Network Equipment Depreciation and Tax Deduction: MACRS and Section 179

Network equipment depreciation is how you spread the cost of routers, switches, servers, firewalls, and related hardware across the years they serve your business rather than deducting the full amount up front. For tax purposes, most of this gear falls into a five-year MACRS recovery class, but Section 179 expensing and 100% bonus depreciation can let you write off the entire cost in the year the equipment is placed in service.¹ The right approach depends on the size of the purchase, your taxable income, and how you want the deduction to hit your books versus your tax return.

What Qualifies as a Network Equipment Asset

Network equipment assets are the physical pieces of your data communications backbone: servers, routers, switches, firewalls, uninterruptible power supplies, wireless access points, and permanently installed cabling like fiber and copper runs. Firmware and proprietary management software baked into a device get capitalized with the hardware. A standalone operating system license is treated separately as an intangible asset and amortized over its own useful life.

The amount you capitalize is not just the invoice price. Under GAAP, capitalized cost includes every expenditure necessary to get the asset into the condition and location required for its intended use.² Freight, professional installation, and preproduction testing all get added to the asset’s basis. Pay a consultant to configure and test a new core switch before it goes live, and that fee is part of the asset, not a separate operating expense. Costs that don’t help place the equipment in service, such as moving other equipment out of the way, get expensed as incurred.

When You Have to Capitalize and When You Can Expense

An expenditure gets capitalized when it produces a benefit beyond the current year.³ That is the default rule for equipment. Two IRS provisions let you avoid capitalization for smaller items.

The De Minimis Safe Harbor

The de minimis safe harbor lets you expense low-cost items immediately. If your business has an applicable financial statement (an audited financial statement, an SEC filing, or similar), you can expense items costing up to $5,000 each, provided you have a written accounting policy that treats them that way. Without an applicable financial statement, the limit is $2,500 per item or per invoice.³ That non-AFS threshold was raised from $500 for amounts paid on or after January 1, 2016; older references to the $500 figure are out of date.⁴

Because the limit applies per item, ten $2,000 access points on a single $20,000 invoice still qualify, as long as the invoice substantiates the individual pricing. You have to make the election on your tax return each year you use it.

Materials and Supplies

Small networking accessories generally fall into a separate materials and supplies category. Tangible personal property costing $200 or less, anything with a useful life of 12 months or less regardless of cost, and spare parts kept for maintenance can be deducted when used. Incidental items like patch cables, connectors, and cable ties, where you don’t track inventory, are deductible when purchased. Most cabling odds and ends never touch the balance sheet.

MACRS Recovery Periods for Network Equipment

Once an asset is capitalized, tax law dictates how long you spread the deduction. For tax depreciation you don’t pick a useful life. The IRS assigns a mandatory recovery period under the Modified Accelerated Cost Recovery System. Computers and peripheral equipment fall into a five-year class.¹ Routers, switches, and similar networking gear can also land in the five-year class if they qualify as computer peripherals. Equipment that doesn’t clearly fit an IRS asset class defaults to a seven-year recovery period. For higher-dollar purchases the classification is worth confirming.

For financial statements, most companies use straight-line depreciation over a three-to-five-year useful life, which reflects how quickly the technology dates. Capitalize a $25,000 switch with a five-year life and no salvage value, and you record $5,000 of book depreciation each year. Accelerated methods like double-declining balance front-load the expense and better match how quickly network gear loses productive value.

Because GAAP depreciation and MACRS rarely line up, your book income and taxable income will differ. That’s a timing difference that reverses over the asset’s life, and in the early years the gap can be substantial when you use accelerated tax methods.

Section 179 and Bonus Depreciation

Two provisions let you skip the multi-year schedule entirely for tax purposes.

Section 179 Expensing

Section 179 allows you to deduct the full cost of qualifying equipment in the year you place it in service rather than depreciating it over five or seven years.⁵ For 2026, the maximum deduction is $2,560,000, and it phases out dollar-for-dollar once total equipment purchases for the year exceed $4,090,000. Buy $4,500,000 in equipment and your Section 179 limit drops by $410,000, leaving a maximum deduction of $2,150,000.

Section 179 cannot exceed your taxable business income for the year, and it cannot create or increase a net operating loss.⁵ Any amount you can’t use because of the income limit carries forward. The deduction is claimed on IRS Form 4562.

