From temporary differences and tax bases to full journal entries, balance sheet presentation, and worked examples — India's most complete deferred tax reference for accountants and CFOs.
Understanding the fundamental concept of timing and temporary differences
Deferred Tax is the tax effect of temporary differences between the carrying amount of an asset or liability in the financial statements and its tax base (the value attributed to it by the tax authorities). It represents either a future tax obligation or a future tax saving, recognised today on the balance sheet.
The key insight: accounting profit ≠ taxable profit in almost every company. Tax law and accounting standards disagree on the timing of when income and expenses are recognised. Deferred tax bridges this gap by matching the tax impact to the period in which it economically belongs.
🟢 Deferred Tax Asset (DTA)
🔴 Deferred Tax Liability (DTL)
The three root causes of differences between book and tax treatment
Timing Differences
Same income/expense — different year recognised (e.g., depreciation claimed faster in tax)
Rate Differences
Different amounts recognised — e.g., only 50% of entertainment expenses allowed in tax
Permanent Differences
Never reverse — no deferred tax! E.g., fines, penalties (no tax deduction ever)
FV Adjustments
Business combination fair value step-ups — tax base stays at historical cost
Tax Losses
Carried-forward unabsorbed losses create DTA if future profits are probable
| Item | Book Treatment | Tax Treatment | Type | Creates |
|---|---|---|---|---|
| Depreciation on plant | SLM @ 10% | WDV @ 15% (Income Tax) | Temporary | DTL (initially) |
| Provision for bad debts | Recognised in P&L | Allowed only on actual write-off | Temporary | DTA |
| Gratuity provision (AS 15) | Recognised on accrual | Allowed only on actual payment | Temporary | DTA |
| Unrealised profit on inventory (consolidation) | Eliminated in consolidated books | Taxable in subsidiary | Temporary | DTA |
| Revaluation of PPE | Higher carrying amount | Tax base = historical cost | Temporary | DTL (in OCI) |
| Cash flow hedge — OCI reserve | Fair value change in OCI | Taxed/deducted when cash flow occurs | Temporary | DTA or DTL (OCI) |
| Penalty paid | Expense in P&L | Never deductible | Permanent | No Deferred Tax |
| Dividend income (domestic) | Income in P&L | Tax-exempt (Section 10(34)) | Permanent | No Deferred Tax |
| Unabsorbed tax losses (carried forward) | No entry in books | Carry forward offset against future profit | Temporary | DTA (if probable) |
| Revenue recognised upfront (subscription) | Deferred in books over contract term | Taxed in year of receipt | Temporary | DTA |
The tax base is the amount attributed to an asset or liability for tax purposes. Every deferred tax calculation starts here.
Tax Base of an Asset
The amount deductible for tax purposes against any taxable economic benefits that will flow to the entity when the carrying amount is recovered.
Formula: Tax Base of Asset = Amount deductible in future for tax.
Tax Base of a Liability
Carrying amount of the liability, less any amount that will be deductible for tax purposes in future periods in respect of that liability.
Formula: Tax Base of Liability = Carrying Amount − Future Tax Deductions.
Temporary Difference
Temporary Difference = Carrying Amount − Tax Base. If positive on an asset → DTL. If negative on an asset → DTA. The deferred tax = Temporary Difference × Tax Rate.
📐 Worked Example — Tax Base of a Machine
A machine was purchased for ₹10,00,000. Books use SLM depreciation at 10% → after Year 1, Carrying Amount = ₹9,00,000. Tax law uses WDV at 15% → Tax WDV (Tax Base) = ₹8,50,000.
Temporary Difference = ₹9,00,000 − ₹8,50,000 = ₹50,000 (Taxable Temporary Difference — book CA > Tax Base)
DTL = ₹50,000 × 25% = ₹12,500 (future tax obligation when asset is recovered)
A DTA represents income taxes recoverable in future periods — a future tax shield
A Deferred Tax Asset arises when the company has already paid more tax than its book profit requires, OR when it has book expenses not yet deductible for tax. It represents the future tax saving that will materialise when the temporary difference reverses. Think of it as a prepaid tax — the government "owes" the company a tax benefit.
Deductible Temporary Differences
When carrying amount of a liability > its tax base, or carrying amount of an asset < its tax base. Example: Provision for warranty costs raised in books (₹5L), but tax deductible only when actually paid. CA of liability = ₹5L, Tax Base = ₹0 → Deductible temp diff = ₹5L → DTA = ₹5L × 25% = ₹1.25L.
