make adjustments for provision for depreciation using the straight line, reducing balance and revaluation methods

IGCSE Accounting (0452) – Topic 5.1: Adjustments for Provision for Depreciation

Learning Objectives

  • Know the full accounting cycle and where depreciation adjustments fit.
  • Distinguish between capital and revenue items.
  • Calculate depreciation using the Straight‑Line, Reducing‑Balance and Revaluation methods.
  • Prepare the correct journal entries and update the trial balance.
  • Understand the impact on the Profit‑and‑Loss Account and the Balance Sheet for sole traders, partnerships and limited companies.
  • Apply other routine year‑end adjustments (accrued, prepaid, doubtful debts, inventory).


1. The Fundamentals of Accounting (Syllabus Unit 1)

1.1 Purpose of Accounting

  • Provide information for decision‑making, control and accountability.
  • Serve both trading (profit‑seeking) and non‑trading organisations (clubs, societies, charities).

1.2 The Accounting Equation

Assets = Liabilities + Owner’s Equity

1.3 The Accounting Cycle (Four Stages)

  1. Identify & analyse transactions.
  2. Record in the books of prime entry.
  3. Post to the ledger, prepare a trial balance and make adjusting entries.
  4. Prepare final accounts (Profit & Loss, Balance Sheet) and close the books.


2. Sources and Recording of Data (Syllabus Unit 2)

2.1 Key Business Documents

DocumentTypical Use
Invoice (sales & purchase)Evidence of credit sales/purchases
ReceiptProof of cash receipt or payment
Credit note / Debit noteAdjustments to previously issued invoices
Cheque & Bank statementCash‑bank transactions and reconciliation
Purchase orderAuthorises a purchase before receipt of goods
Petty‑cash imprest voucherSmall cash payments (e.g., postage)

2.2 Double‑Entry Principle

  • Every transaction creates at least one debit and one credit of equal value.
  • Debits are recorded on the left, credits on the right of a T‑account.

2.3 Books of Prime Entry (Eight Common Books)

BookTypical Entries
Cash BookAll cash receipts and payments (including bank column)
Sales JournalCredit sales of goods & services
Purchases JournalCredit purchases of goods for resale
Sales Returns JournalGoods returned by customers
Purchases Returns JournalGoods returned to suppliers
General JournalNon‑routine entries (e.g., depreciation, revaluation)
Petty‑Cash BookSmall cash outlays under the imprest system
Bank Reconciliation StatementAdjusts cash‑book balance to match bank statement

2.4 Typical Ledger Layout (T‑Account)

Account Name

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| Date | Ref | Debit | Credit |

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| | | | |

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| Balance (closing) |

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3. Verification of Accounting Records (Syllabus Unit 3)

3.1 Trial Balance

  • Lists all ledger balances to test that total debits = total credits.
  • Detects arithmetical errors but not all (e.g., omission of a whole transaction).

3.2 Common Error Types

  • Omission, commission, principle, compensating, transposition.

3.3 Bank Reconciliation – Sample Statement

ItemAmount ($)
Cash‑book balance (as per bank column)8 200
+ Deposits in transit1 500
– Cheques not yet cleared1 200
– Bank charges (not recorded)30
+ Interest received (not recorded)20
Adjusted cash‑book balance8 490
Bank statement balance8 490

3.4 Control Accounts – Example (Purchases Control)

Purchases Control Account

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Date | Details | Dr | Cr

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01/01 | Opening balance | 12 000 |

31/12 | Purchases | 45 000 |

31/12 | Returns to suppliers| | 3 000

31/12 | Payments to suppliers| | 40 000

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Closing balance (creditors) | 14 000

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Subsidiary ledger (individual creditors) must total $14 000, confirming the control account is correct.


4. Accounting Procedures (Syllabus Unit 4)

4.1 Capital vs. Revenue Items

  • Capital expenditure/receipt: acquisition or disposal of fixed assets, long‑term financing; recorded in the Balance Sheet.
  • Revenue expenditure/receipt: day‑to‑day operating costs or income; recorded in the Profit‑and‑Loss Account.

