Accumulated depreciation: what it is, how to calculate it, and where it goes
Accumulated depreciation is a contra-asset with a credit balance that reduces equipment on the balance sheet....
Quick answer
To record depreciation, debit Depreciation Expense and credit Accumulated Depreciation for the period's amount. The asset account keeps its original cost until the asset is sold or retired. Then the cost and accumulated depreciation are both removed, and any difference from the proceeds is a gain or loss.
Depreciation is recorded with an adjusting journal entry. No cash changes hands, but part of an asset's cost moves from the balance sheet to the income statement. The entry has the same shape whatever depreciation method you use; only the amount changes. Disposals take a second, slightly longer entry, and that is where most of the mistakes happen.
Debit Depreciation Expense and credit Accumulated Depreciation for the period's depreciation. The Federal Reserve's property and equipment accounting manual records it the same way, "debiting current expense and crediting the related allowance for depreciation." Allowance for depreciation is another name for accumulated depreciation.
Take a $12,000 commercial mower expected to last five years, with a $2,000 salvage value. Straight-line depreciation is $2,000 a year, and the entry at December 31 is:
| Account | Debit | Credit |
|---|---|---|
| Depreciation Expense | $2,000 | |
| Accumulated Depreciation, Equipment | $2,000 |
A memo such as "Depreciation, commercial mower, year 1" keeps the entry traceable to the schedule.
Crediting the asset account directly would get the net figure right and lose the history: you could no longer see what the asset cost or how much of that cost has been expensed.
Here is the mower's whole life in the ledger:
| Event | Debit | Credit |
|---|---|---|
| Buy the mower | Equipment $12,000 | Cash or Accounts Payable $12,000 |
| Each year-end, years 1 to 5 | Depreciation Expense $2,000 | Accumulated Depreciation $2,000 |
| Scrap it at the end of year 5, nothing received | Accumulated Depreciation $10,000 and Loss on Disposal $2,000 | Equipment $12,000 |
After five years, accumulated depreciation is $10,000 and the net book value is the $2,000 salvage estimate. Scrapping the mower for nothing turns that remaining book value into a loss.
The entry is the same at any frequency; only the amount is scaled. Monthly depreciation on the mower is $2,000 ÷ 12 = $166.67, with the last month of each year absorbing the rounding so the year totals $2,000.
Businesses that only produce annual accounts often post one adjusting entry at year end. Those that produce monthly financial statements post monthly, so each month carries its share of the cost.
An asset rarely arrives on the first day of the year, so its first entry covers part of a year. Which part depends on the convention in your accounting policy:
| Convention | Mower placed in service April 15 | First-year depreciation |
|---|---|---|
| Full month of acquisition | April to December, 9 months | $1,500.00 |
| Start the month after service | May to December, 8 months | $1,333.33 |
| Half-year | Half of a full year | $1,000.00 |
The Federal Reserve manual uses the second: "depreciation starts the month following when the fixed asset is placed into service." Tax depreciation under MACRS has conventions of its own, set out in IRS Publication 946. For the books, choose one convention, write it into your policy, and apply it to every asset. The total depreciation over the asset's life is the same; only the timing moves.
You do not need a journal line for every asset. Most businesses post one entry per asset category, such as vehicles, equipment and computers, using the totals from their fixed asset depreciation schedule, and keep the asset-by-asset detail in the schedule or register. What matters is that the register's accumulated depreciation for each category agrees with the matching accumulated depreciation account in the ledger.
When an asset leaves the business, both its cost and its accumulated depreciation come off the books. The Federal Reserve manual describes the same steps: deduct "the gross asset value and the related accumulated depreciation," and record the difference between net book value and the proceeds as a gain or loss.
Before you record any disposal, bring depreciation up to date. If the asset is sold partway through a year, post depreciation for the months it was in use first, so the disposal is measured against the right book value.
The examples below use a delivery van that cost $42,000 and depreciates by $6,000 a year. At the end of year four it has $24,000 of accumulated depreciation and a net book value of $18,000.
