accurate estimate of asset age as a percentage of depreciable life. The relative age is a useful measure of whether the company fixed asset base is old or new. Newer assets are likely to be more efficient.	Arista Networks Inc. average age ratio of depreciable property, plant and equipment deteriorated from 2022 to 2023 and from 2023 to 2024.

	Dec 31, 2024	Dec 31, 2023	Dec 31, 2022	Dec 31, 2021	Dec 31, 2020
Selected Financial Data (US$ in thousands)
Property and equipment, gross	318,250)	289,658)	251,856)	211,657)	147,412)
Land	47,189)	44,645)	41,500)	40,145)	—)
Depreciation expense	34,000)	31,700)	25,600)	19,500)	20,100)
Asset Age Ratio (Years)
Estimated total useful life¹	8	8	8	9	7

Based on: 10-K (reporting date: 2024-12-31), 10-K (reporting date: 2023-12-31), 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31), 10-K (reporting date: 2020-12-31).

2024 Calculations

¹ Estimated total useful life = (Property and equipment, gross – Land) ÷ Depreciation expense
= (318,250 – 47,189) ÷ 34,000 = 8

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Asset age ratio	Description	The company
Estimated total useful life	Over longer time periods, this ratio is a useful measure of company depreciation policy and can be used for comparisons with competitors.	Arista Networks Inc. estimated total useful life of depreciable property, plant and equipment decreased from 2022 to 2023 but then slightly increased from 2023 to 2024.

	Dec 31, 2024	Dec 31, 2023	Dec 31, 2022	Dec 31, 2021	Dec 31, 2020
Selected Financial Data (US$ in thousands)
Accumulated depreciation	219,405)	188,078)	156,847)	133,023)	115,181)
Depreciation expense	34,000)	31,700)	25,600)	19,500)	20,100)
Asset Age Ratio (Years)
Time elapsed since purchase¹	6	6	6	7	6

Based on: 10-K (reporting date: 2024-12-31), 10-K (reporting date: 2023-12-31), 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31), 10-K (reporting date: 2020-12-31).

2024 Calculations

¹ Time elapsed since purchase = Accumulated depreciation ÷ Depreciation expense
= 219,405 ÷ 34,000 = 6

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Asset age ratio	Description	The company
Estimated time elapsed since purchase	The approximate age in years of a company fixed assets. Useful for comparison purposes.	Arista Networks Inc. estimated time elapsed since purchase of depreciable property, plant and equipment improved from 2022 to 2023 but then deteriorated significantly from 2023 to 2024.

	Dec 31, 2024	Dec 31, 2023	Dec 31, 2022	Dec 31, 2021	Dec 31, 2020
Selected Financial Data (US$ in thousands)
Property and equipment, net	98,845)	101,580)	95,009)	78,634)	32,231)
Land	47,189)	44,645)	41,500)	40,145)	—)
Depreciation expense	34,000)	31,700)	25,600)	19,500)	20,100)
Asset Age Ratio (Years)
Estimated remaining life¹	2	2	2	2	2

Based on: 10-K (reporting date: 2024-12-31), 10-K (reporting date: 2023-12-31), 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31), 10-K (reporting date: 2020-12-31).

2024 Calculations

¹ Estimated remaining life = (Property and equipment, net – Land) ÷ Depreciation expense
= (98,845 – 47,189) ÷ 34,000 = 2

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Asset age ratio	Description	The company
Estimated remaining life		Arista Networks Inc. estimated remaining life of depreciable property, plant and equipment decreased from 2022 to 2023 and from 2023 to 2024.

Arista Networks Inc. (NYSE:ANET)

Analysis of Property, Plant and Equipment

Property, Plant and Equipment Disclosure

Asset Age Ratios (Summary)

Average Age

Estimated Total Useful Life

Estimated Age, Time Elapsed since Purchase

Estimated Remaining Life