7.1 IAS 12 Balance Sheet Liability Method & Current Tax

7.1 IAS 12 Balance Sheet Liability Method & Current Tax

Core Principle: Tax accounting under IAS 12 / AASB 112 is anchored in the Statement of Financial Position. Rather than asking when revenues and expenses should match in the income statement, the standard asks what future tax consequences will arise when the carrying amount of an asset is recovered or the carrying amount of a liability is settled.

In financial reporting, commercial entities operate under two parallel reporting regimes: general purpose financial reporting governed by International Financial Reporting Standards (IFRS) (and Australian Accounting Standards, AASB), and statutory tax reporting governed by local taxation legislation (such as the Income Tax Assessment Act 1936 and 1997 in Australia, ITAA). Because accounting rules and taxation statutes pursue fundamentally divergent objectives—financial reporting seeks a faithful representation of economic performance and financial position, whereas tax law pursues revenue collection and social or economic policy—the timing and recognition of income and expenses inevitably diverge.

For candidates sitting the CPA Australia Financial Reporting examination, mastering IAS 12 Income Taxes requires understanding both current tax obligations and the balance sheet liability method of deferred tax accounting.

---

1. The Evolution of Tax Accounting: Income Statement vs Balance Sheet Liability Method

To master IAS 12, preparers must understand why standard-setters abandoned the historical "income statement timing difference" approach in favor of the "balance sheet liability method".

The Historical Approach: Income Statement Timing Differences (Superseded)

Under earlier accounting conventions (such as the original 1979 version of IAS 12 and the superseded Australian standard AASB 1020), tax accounting focused exclusively on the Statement of Profit or Loss. Preparers identified timing differences—items of revenue or expense that entered into both accounting profit and taxable profit, but in different accounting periods.

While intuitive, this approach suffered from fatal conceptual limitations:

• Ignored Balance Sheet Revaluations: When an entity revalued land, buildings, or intangible assets directly to equity (Other Comprehensive Income) under IAS 16 or IAS 38, no timing difference arose in profit or loss. As a result, the substantial future tax liability associated with recovering the revalued asset was completely omitted from the balance sheet.
• Failed in Business Combinations: In an acquisition accounted for under IFRS 3, assets and liabilities are recognized at fair value, often creating large differences between balance sheet values and existing tax bases. Because these fair value adjustments never passed through profit or loss, the income statement method could not properly account for the resulting tax obligations.
• Conflict with Conceptual Framework: The resulting deferred tax balances did not represent genuine present legal obligations or enforceable economic resources under the Conceptual Framework for Financial Reporting; they were merely deferred debit and credit bookkeeping balances created to smooth income statement tax expense.

The Modern Balance Sheet Liability Method (Current IAS 12 / AASB 112)

In response to these deficiencies, the International Accounting Standards Board (IASB) adopted the balance sheet liability method (also known as the temporary difference approach). Under this framework:

1. The financial statements inherently imply that an entity will recover the carrying amount of its assets (through use or sale) and settle the carrying amount of its liabilities.
2. When an asset's carrying amount is recovered or a liability's carrying amount is settled, there will be tax consequences.
3. Deferred tax is determined by comparing the carrying amount of every asset and liability on the balance sheet with its statutory tax base.
4. Any resulting difference is a temporary difference that directly measures the future tax cash flows that will occur when the asset or liability is recovered or settled.

2. Accounting Profit vs Taxable Profit: The Two Profit Paradigms

To calculate tax obligations, preparers must clearly distinguish between accounting profit and taxable profit:

Definitions under IAS 12.5

• Accounting Profit: Profit or loss for a period before deducting tax expense, determined in accordance with IFRS / AASB standards.
• Taxable Profit (Tax Loss): The profit (loss) for a period, determined in accordance with the rules established by the taxation authorities, upon which income taxes are payable (recoverable).

