December Invoice, January Delivery: Proving the Placed-in-Service Date

Published: August 6, 2026 · Reading time: 11 min

TL;DR: For most expenses, the receipt in your hand settles the year. For depreciable property it settles nothing — the controlling date is when the asset was ready and available for its business use, and the payment date is irrelevant. That single difference means a December 28 invoice with a January 6 delivery is a next-year deduction no matter when the money moved, and a fully financed purchase with $0 down is a this-year deduction if the equipment was ready by December 31. What proves it is not the invoice: it is the delivery record, the activation or registration date, and evidence of first business use. Get it wrong and you do not merely shift a deduction — a §179 election is year-specific, and a late purchase can trigger the mid-quarter convention on everything you bought all year.

There is a companion to this question that most freelancers meet first: which tax year a receipt belongs to. That post answers when a payment lands — the charge date on a bank card, the mailing date of a cheque, the day a vendor's house account is actually paid.

Every word of it is correct, and none of it applies to equipment.

For property you depreciate, the payment date is not merely a secondary consideration. It is irrelevant. Depreciation is not a payment-based deduction; it is a cost-recovery allowance for property you own and have placed in service. Which is why the two posts give opposite answers to the same December question, and why the file you keep for a software subscription is the wrong file for a camera.

What "placed in service" means

Treas. Reg. §1.167(a)-11(e) and Publication 946 give the standard: property is placed in service on the date it is ready and available for a specific use, whether in a trade or business or in the production of income.

Read that phrase carefully, because it cuts in two directions people find equally surprising.

You do not have to use it. A sheet-fed scanner delivered, unboxed and plugged in on December 29 is placed in service on December 29, even if the first receipt you actually scan is on January 8. It was ready and available. Readiness is the test, not activity.

Delivery is not automatically enough. An asset that cannot yet perform its function is not ready and available, however firmly it is sitting in your hallway:

The pattern: ask what the asset has to be able to do, then ask when it could do it. Order date, invoice date and payment date do not appear in that question at all.

The payment date really is irrelevant

This is worth stating on its own because it is where the mental model from ordinary expenses actively misleads.

You can deduct the full cost of equipment you have not paid for. Finance a $9,400 workstation with nothing down and the first payment due in March: if it is placed in service in December, the whole $9,400 is available under §179 or 100% bonus depreciation in that year. You own the asset, you owe the debt, and the debt is not the deduction — the interest on it is deducted separately as it accrues or is paid.

And paying in full changes nothing if the asset is not ready. Wiring $9,400 on December 20 for equipment that lands on January 6 buys a January deduction.

The same asymmetry means the cash versus accrual question does not reach here either. Your accounting method governs when income and ordinary expenses are recognised. Depreciation is neither, and the placed-in-service test applies identically to both methods.

The documents that actually prove it

Here is the practical failure. A freelancer's equipment file usually contains exactly one thing: the purchase invoice. And on a straddling purchase, the invoice date is the fact in dispute — it is what makes the deduction look like a December deduction when it is not.

Keep at least two independent dated items:

Tier 1 — readiness evidence, strongest:

• Delivery confirmation or carrier tracking record, with its date
• Installation or setup record — the technician's invoice, the assembly completion date
• Activation record — licence key issue date, first login timestamp, firmware registration, carrier activation
• For a vehicle: registration and insurance effective dates

Tier 2 — first-business-use evidence, strong corroboration:

• The first invoice produced with the asset, or the first job it appears in
• A dated photograph of it set up in your workspace
• The first mileage log entry for a vehicle
• A calendar entry for the delivery or setup appointment

Tier 3 — the transaction:

• The purchase invoice and the payment record

Tier 3 is not useless — it establishes cost and ownership, which you need for basis. It just does not answer the question this post is about, and a file containing only Tier 3 is a file with no answer in it.

Do not photograph the box and stop. A dated photo of an unopened carton proves delivery and, if anything, argues against readiness. Photograph it set up and working.

The mid-quarter convention: how one December purchase moves everything

Most freelancers who elect §179 or bonus never meet this. It is worth understanding anyway, because the freelancers who do meet it are exactly the ones who bought something large in December — and the effect reaches assets they bought in March.

Under MACRS, the half-year convention normally treats every asset as placed in service at the midpoint of the year, so first-year 5-year property gets 20% regardless of the actual month.

But if more than 40% of the aggregate basis of property placed in service during the year falls in the fourth quarter, the mid-quarter convention applies instead — and it applies to every asset placed in service that year, each at the rate for its own quarter.