The van sells for $21,000, which is $3,000 above its book value:
| Account | Debit | Credit |
|---|---|---|
| Cash | $21,000 | |
| Accumulated Depreciation, Vehicles | $24,000 | |
| Vehicles | $42,000 | |
| Gain on Disposal of Assets | $3,000 |
The van sells for $14,000, which is $4,000 below its book value:
| Account | Debit | Credit |
|---|---|---|
| Cash | $14,000 | |
| Accumulated Depreciation, Vehicles | $24,000 | |
| Loss on Disposal of Assets | $4,000 | |
| Vehicles | $42,000 |
The van is written off after an accident with no recovery, so its whole $18,000 book value becomes a loss:
| Account | Debit | Credit |
|---|---|---|
| Accumulated Depreciation, Vehicles | $24,000 | |
| Loss on Disposal of Assets | $18,000 | |
| Vehicles | $42,000 |
If the van is sold on March 31 of year five for $17,000, first record three months of depreciation, $6,000 × 3 ÷ 12 = $1,500:
| Account | Debit | Credit |
|---|---|---|
| Depreciation Expense | $1,500 | |
| Accumulated Depreciation, Vehicles | $1,500 |
Accumulated depreciation is now $25,500 and the book value $16,500, so the sale books a $500 gain:
| Account | Debit | Credit |
|---|---|---|
| Cash | $17,000 | |
| Accumulated Depreciation, Vehicles | $25,500 | |
| Vehicles | $42,000 | |
| Gain on Disposal of Assets | $500 |
Skip the first entry and the sale shows a $1,000 loss instead: the same total effect on profit, with three months of depreciation misreported as a loss on disposal.
A trade-in is a disposal and a purchase at once. Treat the trade-in allowance like sale proceeds when you work out the gain or loss on the old asset, and record the new asset as its own purchase. The Federal Reserve manual takes the difference to expense when the old asset's book value exceeds the trade-in allowance. If the allowance looks inflated against the price of the new asset, ask your accountant how to value the exchange.
Once an asset's accumulated depreciation reaches its cost less salvage, stop posting depreciation for it. It stays on the books, with its cost and accumulated depreciation, until it is retired. The mower at the end of year five is in that position: scrapping it for nothing books the $2,000 salvage value as a loss, and selling it for $2,500 books a $500 gain. The fully depreciated assets guide covers what to check before you retire one.
| Mistake | What it does | Fix |
|---|---|---|
| Crediting the asset account instead of accumulated depreciation | Loses the original cost and the depreciation history | Always credit the contra-asset account |
| Skipping depreciation up to the disposal date | Misstates both depreciation expense and the gain or loss | Post the partial period before the disposal |
| Depreciating past salvage value | Understates book value and overstates expense | Stop when net book value reaches salvage |
| Retiring an asset in the ledger but not the register, or the reverse | Book values stop reconciling, and ghost assets build up | Record each disposal in both, from the same event |
AssetCenter's fixed asset management software produces the figures these entries need. Its depreciation report shows each asset's current-year depreciation, accumulated depreciation and net book value, by straight-line, double-declining balance, 150% declining balance, sum-of-years' digits or MACRS. The month of purchase counts as a full month and the first and last years are prorated from there, the figures can follow your fiscal year, and the report exports to Excel so your bookkeeper can total it by category.
It also records the event that triggers a disposal entry. Decommissioning an asset as Sold, Retired, Recycled, Lost or Stolen keeps its history and costs in your reports, and the depreciation report can be filtered by those statuses. AssetCenter does not post journal entries, keep separate tax and book records, or replace your general ledger; your bookkeeper posts the entries from its figures.
Both sides appear in the entry. Depreciation expense is debited, and accumulated depreciation, the contra-asset account, is credited.
It is the same entry, recorded at the end of a period to bring the books up to date before the financial statements are prepared: debit Depreciation Expense, credit Accumulated Depreciation.
No. The entry moves cost from the balance sheet to the income statement without any cash changing hands. The cash went out when the asset was bought.
No. Land is not depreciated, so it never gets a depreciation entry. Buildings and land improvements are depreciated separately from the land they sit on.
Take one period's figures from your fixed asset depreciation schedule and post the entry by category. Then compare each accumulated depreciation account in the ledger with the register's total for that category. If they differ, look for a disposal recorded in one place and not the other, and use the asset disposal checklist to close it out.
Founder & CEO, AssetCenter
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