Carried Forward Tax Losses (Unabsorbed Depreciation / Business Loss)
When a company has incurred a tax loss that can be carried forward and set off against future taxable profits. DTA = Unabsorbed Loss × Tax Rate. Critical condition: DTA recognised only if it is probable (virtual certainty under AS 22; probable under Ind AS 12) that sufficient future taxable profits will be available.
Unused Tax Credits (MAT Credit Entitlement)
Minimum Alternate Tax (MAT) paid under Section 115JB creates a MAT Credit Entitlement — a specific type of DTA. The excess of MAT over normal tax can be carried forward for 15 years and set off against normal tax in future years. Recognised as DTA under Ind AS 12 to the extent it is reasonably certain to be utilised.
Revenue Taxed Before Recognition in Books
When tax law taxes income in a period before it is recognised in books. Example: Advance received and taxed immediately, but deferred in books (Ind AS 115). The deferred revenue liability has CA = ₹X but tax base = ₹0 (already taxed), creating a deductible temp diff and DTA.
A DTL represents income taxes payable in future periods — a deferred tax obligation
A Deferred Tax Liability arises when the company has paid less tax currently than its accounting profit implies — because tax law allows faster deductions. The company will pay the additional tax in future when those deductions reverse. It is a real liability — money that will go to the government, just not yet.
Accelerated Tax Depreciation
The most common cause of DTL. Tax law permits higher depreciation than books (WDV vs. SLM, or Section 32 block rates). In early years: Tax depreciation > Book depreciation → Taxable profit < Book profit → Tax paid is less → DTL arises. This reverses in later years when book depreciation exceeds tax depreciation.
Revaluation of Assets (OCI Route)
When PPE or investments are revalued upward under Ind AS, the carrying amount increases but the tax base remains at historical cost. The taxable temporary difference = Revaluation surplus. DTL is recognised in OCI (not P&L) alongside the revaluation gain. On disposal of the asset, both the revaluation surplus and the DTL reverse.
Business Combination — Fair Value Step-Ups
In a business combination, acquired assets are recognised at fair value but their tax base remains at the acquired company's historical cost (no tax step-up). The fair value excess = taxable temporary difference → DTL. This DTL increases goodwill (since it increases net liabilities recognised, reducing net assets acquired).
Development Costs Capitalised
Where development costs are capitalised as an intangible asset under Ind AS 38 but are fully expensed for tax purposes in the year incurred. CA of intangible > Tax Base (₹0) → taxable temp diff → DTL. As the intangible is amortised, the DTL reverses proportionally.
Full double-entry bookkeeping for every deferred tax scenario with narrations
When accelerated tax depreciation results in taxable income being lower than book income (carrying amount > tax base of asset).
| Account | Dr/Cr | Debit (₹) | Credit (₹) |
|---|---|---|---|
| Income Tax Expense A/c (Deferred) | Dr | 12,500 | — |
| To Deferred Tax Liability A/c | Cr | — | 12,500 |
| Total | 12,500 | 12,500 | |
When book expenses exceed tax-deductible expenses in the current year — the deduction will come in future (e.g., gratuity provision).
| Account | Dr/Cr | Debit (₹) | Credit (₹) |
|---|---|---|---|
| Deferred Tax Asset A/c | Dr | 25,000 | — |
| To Income Tax Expense A/c (Deferred) | Cr | — | 25,000 |
| Total | 25,000 | 25,000 | |
As the asset gets older, book WDV may exceed tax WDV and the timing difference starts to reverse.
| Account | Dr/Cr | Debit (₹) | Credit (₹) |
|---|---|---|---|
| Deferred Tax Liability A/c | Dr | 8,750 | — |
| To Income Tax Expense A/c (Deferred) | Cr | — | 8,750 |
| Total | 8,750 | 8,750 | |
| Account | Dr/Cr | Debit (₹) | Credit (₹) |
|---|---|---|---|
| Income Tax Expense A/c (Deferred) | Dr | 25,000 | — |
| To Deferred Tax Asset A/c | Cr | — | 25,000 |
| Total | 25,000 | 25,000 | |
| Account | Dr/Cr | Debit (₹) | Credit (₹) |
|---|---|---|---|
| Deferred Tax Asset A/c | Dr | 2,50,000 | — |
| To Income Tax Expense A/c (Deferred) | Cr | — | 2,50,000 |
| Total | 2,50,000 | 2,50,000 | |
When assets are revalued upward under Ind AS, both the revaluation surplus and the related DTL go through OCI — not P&L.
