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Journal entry for depreciation

Each period, debit Depreciation expense and credit Accumulated depreciation for the period's charge. The asset account keeps its original cost; accumulated depreciation, a contra-asset, grows until net book value reaches salvage value.
Cost
$48,000
Salvage value
$6,000
Monthly depreciation
$700
Entity
Illustrative company
Basis
Accrual
Currency
USD
Period
January 2026

The worked example

A delivery van costing $48,000 goes into service on January 1, 2026 with a five-year life and an expected $6,000 resale value. Straight-line, it depreciates by $700 a month; after the first year its net book value is $39,600.

  1. Transaction · January 1, 2026

    JE-11 Jan 2026Manualposted

    Buy the van.

    Journal entry JE-1, 2 lines
    AccountDimensionsDebitCredit
    1520 Vehicles48,000 US Dollar
    1000 Cash48,000 US Dollar
    Totals48,000 US Dollar48,000 US Dollar

    Balanced.

  2. Adjusting entry · January 31, 2026

    JE-231 Jan 2026Adjustingposted

    Depreciate January.

    Journal entry JE-2, 2 lines
    AccountDimensionsDebitCredit
    6400 Depreciation expense700 US Dollar
    1510 Accumulated depreciation700 US Dollar
    Totals700 US Dollar700 US Dollar

    Balanced.

Straight-line depreciation, first year

Computed by the same tested function the toolbelt runs. The last period absorbs any rounding, so the schedule sums to the cent.

Straight-line depreciation, first year
MonthDepreciationNet book value
Jan 2026700.0047,300.00
Feb 2026700.0046,600.00
Mar 2026700.0045,900.00
Apr 2026700.0045,200.00
May 2026700.0044,500.00
Jun 2026700.0043,800.00
Jul 2026700.0043,100.00
Aug 2026700.0042,400.00
Sep 2026700.0041,700.00
Oct 2026700.0041,000.00
Nov 2026700.0040,300.00
Dec 2026700.0039,600.00

What the entries do to the accounts

Every entry above posted to the ledger, starting from zero balances: the net debit or credit each account is left with. Debits equal credits, so the books still balance.

Net movement by account
AccountDebitCredit
1000 Cash48,000 US Dollar
1510 Accumulated depreciation700 US Dollar
1520 Vehicles48,000 US Dollar
6400 Depreciation expense700 US Dollar
Totals48,700 US Dollar48,700 US Dollar

Why it is booked this way

Depreciation allocates an asset's cost, less what it will be worth at the end, across the periods that use it. It is an estimate made once and applied consistently, not a valuation.

The credit goes to accumulated depreciation so the asset's cost is never overwritten. Cost less accumulated depreciation is net book value — what the asset is carried at.

Common mistakes

  • Crediting the asset account, so the register no longer shows original cost.
  • Starting depreciation on the purchase date when the asset went into service months later.
  • Using tax depreciation in the GAAP books.

Questions

Why not credit the asset directly?
So the balance sheet shows both the original cost and how much of it has been used. Net book value is the difference; the cost stays visible for the asset register and the auditor.
Which depreciation method should I use?
Straight-line charges the same each period. Declining-balance and sum-of-years-digits charge more early. Book depreciation is a policy choice that should reflect how the asset is used up; tax depreciation (MACRS, bonus) is separate.

Terms on this page

Work with this entry

The tool that computes the schedule, the concept behind it, the entries that come next and the components that render them.

An illustrative company, not anyone’s real books. Every figure on this page is computed from the inputs in the example and posted by the same functions as the journal entry balancer. General information for US companies under US GAAP, not accounting or tax advice.

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