The difference between accounting profit and taxable profit arises from two distinct categories of differences:

                    Differences Between Accounting & Taxable Profit
                                          │
             ┌────────────────────────────┴────────────────────────────┐
             ▼                                                         ▼
    Permanent Differences                                     Temporary Differences
    • Enter accounting profit but NEVER                       • Enter both accounting profit and
      enter taxable profit (or vice versa).                     taxable profit, but in DIFFERENT periods.
    • Never reverse in future periods.                         • Originate in one period and REVERSE
    • Affect current tax and Effective                          in subsequent periods.
      Tax Rate (ETR).                                         • Give rise to Deferred Tax Assets (DTA)
    • NEVER generate Deferred Tax!                             or Deferred Tax Liabilities (DTL).

Permanent Differences

Permanent differences represent items of income or expense that are recognized for accounting purposes but will never be recognized for tax purposes, or items allowed for tax purposes that never pass through accounting profit.

Common examples include:

• Government Fines and Regulatory Penalties: Incurred for breaches of environmental, corporate, or transport laws. Recognized as operating expenses in accounting profit, but strictly disallowed as tax deductions under taxation law (e.g. s 26-5 of the Australian ITAA 1997).
• Non-Deductible Entertainment Expenses: Corporate entertainment and client dining recognized as selling/administrative expenses in profit or loss, but non-deductible under tax rules.
• Exempt or Non-Assessable Income: Income that tax law makes exempt or non-assessable non-exempt (NANE), such as a government grant designated as NANE, or a foreign dividend received by an Australian company holding a participation interest of at least 10% (s 768-5 ITAA 1997).
• Super-Deductions: Statutory schemes that allow a deduction greater than 100% of the expenditure; the excess deduction above cost never reverses.

Exam Rule — Permanent Differences & Deferred Tax: Permanent differences adjust accounting profit to determine the current tax liability. Because they never reverse, permanent differences NEVER give rise to deferred tax assets or deferred tax liabilities. Instead, they cause the entity's Effective Tax Rate (ETR) to diverge from the statutory tax rate.

Temporary Differences

Temporary differences arise where an item of income or expense is recognized for both accounting and tax purposes, but the timing of recognition differs. For example, an item is recognized in accounting profit in Year 1 but in taxable profit in Year 2. Because these differences reverse over time, they give rise to deferred tax assets and deferred tax liabilities, as explored in Sections 7.2 through 7.4.

---

3. Current Tax Computation & Enacted / Substantively Enacted Rates

Under IAS 12.5, current tax is defined as:

The amount of income taxes payable (recoverable) in respect of the taxable profit (tax loss) for a period.

General Computation Formula

$$\text{Current Tax Liability / (Asset)} = \text{Taxable Profit / (Tax Loss)} \times \text{Applicable Tax Rate } (\tau)$$

To arrive at taxable profit from accounting profit, preparers prepare a tax reconciliation schedule:

$$\begin{aligned} \text{Accounting Profit Before Tax} & \\ \pm & \quad \text{Permanent Differences (Add non-deductible expenses; Deduct exempt income)} \\ \pm & \quad \text{Temporary Differences (Adjust for differences between accounting and tax timing)} \\ = & \quad \mathbf{\text{Taxable Profit (or Tax Loss)}} \end{aligned}$$

Enacted or Substantively Enacted Tax Rates (IAS 12.46)

Paragraph 46 of IAS 12 establishes a strict measurement mandate:

Current tax liabilities (assets) for the current and prior periods shall be measured at the amount expected to be paid to (recovered from) the taxation authorities, using the tax rates (and tax laws) that have been enacted or substantively enacted by the end of the reporting period.

What Constitutes "Substantively Enacted"?

A tax rate is enacted when it has completed the entire legislative process and received formal head-of-state approval (e.g. Royal Assent in Australia, the UK, and Commonwealth jurisdictions, or presidential signature in the United States).