| Account | Dr/Cr | Debit (₹) | Credit (₹) |
|---|---|---|---|
| Land / Building A/c (PPE) | Dr | 40,00,000 | — |
| To Revaluation Surplus A/c (OCI) | Cr | — | 30,00,000 |
| To Deferred Tax Liability A/c | Cr | — | 10,00,000 |
| Total | 40,00,000 | 40,00,000 | |
When MAT paid exceeds normal income tax payable, the excess is recognised as a deferred tax asset.
| Account | Dr/Cr | Debit (₹) | Credit (₹) |
|---|---|---|---|
| Income Tax Expense A/c (Current) | Dr | 8,00,000 | — |
| MAT Credit Entitlement A/c (DTA) | Dr | 2,00,000 | — |
| To Advance Income Tax / TDS A/c | Cr | — | 8,00,000 |
| To Income Tax Expense A/c (Deferred) | Cr | — | 2,00,000 |
| Total | 10,00,000 | 10,00,000 | |
| Account | Dr/Cr | Debit (₹) | Credit (₹) |
|---|---|---|---|
| Income Tax Expense A/c (Deferred) | Dr | 1,50,000 | — |
| To Deferred Tax Asset A/c | Cr | — | 1,50,000 |
| Total | 1,50,000 | 1,50,000 | |
Full balance sheet method computation for real scenarios with all deferred tax calculations
🔢 Example 1: Depreciation Timing Difference (3-Year Working)
Situation: Machine purchased for ₹10,00,000. Book: SLM 10% = ₹1,00,000/year. Tax: WDV 15%. Tax rate 25%.
| Year | Book WDV (₹) | Tax WDV (₹) | Taxable Temp Diff (₹) | DTL Required (₹) | Opening DTL (₹) | DTL Movement (₹) | Entry |
|---|---|---|---|---|---|---|---|
| Year 1 | 9,00,000 | 8,50,000 | 50,000 | 12,500 | — | +12,500 (create) | Dr Tax Exp · Cr DTL |
| Year 2 | 8,00,000 | 7,22,500 | 77,500 | 19,375 | 12,500 | +6,875 (increase) | Dr Tax Exp · Cr DTL |
| Year 3 | 7,00,000 | 6,14,125 | 85,875 | 21,469 | 19,375 | +2,094 (increase) | Dr Tax Exp · Cr DTL |
| Year 8+ | Lower | Higher | Reverses | Decreasing | — | Reversal begins | Dr DTL · Cr Tax Exp |
🔢 Example 2: Full Balance Sheet Method Computation (Ind AS 12)
Situation: Year-end analysis of ABC Ltd showing all assets and liabilities, their carrying amounts, and tax bases. Tax rate 25%.
| Asset / Liability | Carrying Amount (₹) | Tax Base (₹) | Temp Diff (₹) | Type | DTA / DTL (₹) |
|---|---|---|---|---|---|
| Plant & Machinery | 45,00,000 | 38,00,000 | 7,00,000 | Taxable | DTL: 1,75,000 |
| Freehold Land (revalued) | 1,00,00,000 | 60,00,000 | 40,00,000 | Taxable | DTL: 10,00,000 (OCI) |
| Trade Receivables | 20,00,000 | 20,00,000 | — | Nil | — |
| Provision for Bad Debts (Liability) | 3,00,000 | 0 | 3,00,000 | Deductible | DTA: 75,000 |
| Gratuity Payable (Liability) | 8,00,000 | 0 | 8,00,000 | Deductible | DTA: 2,00,000 |
| Unabsorbed Tax Loss (Asset) | — | 10,00,000 | 10,00,000 | Deductible | DTA: 2,50,000 |
| NET Position | DTL (P&L): 1,75,000 | DTA: 5,25,000 DTL (OCI): 10,00,000 (separate) |
How and when deferred tax balances unwind — and their P&L/OCI impact
Year of Creation
Deferred Tax Recognised — Temporary Difference at Maximum
The DTL or DTA is first recognised when the temporary difference between carrying amount and tax base arises. Tax expense in P&L includes both current tax and deferred tax movement. The deferred tax balance builds up year by year as long as the difference widens.
Inflection Point
Temporary Difference Peaks — Balance at Maximum
For DTL on depreciation, the difference peaks when tax WDV falls below book WDV (typically mid-life of asset when WDV tax rate starts generating less depreciation than SLM). For DTA on provisions, the balance peaks when the full provision is outstanding.
