Depreciation
Provisions & Methods
Understand why assets lose value and how to calculate, record, and account for that loss. Master SLM vs WDV, both recording methods (charging to asset and provision account), and the Asset Disposal Account — with fully worked journal entries and Ledger accounts. High-scoring chapter in CBSE and CUET.
Think of it like a car — it loses value every year just by being used
When a business buys machinery for ₹1,00,000, that machinery does not stay worth ₹1,00,000 forever. Each year it gets older, more worn out, and less valuable. Depreciation is the accounting method of recognising this gradual decrease in value as an expense every year. Without recording depreciation, profit would be overstated and assets would be shown at wrong values.
1. Meaning of Depreciation
Depreciation is the permanent, gradual, and continuous decrease in the value of a fixed (tangible) asset due to use, passage of time, wear and tear, or obsolescence. It is charged as an expense in the Profit & Loss Account every year.
2. Features of Depreciation
Permanent Decrease
The fall in value is permanent, not temporary. A machine that has been used cannot regain its original value (unlike a temporary fall in market price of investments).
Applied to Fixed Tangible Assets
Depreciation applies to physical fixed assets like machinery, furniture, vehicles, buildings. Land is NOT depreciated (it has unlimited life). Intangible assets are amortised, not depreciated.
Non-Cash Expense
Depreciation reduces profit but does NOT involve any cash outflow in the year of charging. The cash went out when the asset was originally purchased.
Allocated Over Useful Life
The cost of an asset is spread over its useful life — not charged entirely in the year of purchase. This follows the Matching Principle of accounting.
3. Causes of Depreciation
Wear and Tear
Physical deterioration due to regular use. A machine used daily wears out faster than one used rarely. Most common cause for all manufacturing equipment.
Obsolescence
Asset becomes outdated due to new technology or changing demand. A computer from 2010 may be fully working but obsolete because better models exist.
Passage of Time
Some assets like leases, patents, and copyrights reduce in value simply because time passes, even without use. A 10-year lease loses 1/10th value each year.
Depletion
For natural resource assets (mines, quarries, oil wells), value reduces as the resource is extracted. Once the mine is exhausted, it has no value.
Accidents and Natural Disasters
Unexpected damage from floods, fire, or accidents reduces asset value permanently beyond the amount covered by insurance.
Effluxion of Time (For Legal Rights)
Intangible assets like patents, trademarks, and goodwill expire after a fixed legal period. The accounting standard requires amortisation over this period.
4. Need for Providing Depreciation
True and Fair View of Assets
Without depreciation, assets remain at original cost in Balance Sheet forever, giving a misleading picture. Depreciation ensures assets are shown at their correct (reduced) value.
Correct Profit Calculation
Depreciation is an expense. If not charged, profit is overstated. Overstated profit means excess tax payment and excess dividend to shareholders — both harmful to business.
Funds for Asset Replacement
By charging depreciation (a non-cash expense), the business retains cash within the firm. Over the asset's life, enough funds accumulate to replace the asset when it wears out.
Matching Principle
The cost of an asset should be matched against the revenue it helps generate. Depreciation spreads cost over useful life — matching expense with benefit period.
5. Factors Determining Amount of Depreciation
| Factor | Meaning | Impact |
|---|---|---|
| Cost of Asset | Total cost including purchase price, freight, installation charges | Higher cost → higher depreciation |
| Estimated Useful Life | Number of years the asset will be used productively | Longer life → lower annual depreciation |
| Residual/Scrap Value | Expected value at end of useful life (resale or scrap value) | Higher scrap value → lower depreciable amount |
| Method of Depreciation | SLM or WDV — different methods give different annual amounts | SLM = equal amounts; WDV = declining amounts |
| Cost of Installation | Any cost incurred to make asset ready for use | Added to cost of asset before calculating depreciation |
This is the total amount that will be depreciated over the asset's useful life.
6. Method 1 — Straight Line Method (SLM)
Also called Fixed Instalment Method or Original Cost Method. Under SLM, a fixed, equal amount of depreciation is charged every year over the useful life of the asset. The amount charged each year is the same.