However, IAS 12 explicitly allows measurement using substantively enacted rates by the balance sheet date. The standard recognizes that in parliamentary democracies, a tax rate change may be effectively certain before formal assent is finalized:

• In Australia: AASB 112 does not define substantive enactment. In its December 2012 agenda decision (made when it withdrew Interpretation 1039), the AASB observed that significant uncertainty about a tax bill's outcome is rarely removed before a non-linked bill has passed both Houses of Parliament, and rarely remains once it has passed both Houses, even though Royal Assent follows later. In practice, a rate change is therefore usually treated as substantively enacted once the bill has passed both the House of Representatives and the Senate.
• Government Announcements Are Insufficient: A mere announcement by the Treasurer or Minister for Finance in a federal budget speech does not constitute substantive enactment. Until that point is reached, the existing enacted tax rate continues to be used.

Current Tax Assets (Tax Refunds and Loss Carryback)

Under IAS 12.12, if the amount of tax already paid in respect of the current and prior periods exceeds the amount due for those periods (e.g. through quarterly Pay-As-You-Go [PAYG] instalments), the excess shall be recognized as a Current Tax Asset.

Similarly, where tax legislation permits an entity to carry back a current tax loss against taxable profits of prior periods, the entity recognizes a current tax asset in the period of the loss, as the refund is an enforceable present legal right (IAS 12.13).

---

4. Prior-Period Under- or Over-Provisions (IAS 12.80(b))

At the end of each reporting period, an entity estimates its current tax payable because the official corporate tax return is typically prepared, audited, and lodged with the taxation authority several months after the financial statements are published.

When the final tax return is lodged, the tax authority may assess a liability that differs from the original balance sheet estimate, or subsequent audits may adjust prior tax calculations.

Accounting Mechanism: Prospective Adjustment in Profit or Loss

Paragraph 80(b) of IAS 12 explicitly mandates that any adjustment recognized in the period for current tax of prior periods must be recognized in the Statement of Profit or Loss as a component of the current period's tax expense.

$$\text{Total Current Tax Expense (P/L)} = \text{Current Year Tax Payable} \pm \text{Prior Period Under/(Over) Provision}$$

• Under-provision: Actual tax assessed for prior period > Estimated tax provided in prior period $\implies$ Add to current tax expense (Debit P/L).
• Over-provision: Actual tax assessed for prior period < Estimated tax provided in prior period $\implies$ Deduct from current tax expense (Credit P/L).

Why It Is NOT an IAS 8 Prior-Period Error

Candidates frequently wonder why prior-period under- or over-provisions are not treated as retrospective error corrections under IAS 8 Accounting Policies, Changes in Accounting Estimates and Errors.

Under IAS 8.5 and IAS 12, income tax estimates are recognized as changes in accounting estimates. Because corporate tax rules are complex and require interpretations of deductibility, differences between reasonable management estimates and final tax assessments are natural consequences of the estimation process. Therefore, they are accounted for prospectively in current profit or loss.

Exam Distinction: A prior-period tax adjustment is treated as an IAS 8 prior-period error requiring retrospective restatement only if the original provision was made in bad faith, involved mathematical fraud, or ignored reliable factual information that was available when the prior financial statements were authorized for issue.

---

5. Comprehensive Worked Scenario: Current Tax Computation

Scenario Parameters

Pacifica Logistics Ltd reports an Accounting Profit Before Tax of $2,400,000 for the financial year ended 30 June 2026. The enacted corporate tax rate is 30%.

The company's financial records reveal the following transactions during the year:

1. Government Environmental Fine: Pacifica paid $80,000 in statutory fines to the Environmental Protection Authority for an unpermitted diesel spill. (Disallowed for tax).
2. Exempt Clean Energy Grant: Pacifica received $120,000 from a government clean energy transition fund. This grant is formally designated as non-assessable non-exempt (NANE) income under federal tax statutes.
3. Accounting vs Tax Depreciation:
   • Accounting depreciation on plant and equipment: $350,000
   • Tax depreciation (capital allowances claimed under tax rules): $520,000
4. Warranty Provision Movements:
   • Warranty expense recognized in profit or loss: $160,000
   • Actual cash paid to settle warranty claims during 2026: $60,000
5. Employee Long Service Leave Provision:
   • Long service leave expense recognized in profit or loss: $90,000
   • Actual cash paid to employees taking leave during 2026: $30,000
6. Prior Year Tax Adjustment:
   • In October 2025, Pacifica completed its final tax return for the year ended 30 June 2025. The actual tax assessed was $685,000. In the 30 June 2025 financial statements, the current tax liability had been estimated at $655,000. The $30,000 under-provision was paid in October 2025.
7. PAYG Tax Instalments:
   • Pacifica paid four quarterly Pay-As-You-Go (PAYG) income tax instalments totaling $540,000 during the 2025-26 financial year.