4.2 Why Depreciation Is Required

  • Fixed assets lose value through wear‑and‑tear, obsolescence or market changes.
  • Depreciation allocates the asset’s cost to the periods that benefit from its use, producing a realistic profit figure.
  • For sole traders and partnerships a Provision for Depreciation (contra‑asset) is used; limited companies credit the asset directly.

4.3 Methods of Calculating Depreciation

4.3.1 Straight‑Line Method (SL)

Same charge each year.

Formula

\$\text{Annual Depreciation} = \frac{\text{Cost} - \text{Residual Value}}{\text{Useful Life (years)}}\$

Journal entry (year‑end)

Debit Depreciation Expense .......... XXX

Credit Provision for Depreciation ... XXX (sole trader/partnership)

or

Credit Accumulated Depreciation ..... XXX (limited company)

Numerical example (SL)

YearDepreciation (\$)Accumulated (\$)Net Book Value ($)
12 0002 00010 000
22 0004 0008 000
32 0006 0006 000
42 0008 0004 000
52 00010 0002 000

4.3.2 Reducing‑Balance (Written‑Down) Method (RB)

Fixed percentage of the opening Net Book Value (NBV) each year.

Formula

\$\text{Depreciation for Year } n = \text{NBV}_{\text{start of year } n} \times \text{Depreciation Rate}\$

Journal entry (year‑end) – same as SL (adjust for entity type).

Numerical example (RB, 20 % rate)

YearNBV at start (\$)Depreciation (\$)NBV at end ($)
115 0003 00012 000
212 0002 4009 600
39 6001 9207 680
47 6801 5366 144
56 1441 2294 915

4.3.3 Revaluation Method

Used when the fair value of an asset changes significantly during its useful life.

  1. Determine the fair (revalued) amount on the revaluation date.
  2. Calculate the accumulated depreciation that *should* have been recorded up to that date (using the chosen method).
  3. Adjust the existing provision (or accumulated depreciation) to the new amount.
  4. Record any increase in a Revaluation Reserve (equity). If the value falls, recognise a loss in the Profit‑and‑Loss Account, or draw down an existing reserve.

Journal entries – increase in value

Debit Fixed Asset (Revaluation) .......... XXX

Credit Revaluation Reserve ................. XXX

Journal entries – decrease in value

Debit Revaluation Reserve ................. XXX

Credit Fixed Asset (Revaluation) .......... XXX

Numerical example (Revaluation, straight‑line)

  • Delivery van: cost \$20 000, residual \$2 000, useful life 8 years.
  • Annual SL charge = (20 000 – 2 000) ÷ 8 = $2 250.
  • After 3 years, accumulated depreciation = 3 × 2 250 = $6 750.
  • Net Book Value before revaluation = 20 000 – 6 750 = $13 250.
  • Fair value at revaluation = \$14 000 → increase of \$750.
  • Journal: Debit Fixed Asset \$750; Credit Revaluation Reserve \$750.

4.3.4 Disposal of Non‑Current Assets

Applies to both partnerships and limited companies.

  1. Calculate the gain or loss:


    Gain/Loss = Sale proceeds – (Cost – Accumulated Depreciation).

  2. Record the disposal in the General Journal.

Journal entry – asset sold for cash (example for a partnership)

Debit Bank ................................... 5 000

Debit Provision for Depreciation .............. 3 000

Credit Fixed Asset – Machinery ................. 8 000

Credit Gain on Disposal ........................ 1 000 (if proceeds > NBV)

For a limited company the asset is credited directly (no provision) and the gain/loss is shown in the Profit‑and‑Loss Account.