100% Bonus Depreciation

Bonus depreciation is the second accelerated deduction, and as of 2026 it is back at full strength. The One, Big, Beautiful Bill permanently restored 100% bonus depreciation for qualifying property acquired and placed in service after January 19, 2025.⁶ That reverses the phasedown that had cut the rate from 100% in 2022 to 60% in 2024 and was on track for zero by 2027.

Unlike Section 179, bonus depreciation has no annual dollar cap and no taxable income limit. It can create or increase a net operating loss, which then carries forward. It applies to both new and used equipment, as long as the property is new to you.

Using Both on the Same Purchase

You can stack them. Section 179 applies first, up to its limits. Bonus depreciation then applies to whatever cost remains. For most 2026 network equipment purchases, 100% bonus depreciation alone will wipe out the entire cost in year one, and Section 179 mainly matters when you need to work around the income limitation or want to be selective about which assets get accelerated treatment. You can also elect out of bonus depreciation for an entire class of property in a given year when income timing calls for it.

Repairs Versus Capital Improvements After Installation

Once equipment is in service, every follow-on expenditure has to be classified as a deductible repair or a capital improvement that adds to basis. Routine maintenance is expensed. Replacing a failed power supply, swapping a defective fan module, or updating firmware keeps the equipment running in its current condition and stays in repair territory.

A cost must be capitalized if it materially improves the equipment, adapts it to a new use, or restores it to like-new condition after significant deterioration. Installing new line cards that double a router’s throughput and extend its service life by three years is a capital improvement. That cost gets added to basis and depreciated over the remaining (or newly extended) life.

The analysis runs against the whole unit of property, meaning all components that are functionally interdependent (components you cannot place in service without each other).³ The larger the unit of property, the harder it is for any one expenditure to rise to a capital improvement. If you replace a component that had remaining basis, a partial disposition election under Treasury Regulation 1.168(i)-8 lets you write off the retired component’s undepreciated cost as a loss while capitalizing the replacement.⁷ You make the election by reporting the gain or loss on a timely filed return for the year of the disposition.

Disposal and Depreciation Recapture

When you retire network equipment, you remove both the original cost and the accumulated depreciation from the balance sheet. The difference between what you receive and the remaining book value is a gain or loss. A server that originally cost $30,000 with $28,000 of accumulated depreciation, sold for $4,000, produces a $2,000 gain. Scrap the same server for nothing and you have a $2,000 loss. Gains and losses on business property are reported on IRS Form 4797.⁸

This is where aggressive depreciation has a tail. Under Section 1245, any gain on the sale of depreciable equipment is taxed as ordinary income up to the total depreciation previously deducted.⁹ The depreciation reduced ordinary income when you took it, and the IRS wants that character preserved on the way out. Recapture applies regardless of holding period. If you used Section 179 or bonus depreciation to write off $100,000 in year one and later sell the equipment for $15,000, that entire $15,000 is ordinary income. Donating or scrapping equipment avoids recapture because there is no gain, but you also recover little or nothing.

Records You Need to Keep

The tangible property regulations lean heavily on documentation. Your capitalization policy needs to be in writing and applied consistently, and the de minimis safe harbor election must be attached to your return each year you use it. Every capitalized asset should have a record tracing back to the original invoice, showing the ancillary costs included in basis, the depreciation method and recovery period, and any later capital improvements.

A fixed asset register with serial numbers, installation dates, and physical locations pays off when components are upgraded or retired, because partial dispositions require you to allocate original cost among components that may never have been separately invoiced. Building that record from the start avoids the reconstruction exercise that otherwise happens during an audit or a major refresh.

1
Internal Revenue Service. Publication 946 – How To Depreciate Property
2
PwC Viewpoint. 1.2 Accounting for Capital Projects
3
Internal Revenue Service. Tangible Property Final Regulations
4
Internal Revenue Service. Notice 2015-82 – Increase in De Minimis Safe Harbor Limit for Taxpayers Without an Applicable Financial Statement
5
Office of the Law Revision Counsel. 26 U.S. Code 179 – Election to Expense Certain Depreciable Business Assets
6
Internal Revenue Service. Treasury, IRS Issue Guidance on the Additional First Year Depreciation Deduction Amended as Part of the One, Big, Beautiful Bill
7
Internal Revenue Service. Examining a Taxpayer Electing a Partial Disposition of a Building
8
Internal Revenue Service. About Form 4797, Sales of Business Property
9
Office of the Law Revision Counsel. 26 U.S. Code 1245 – Gain From Dispositions of Certain Depreciable Property