Annual Depreciation = (₹1,20,000 − ₹20,000) ÷ 5 = ₹1,00,000 ÷ 5 = ₹20,000 per year
Rate = ₹20,000 ÷ ₹1,20,000 × 100 = 16.67% on original cost
Year 1 book value: ₹1,20,000 − ₹20,000 = ₹1,00,000
Year 2 book value: ₹1,00,000 − ₹20,000 = ₹80,000
Year 3 book value: ₹80,000 − ₹20,000 = ₹60,000
| Dr. Machinery Account Cr. | |||||||
| Date | Particulars | L.F. | Amount (₹) | Date | Particulars | L.F. | Amount (₹) |
|---|---|---|---|---|---|---|---|
| 1 Apr 23 | To Bank A/c | 1,20,000 | 31 Mar 24 | By Depreciation A/c | 20,000 | ||
| 31 Mar 24 | By Balance c/d | 1,00,000 | |||||
| Total | 1,20,000 | Total | 1,20,000 | ||||
| 1 Apr 24 | To Balance b/d | 1,00,000 | 31 Mar 25 | By Depreciation A/c | 20,000 | ||
| 31 Mar 25 | By Balance c/d | 80,000 | |||||
| Total | 1,00,000 | Total | 1,00,000 | ||||
| 1 Apr 25 | To Balance b/d | 80,000 | 31 Mar 26 | By Depreciation A/c | 20,000 | ||
| 31 Mar 26 | By Balance c/d | 60,000 | |||||
| Total | 80,000 | Total | 80,000 | ||||
7. Method 2 — Written Down Value Method (WDV)
Also called Diminishing Balance Method or Reducing Balance Method. Under WDV, depreciation is charged at a fixed percentage on the book value (WDV) at the beginning of each year. Because book value decreases every year, the amount of depreciation also decreases every year.
Year 1 (2023-24): 20% on ₹1,20,000 = ₹24,000 | Closing WDV = ₹96,000
Year 2 (2024-25): 20% on ₹96,000 = ₹19,200 | Closing WDV = ₹76,800
Year 3 (2025-26): 20% on ₹76,800 = ₹15,360 | Closing WDV = ₹61,440
Notice: Depreciation decreases each year. Asset never becomes zero under WDV.
| Dr. Machinery Account (WDV @20%) Cr. | |||||||
| Date | Particulars | L.F. | Amount (₹) | Date | Particulars | L.F. | Amount (₹) |
|---|---|---|---|---|---|---|---|
| 1 Apr 23 | To Bank A/c | 1,20,000 | 31 Mar 24 | By Depreciation A/c | 24,000 | ||
| 31 Mar 24 | By Balance c/d | 96,000 | |||||
| Total | 1,20,000 | Total | 1,20,000 | ||||
| 1 Apr 24 | To Balance b/d | 96,000 | 31 Mar 25 | By Depreciation A/c | 19,200 | ||
| 31 Mar 25 | By Balance c/d | 76,800 | |||||
| Total | 96,000 | Total | 96,000 | ||||
| 1 Apr 25 | To Balance b/d | 76,800 | 31 Mar 26 | By Depreciation A/c | 15,360 | ||
| 31 Mar 26 | By Balance c/d | 61,440 | |||||
| Total | 76,800 | Total | 76,800 | ||||
8. SLM vs WDV — Comparison
| Basis | SLM (Fixed Instalment) | WDV (Diminishing Balance) |
|---|---|---|
| Basis of calculation | Original (Historical) Cost | Written Down Value (Book Value) at start of year |
| Annual amount | Fixed — same every year | Decreasing — falls each year |
| Asset value at end | Reaches residual/scrap value | Never becomes zero (theoretically) |
| Effect on profit | Equal impact on profit every year | Profits rise in later years (lower depreciation) |
| Suitable for | Assets with uniform usage (furniture, leases) | Assets with higher use in early years (machinery, vehicles) |
| Recognised by | Income Tax Act (for calculating taxable income) | Income Tax Act (standard method for IT purposes) |
| Repair costs | Rise in later years (inconsistent total charge) | Combined Depr. + Repairs is more even across years |
| Simple to calculate? | Yes — easiest method | Slightly complex (% on changing base) |
9. Methods of Recording Depreciation
There are two methods of recording depreciation in the books:
Depreciation is directly deducted from the asset account. The asset account always shows the net book value (WDV). This is the method used in the worked examples above.