Priya's 2026 additions, with no §179 election and bonus elected out of (bonus applies automatically under §168(k) unless you elect out, which is why the election runs the other way from §179):

Fourth-quarter share: $9,400 ÷ $19,400 = 48.45% — over 40%, so mid-quarter applies.

The December purchase cost her $710 of first-year deduction. Look at where it comes from, because the aggregate hides the mechanism — every asset's rate changes, not only December's:

The December asset loses $1,410 on its own — three quarters of the deduction it would have had under the half-year convention. A gain of $900 on the March asset offsets part of it, which is precisely why the aggregate figure understates what the December purchase actually did. And the direction is not predictable from the December purchase alone: shift the same $19,400 of spending earlier in the year and the whole question disappears.

The escape hatch is the part worth remembering. The 40% test is applied to basis after any §179 election but before bonus depreciation. Elect §179 on the December workstation and its remaining basis is zero, the fourth-quarter share drops to 0%, and the half-year convention applies to everything as normal. That is why a freelancer who routinely elects §179 on year-end equipment will never see this — and why one who elects bonus instead, or who is capped by the §179 taxable-income limit, might.

Getting the year wrong is not a wash

The comforting assumption is that a misdated asset just shifts a deduction between two adjacent years and roughly nets out. It does not.

§179 is a year-specific election. It is made on Form 4562 for the tax year the property is placed in service — on the original return for that year, timely or not, or on an amended return filed within the period allowed for that year. (An election can also be revoked on an amended return without IRS consent.) Claim it in the wrong year and the election was made for a year in which the property was not placed in service. An examiner disallows the whole amount for that year.

What follows is worse than a shift:

• Interest and any accuracy-related penalty run on the disallowed year
• The correct year may already be filed, requiring an amended return
• The correct year may be approaching or past its assessment window
• Your depreciation schedule now disagrees with your return for every subsequent year of the asset's life

And the consequences follow the asset for as long as you own it. A wrong start date means wrong annual depreciation, a wrong adjusted basis, and a wrong gain on disposal — see depreciation recapture.

The asset register

One row per asset, written the same week you buy it. This is the record that answers the question three years later when the invoice folder cannot.

• Description, vendor, invoice number, serial number where there is one
• Full cost — including sales tax, freight and installation, which are part of basis rather than separate deductions
• Date placed in service — and a note saying which document establishes it
• Business-use percentage
• Method and election — §179, bonus, MACRS, or the de minimis safe harbor
• Convention — half-year or mid-quarter, and why
• Federal adjusted basis, running
• State adjusted basis, running, if your state decouples — see state conformity and depreciation addbacks
• Disposition — date, proceeds, and how it left the business

Vehicles need more, and the reason is two sections rather than one. A vehicle is listed property under §280F(d)(4), and that is what makes the §274(d) substantiation rules apply. Under §274(d) the Cohan rule is unavailable — a reasonable estimate of business use is not merely weak evidence, it is no evidence at all. So a vehicle's row needs a contemporaneous mileage log behind it, not just a placed-in-service date. See listed property rules.

Keep it much longer than three years. Basis records live outside the ordinary retention window: you need them for as long as you own the asset, plus the assessment period after the year you dispose of it.

The December checklist

Ten minutes in the last week of December, and again in the first week of January:

• For every asset ordered in the last three weeks, ask when it will be ready and available — not when it was ordered
• Anything not yet delivered on December 31 is a next-year asset. Do not put it on this year's Form 4562
• Anything delivered but not yet functional — uncrated, uninstalled, unregistered, unlicensed — is a next-year asset
• For anything that is ready, capture the delivery record and a dated setup photo now, while both exist
• Register and insure a vehicle before December 31 if you intend a current-year deduction — those dates are close to decisive
• Total the year's additions and run the fourth-quarter 40% test
• Write every new asset into the register with its evidence noted, not just its cost

The whole exercise is cheap in December and expensive in an examination, which is the same shape as every other records rule — with one difference worth ending on. Most receipts prove what you bought. For depreciable property, what you bought is rarely in doubt. When it became ready is the fact under examination, and it is the one fact your receipt does not contain.

Frequently Asked Questions

What does placed in service actually mean for tax purposes?

Property is placed in service on the date it is ready and available for a specific use in your business — not the date you ordered it, paid for it, or received the invoice. The standard comes from Treasury Regulation 1.167(a)-11(e) and is restated in Publication 946. Two consequences follow that surprise people in opposite directions. First, you do not have to actually use the asset: a scanner delivered, unboxed and set up on December 29 is placed in service in that year even if the first receipt you scan with it is in January, because it was ready and available. Second, delivery alone is not enough if the asset cannot yet perform its function: a machine sitting in its crate awaiting installation, a vehicle that cannot legally be driven because it is unregistered, or a software system whose licence has not been issued is not ready and available, and the date moves to when it is. The test is readiness for its assigned function, and the evidence you keep should speak to readiness rather than to purchase.