4.4 Other Routine Year‑End Adjustments (Revenue Items)

  • Accrued expenses (e.g., wages payable)

    Debit Expense .......... XXX

    Credit Accrued Expenses ... XXX

  • Pre‑paid expenses (e.g., insurance paid in advance)

    Debit Pre‑paid Expense ... XXX

    Credit Cash/Bank .......... XXX

    At year‑end:

    Debit Expense .......... XXX

    Credit Pre‑paid Expense ... XXX

  • Provision for doubtful debts

    Debit Bad Debt Expense .......... XXX

    Credit Provision for Doubtful Debts ... XXX

  • Inventory valuation – lower of cost and NRV

    If NRV < Cost:

    Debit Cost of Goods Sold .......... XXX

    Credit Inventory .................. XXX


5. Preparation of Financial Statements (Syllabus Unit 5)

5.1 Sole Trader

  • Profit & Loss Account – includes Depreciation Expense (or the provision) as an operating expense.
  • Statement of Financial Position – Fixed Assets shown at cost less Provision for Depreciation. Revaluation surplus appears under Revaluation Reserve (equity).
  • All adjustments are made after the trial balance but before the final accounts are drafted.

5.2 Partnership

  • Depreciation treatment identical to a sole trader (provision contra‑asset).
  • Profit is divided between partners after all adjustments.
  • Balance Sheet shows each partner’s capital account, plus any revaluation reserve.

5.3 Limited Company

  • Depreciation is recorded as Depreciation Expense and the asset is credited directly (Accumulated Depreciation is not shown as a separate contra‑asset).
  • Revaluation surplus is shown in “Revaluation Reserve” within shareholders’ equity.
  • Adjustments are summarised in an “Adjustments to Trial Balance” schedule before the final accounts.

5.4 Updating the Trial Balance – Example (Sole Trader, Straight‑Line, Year 1)

Original Trial Balance (excerpt)

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Account Dr Cr

Depreciation Expense 0

Provision for Depreciation 0

Machinery (Fixed Asset) 12 000

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Adjustment (SL, Year 1)

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Debit Depreciation Expense .......... 2 000

Credit Provision for Depreciation ... 2 000

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Adjusted Trial Balance (excerpt)

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Account Dr Cr

Depreciation Expense 2 000

Provision for Depreciation 2 000

Machinery (Fixed Asset) 12 000

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5.5 Sample Final Accounts (Sole Trader)

Profit & Loss Account (excerpt)

Revenue & Gains£
Sales45 000
Less: Cost of Goods Sold27 000
Gross Profit18 000
Depreciation Expense2 000
Net Profit for the year16 000

Statement of Financial Position (excerpt)

Non‑Current Assets£
Machinery (cost)12 000
Less: Provision for Depreciation(2 000)
Net Book Value10 000
Revaluation Reserve750


6. Exam Checklist – What Examiners Look For

  1. Read the question carefully and identify the entity type (sole trader, partnership, limited company).
  2. Choose the correct depreciation method from the wording (straight‑line, reducing‑balance, revaluation).
  3. Show full working:

    • Cost, residual value, useful life, rate, or fair value as required.
    • Calculate the charge for each year (or for the revaluation date).

  4. Prepare the appropriate journal entry:

    • Sole trader/partnership – Debit Depreciation Expense, Credit Provision for Depreciation.
    • Limited company – Debit Depreciation Expense, Credit Accumulated Depreciation (or directly credit the asset).
    • Revaluation – Debit/Credit Fixed Asset and Revaluation Reserve as shown.

  5. Update the trial balance – ensure total debits = total credits after the adjustment.
  6. Show the effect on the final accounts:

    • Depreciation expense reduces profit.
    • Asset’s carrying amount is reduced (or increased) on the Balance Sheet; any reserve appears under Equity.

  7. For disposals, calculate gain/loss correctly and record the sale, removal of the asset, and any gain/loss.
  8. Complete all other required year‑end adjustments (accrued, prepaid, doubtful debts, inventory) before drafting the final accounts.
  9. Check the layout, headings and totals – the examiner awards marks for presentation as well as calculation.

Suggested diagram: Flowchart – “Select depreciation method → Calculate charge → Record journal entry → Update trial balance → Prepare final accounts”.