Is That Amazon Order a Supply or an Asset?

A purchase is not "office supplies" just because it came in an Amazon box. Under the IRS tangible property regulations, items that cost more than the expensing thresholds, last more than a year, or improve an existing asset generally have to be capitalized and depreciated, unless you elected the de minimis safe harbor on your return. For example, a $1,000 memory upgrade for a $16,000 workstation is an improvement to that computer, not a box of pens. The good news is that capitalizing rarely means waiting years for the deduction, because Section 179 and 100% bonus depreciation often let you write it off in the year you place it in service.

Why does it matter how you categorize an Amazon purchase?

Miscoding purchases causes three problems:

• Your books are wrong. Equipment buried in supplies understates your assets and overstates your expenses.
• Your return can be wrong. If an item should have been capitalized and you did not elect the de minimis safe harbor, the deduction may not be supportable as filed.
• You lose track of assets. No fixed asset record means no depreciation schedule, no insurance list, and a mess when you sell or dispose of equipment.

Online marketplace orders are the worst offenders because one order can mix printer paper, a monitor, and a replacement part for a machine.

What counts as materials and supplies?

Under Treasury Regulation 1.162-3, materials and supplies include tangible property that:

• Costs $200 or less per unit, or
• Has an economic useful life of 12 months or less, or
• Is a component acquired to maintain or repair a unit of property, fuel and similar items consumed in operations, and a few other categories.

Paper, toner, cleaning supplies, and inexpensive cables fit here. A laptop does not.

What is the de minimis safe harbor?

The de minimis safe harbor election in Treasury Regulation 1.263(a)-1(f) lets a business expense lower cost items that would otherwise be capitalized:

• $2,500 per invoice or per item (as substantiated by invoice) if you do not have an applicable financial statement (generally an audited financial statement or one filed with the SEC).
• $5,000 per invoice or per item if you do have an applicable financial statement.

Key requirements:

• You must have accounting procedures in place at the start of the year to expense items below the threshold (a written policy is required if you have an applicable financial statement, and a good idea either way).
• You must expense those items on your books consistently.
• You must attach an election statement to a timely filed original return (including extensions) every year you want to use it. It is an annual election, not a one-time choice.

If you skip the statement, the safe harbor does not apply for that year.

When does an upgrade become an improvement?

Under the capitalization regulations, you must capitalize amounts paid to improve a unit of property. An improvement is generally a betterment (adds capacity, productivity, or quality), a restoration (returns a deteriorated asset to like-new condition or replaces a major component), or an adaptation to a new or different use.

Adding significant memory, storage, or processing capacity to a workstation generally increases its capacity, which points toward a betterment. A like-for-like replacement of a failed part is more likely a repair. Facts matter, so document why you treated an item the way you did.

How can you still deduct capitalized items quickly?

Capitalizing is a bookkeeping step, not always a tax delay. For 2026:

• Section 179. You can elect to expense up to $2,560,000 of qualifying property, reduced dollar for dollar once total qualifying property placed in service exceeds $4,090,000 (IRS Rev. Proc. 2025-32 and Publication 946). The deduction is also limited to taxable income from the active conduct of a trade or business.
• Bonus depreciation. The One Big Beautiful Bill Act made 100% bonus depreciation permanent for qualified property acquired after January 19, 2025 (IRS Notice 2026-11). It is not limited by business income the way Section 179 is.
• Regular depreciation. Computers and peripheral equipment are generally 5-year property under MACRS if you choose not to accelerate.

Your state may not follow federal bonus depreciation or Section 179 limits, so check before assuming the state deduction matches.

Worked example (illustrative numbers only)

A hypothetical design firm (no audited financials) places three Amazon orders in 2026:

For Order 3, the firm records a $3,200 laptop asset and a $1,000 improvement to the workstation. It can then elect Section 179 or claim 100% bonus depreciation on both, producing a full 2026 deduction while keeping accurate asset records. If the firm elected de minimis and the $1,000 upgrade was billed and substantiated as its own item, the firm may be able to expense it under the safe harbor instead. Either way, the decision is documented, not defaulted to "supplies."

How do you keep online purchasing clean?

• Use a business account. A dedicated business purchasing account (such as an Amazon Business account) keeps company orders off personal accounts and gives you downloadable invoices.
• Name one purchasing contact. One person placing orders means fewer duplicate purchases and someone who knows what each item is for.
• Split mixed orders in your books. Code each line, not just the order total. In Core Books AI or any other ledger, that means splitting one card charge into supplies, de minimis items, and assets.
• Require a note for anything over $200. What is it, and what asset does it belong to?
• Keep a fixed asset list with date placed in service, cost, and location.

If you are not sure whether your books should record a purchase when you order it or when you pay for it, start with cash basis vs. accrual accounting. And because a large Section 179 or bonus depreciation deduction lowers your profit, revisit how much to set aside for taxes after a big equipment year.

Checklist: supply or asset?

• [ ] Does the item cost $200 or less, or last 12 months or less? Likely a supply.
• [ ] Is it under $2,500 per item or invoice, and did you elect the de minimis safe harbor this year? Likely expensed.
• [ ] Does it add capacity or extend the life of existing equipment? Likely an improvement to capitalize.
• [ ] Is it new equipment over the threshold? Capitalize, then consider Section 179 or bonus depreciation.
• [ ] Is the de minimis election statement on this year's return?
• [ ] Is the item on your fixed asset list?

The bottom line

Review each purchase, not each order. Supplies get expensed, larger items and upgrades get capitalized, and the de minimis safe harbor, Section 179, and bonus depreciation often deliver the same first-year deduction with books that hold up.

This article is general education, not tax advice for your situation. The right answer depends on your facts and the tax year.