Reversal Phase
Temporary Difference Reverses — DTL/DTA Reduces
DTL reverses: when tax depreciation in a year falls below book depreciation (asset has high book value but lower tax WDV). DTA reverses: when the expense that created it is finally allowed for tax (e.g., provision paid). Reversal reduces the deferred tax charge, improving reported profit.
Full Reversal
Balance Reaches Zero — Deferred Tax Fully Extinguished
At the end of the asset's life (or when the provision is fully paid), the temporary difference is zero and the deferred tax balance is nil. Over the life of the asset, the total tax expense equals the tax on accounting profit — timing has simply been smoothed.
How DTA and DTL appear in the financial statements under Ind AS 12
DTA — Non-Current Asset
Deferred Tax Asset is always classified as a non-current asset on the balance sheet. It cannot be split into current/non-current components — the entire balance is non-current under Ind AS 1. Presented under the head "Non-Current Assets → Financial Assets → Others" or as a separate line item.
DTL — Non-Current Liability
Deferred Tax Liability is always classified as a non-current liability. Like DTA, it is not split. Presented under "Non-Current Liabilities → Deferred Tax Liabilities (Net)" if exceeds DTA; or netted and shown under assets if DTA > DTL. Must be shown gross if relating to different tax jurisdictions.
Offset (Netting) — When Allowed
Under Ind AS 12, DTA and DTL can be offset (netted) only if: (a) same tax authority, (b) same taxable entity, and (c) legally enforceable right to set off current tax assets against current tax liabilities. If all three met → show one net line. Otherwise → show gross on both sides.
P&L — Tax Expense Line
Total income tax expense in P&L = Current Tax + Deferred Tax. Deferred tax charge (when DTL increases or DTA decreases) increases total tax. Deferred tax credit (when DTA increases or DTL decreases) reduces total tax. Disclosure: break between current tax and deferred tax is mandatory.
Reconciliation of Tax Charge to Accounting Profit
Numerical reconciliation between: (a) tax expense calculated at applicable statutory rate × accounting profit, and (b) actual tax expense. Must explain each significant reconciling item (permanent differences, rate changes, unrecognised DTAs, etc.). This is the most scrutinised deferred tax disclosure.
Unrecognised DTA Disclosure
If a DTA has not been recognised because probability of future profits is not met, the amount of the unrecognised DTA must be disclosed. This includes: unrecognised DTA on tax losses, unrecognised DTA on deductible temporary differences, and the expiry date of tax losses (where applicable). Analysts closely watch this note.
Movement Schedule in Notes
A roll-forward table showing: opening DTA/DTL balance, created during year, reversed during year, recognised in OCI during year, effect of rate change, and closing balance — broken down by major categories (depreciation, provisions, losses, etc.). Required for each significant category of temporary difference.
Understanding the lifecycle and composition of deferred tax balances
DTL Life Cycle — Depreciation Timing Difference
Balance builds in early years, reverses in later years (₹ illustrative)
Common Sources of DTA vs DTL (Indian Companies)
Typical breakdown of deferred tax balance components
DTA Recognition — Probability Spectrum
When to recognise DTA based on evidence of future profits
Tax Expense Split: Current vs. Deferred
Illustrative split across growth phases of a company
Critical steps every finance team must perform before closing the books
The most searched deferred tax questions answered with precision
AS 22 (Income Statement Approach): Deferred tax is computed by comparing accounting profit with taxable profit. Only timing differences that originate in one period and reverse in another are considered. Permanent differences (like donations, fines) are explicitly excluded. AS 22 uses the concept of "timing differences" — the difference between taxable income and accounting income that originates in one period and reverses in one or more subsequent periods.
Ind AS 12 (Balance Sheet / Temporary Difference Approach): Deferred tax is computed by comparing the carrying amount of every asset and liability with its tax base. This is broader — it captures items that don't flow through the income statement (like revaluation in OCI, business combination fair value adjustments). Under Ind AS 12, the concept is "temporary differences" — which includes all timing differences PLUS items that affect the balance sheet directly. As a result, Ind AS 12 catches more deferred tax situations than AS 22.
Zerolev's accounting guides cover every complex standard — from Deferred Tax and Business Combinations to Ind AS 116 Leases and Hedge Accounting — with journal entries, worked examples, and disclosure checklists.