---

Step 1: Reconcile Accounting Profit to Taxable Profit

Mathematical Summary of Taxable Profit:

$$\begin{aligned} \text{Taxable Profit} &= \$2,400,000 + \$80,000 - \$120,000 + \$350,000 - \$520,000 \\ &\quad + \$160,000 - \$60,000 + \$90,000 - \$30,000 \\ &= \mathbf{\$2,350,000} \end{aligned}$$

---

Step 2: Calculate Current Tax Liability and Total Current Tax Expense

1. Gross Current Tax Liability for 2025–26:

$$\text{Current Tax Liability (Gross)} = \$2,350,000 \times 30\% = \mathbf{\$705,000}$$

1. Net Current Tax Payable at 30 June 2026 (Statement of Financial Position):

$$\begin{aligned} \text{Net Tax Payable} &= \text{Gross Current Tax Liability} - \text{PAYG Instalments Paid} \\ &= \$705,000 - \$540,000 = \mathbf{\$165,000} \end{aligned}$$

1. Current Tax Expense Recognized in Profit or Loss (IAS 12.80(a), (b)):

$$\begin{aligned} \text{Current Year Tax Charge} & \quad \$705,000 \\ \text{Add: Prior-Period Under-Provision (IAS 12.80(b))} & \quad + \$30,000 \\ \textbf{Total Current Tax Expense in Profit or Loss} & \quad \mathbf{\$735,000} \end{aligned}$$

---

Step 3: Journal Entries for Current Tax at 30 June 2026

1. Recognizing the Current Year Tax Expense and Liability:

$$\begin{aligned} \textbf{Dr} & \quad \text{Current Tax Expense (Profit or Loss)} & \$705,000 & \\ \textbf{Cr} & \quad \text{Current Tax Payable (Liability)} & & \$705,000 \end{aligned}$$

1. Offsetting PAYG Instalments Paid During the Year:

$$\begin{aligned} \textbf{Dr} & \quad \text{Current Tax Payable (Liability)} & \$540,000 & \\ \textbf{Cr} & \quad \text{Prepaid Tax / PAYG Instalments (Asset)} & & \$540,000 \end{aligned}$$

(Leaving a net Current Tax Payable of $165,000 in Current Liabilities).

1. Recording the Prior Period Under-Provision: (Note: This entry was recorded in October 2025 when paid upon assessment):

$$\begin{aligned} \textbf{Dr} & \quad \text{Income Tax Expense — Prior Period Adjustment (P/L)} & \$30,000 & \\ \textbf{Cr} & \quad \text{Cash at Bank} & & \$30,000 \end{aligned}$$

---

Step 4: Verification of Effective Tax Rate (ETR)

Pacifica's effective tax rate can be examined to demonstrate the impact of permanent differences:

$$\text{Accounting Profit} \times 30\% = \$2,400,000 \times 30\% = \$720,000$$

Tax effect of permanent differences:

• Non-deductible fine: +$80,000 $\times$ 30% = +$24,000
• Exempt grant: -$120,000 $\times$ 30% = -$36,000
• Net permanent difference tax impact: -$12,000

$$\text{Tax on Profit before Temporary Differences} = \$720,000 - \$12,000 = \$708,000$$

Current tax of $705,000 equals $708,000 less $3,000 (30% of the net $10,000 of temporary differences deducted in the reconciliation). Once deferred tax is recognised on those temporary differences (Sections 7.3–7.4), total current and deferred tax for the year returns to $708,000, before the $30,000 prior-year adjustment. This reconciliation forms the foundation for the mandatory tax disclosures examined in Chapter 8.