Does the payment date matter for a depreciation deduction?

No, and this is the sharpest difference between depreciable property and every other business expense. For ordinary expenses a cash-basis freelancer deducts in the year of payment, which is why the charge date on a credit card and the mailing date of a cheque matter so much. Depreciation is not a payment-based deduction at all — it is a cost-recovery allowance for property you own and have placed in service, so when and how you paid is beside the point. You can finance the entire purchase, put nothing down, and still deduct the full cost under Section 179 or bonus depreciation in the year the asset is placed in service. Equally, paying cash in full on December 20 buys you nothing if the equipment is not ready and available until January. The practical filing consequence is that the payment record which proves the year for a software subscription proves nothing for a camera, and your file needs a different document for each.

What documents prove when equipment was placed in service?

Anything dated that shows the asset became ready and available for its business function, and you want at least two independent items. The strongest are the delivery confirmation or carrier tracking record with its date, the installation or setup record, and the activation record — a licence key issue date, a first login, a firmware registration, a carrier activation. Behind those, evidence of first business use carries real weight: the first invoice produced with the asset, a dated job photo, the first mileage log entry for a vehicle, a calendar entry for the setup. For a vehicle, the registration and insurance effective dates are close to decisive. The purchase invoice on its own is the weakest document in the file for this purpose, because it proves the transaction rather than the readiness — and where the two straddle December 31, the invoice date is precisely the fact in dispute.

What happens if I claim Section 179 in the wrong year?

The deduction is disallowed in the year you claimed it, and recovering it in the correct year may be awkward or impossible. The deduction is disallowed in the year you claimed it, and the correct year may be harder to reach than you expect. Section 179 is an election made on Form 4562 for the tax year the property is placed in service — on the original return for that year, whether or not you filed it on time, or on an amended return filed within the period allowed for that year. Claim it a year early and an examiner disallows the whole amount for that year, because the property was not placed in service in it. Recovering it in the right year means amending that year if it is already filed, which is permitted, so the real constraint is the assessment window rather than a timeliness rule: once the period for the correct year has closed, the deduction is gone. This is also not a case where the deduction merely shifts and nets out over two years, because the interest and any accuracy-related penalty run on the disallowed year regardless. Getting the date right the first time is much cheaper than being right about it later.

Can a December equipment purchase reduce my depreciation on everything else?

Yes, through the mid-quarter convention, and it is the least-known trap in year-end equipment buying. MACRS normally uses the half-year convention, treating every asset as placed in service at the midpoint of the year regardless of the actual date. But if more than 40 percent of the total basis of property placed in service during the year falls in the fourth quarter, the mid-quarter convention applies instead — to every asset placed in service that year, not only the December one. A freelancer with $6,000 of March purchases, $4,000 in July and $9,400 in December has 48.45 percent in the fourth quarter, and the first-year MACRS deduction drops from $3,880 to $3,170. The escape hatch is that the 40 percent test is applied to basis after any Section 179 election but before bonus depreciation, so electing Section 179 on the December purchase usually removes it from the calculation entirely and takes the question off the table.

Authoritative References

• IRS Publication 946 — How To Depreciate Property
• IRS — About Form 4562, Depreciation and Amortization
• IRS Publication 583 — Starting a Business and Keeping Records
• IRS Publication 535 — Business Expenses
• IRS — Instructions for Schedule C (Form 1040)

Related reading: Which tax year a receipt belongs to · Line 13 depreciation · Section 179 · State conformity and depreciation addbacks · Used equipment basis records

The Invoice Proves What. The File Has to Prove When.

For equipment, the receipt is the weakest document in the folder — it dates the transaction, not the readiness, and on a purchase that straddles December 31 those are different years. CentSense scans every equipment receipt with AI the day it arrives, captures the vendor, cost and date so the asset register starts from a real record instead of a reconstruction, and exports a CPA-ready CSV your preparer can build Form 4562 from. Free tier includes 10 AI scans per month; Solo is $5/month for unlimited scanning and mileage logging.

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This guide is general education for U.S. freelancers and Schedule C filers in 2026. It is not personalized tax advice — a purchase that straddles a year end, or a §179 election you think may have been claimed in the wrong year, is worth taking to a CPA or EA.