Depreciation A/c Dr. (annual amount)
To Asset A/c Cr. (same amount)
At year end, transfer depreciation to P&L Account:
Profit & Loss A/c Dr.
To Depreciation A/c Cr.
Under this method, the asset account is NOT reduced — it always remains at original cost. A separate Provision for Depreciation A/c (or Accumulated Depreciation A/c) accumulates the total depreciation charged so far. The net book value = Cost − Accumulated Provision for Depreciation.
(i) Charging depreciation each year:
Depreciation A/c Dr.
To Provision for Depreciation A/c Cr.
(ii) Transfer to P&L Account each year:
Profit & Loss A/c Dr.
To Depreciation A/c Cr.
Asset A/c remains at original cost throughout. In Balance Sheet: show Cost − Provision for Depreciation = Net Book Value.
| Dr. Machinery Account (Method B) Cr. | |||||||
| Date | Particulars | L.F. | Amount (₹) | Date | Particulars | L.F. | Amount (₹) |
|---|---|---|---|---|---|---|---|
| 1 Apr 23 | To Bank A/c | 1,20,000 | 31 Mar 24 | By Balance c/d | 1,20,000 | ||
| 1,20,000 | 1,20,000 | ||||||
| 1 Apr 24 | To Balance b/d | 1,20,000 | 31 Mar 25 | By Balance c/d | 1,20,000 | ||
| 1 Apr 25 | To Balance b/d | 1,20,000 | 31 Mar 26 | By Balance c/d | 1,20,000 | ||
| Dr. Provision for Depreciation Account Cr. | |||||||
| Date | Particulars | L.F. | Amount (₹) | Date | Particulars | L.F. | Amount (₹) |
|---|---|---|---|---|---|---|---|
| 31 Mar 24 | By Balance c/d | 20,000 | 31 Mar 24 | By Depreciation A/c | 20,000 | ||
| 20,000 | 20,000 | ||||||
| 31 Mar 25 | By Balance c/d | 40,000 | 1 Apr 24 | By Balance b/d | 20,000 | ||
| 31 Mar 25 | By Depreciation A/c | 20,000 | |||||
| 40,000 | 40,000 | ||||||
| 31 Mar 26 | By Balance c/d | 60,000 | 1 Apr 25 | By Balance b/d | 40,000 | ||
| 31 Mar 26 | By Depreciation A/c | 20,000 | |||||
| 60,000 | 60,000 | ||||||
10. Asset Disposal Account (Sale of Asset)
When an asset is sold or discarded before or at end of useful life, we need to record the disposal. The Asset Disposal Account (or Asset A/c itself if Method A) is used to calculate and record the profit or loss on sale.
Loss on Sale: Sale Price < Book Value at date of sale
Profit on disposal → Cr. of P&L Account. Loss on disposal → Dr. of P&L Account.
Journal entries for disposal under Method B:
| Date | Particulars | L.F. | Dr. (₹) | Cr. (₹) |
|---|---|---|---|---|
| 31 Mar 26 | Asset Disposal A/c Dr. | 1,20,000 | ||
| To Machinery A/c | 1,20,000 | |||
| (Transfer of Machinery cost to Disposal A/c) | ||||
| 31 Mar 26 | Provision for Depreciation A/c Dr. | 60,000 | ||
| To Asset Disposal A/c | 60,000 | |||
| (Transfer of accumulated depreciation to Disposal A/c) | ||||
| 31 Mar 26 | Bank A/c Dr. | 70,000 | ||
| To Asset Disposal A/c | 70,000 | |||
| (Sale proceeds received) | ||||
| 31 Mar 26 | Asset Disposal A/c Dr. | 10,000 | ||
| To Profit & Loss A/c | 10,000 | |||
| (Profit on disposal: ₹70,000 − Net Book Value ₹60,000 = ₹10,000 profit) | ||||
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20 MCQs — Depreciation
Mixed difficulty — meaning, causes, SLM vs WDV calculations, recording methods, disposal. Q17–Q20 are CUET-level numericals.
Chapter 14 — Live Quiz
20 questions · Depreciation · One at a time · Instant feedback

