Just a moment...

Top
Help
×

By creating an account you can:

Logo TaxTMI
Call Us / Help / Feedback

Contact Us At :

E-mail: [email protected]

Call / WhatsApp at: +91 99117 96707

For more information, Check Contact Us

FAQs :

To know Frequently Asked Questions, Check FAQs

Most Asked Video Tutorials :

For more tutorials, Check Video Tutorials

Submit Feedback/Suggestion :

Email :
Please provide your email address so we can follow up on your feedback.
Category :
Description :
Min 15 characters0/2000
Make Most of Text Search
  1. Checkout this video tutorial: How to search effectively on TaxTMI.
  2. Put words in double quotes for exact word search, eg: "income tax"
  3. Avoid noise words such as : 'and, of, the, a'
  4. Sort by Relevance to get the most relevant document.
  5. Press Enter to add multiple terms/multiple phrases, and then click on Search to Search.
  6. Text Search
  7. The system will try to fetch results that contains ALL your words.
  8. Once you add keywords, you'll see a new 'Search In' filter that makes your results even more precise.
  9. Text Search
Add to...
You have not created any category. Kindly create one to bookmark this item!
Create New Category
Hide
Title :
Description :
❮❮ Hide
Default View
Expand ❯❯
Close ✕
🔎 TMI Notes - Adv. Search
TEXT SEARCH:

Press 'Enter' to add multiple search terms. Rules for Better Search

Search In:
Main Text + AI Text
  • Main Text
  • Main Text + AI Text
  • AI Text
Law:
---- All Laws----
  • ---- All Laws----
  • Benami Property
  • Bill
  • Central Excise
  • Companies Law
  • Customs
  • DGFT
  • FEMA
  • GST
  • GST - States
  • IBC
  • Income Tax
  • Indian Laws
  • Money Laundering
  • SEBI
  • SEZ
  • Service Tax
  • VAT / Sales Tax
Types:
---- All Types ----
  • ---- All Types ----
  • Act Rules
  • Case Laws
  • Circulars
  • Manuals
  • News
  • Notifications
Sort By: ?
In Sort By 'Default', exact matches for text search are shown at the top, followed by the remaining results in their regular order.
RelevanceDefaultDate
    Liberalizing Silver Imports: Analyzing the Impact of DGFT Notification No. 57/2023 on India's Trade ...
    Extension of the existing concessional import duties on specified edible oils up to and inclusive of...
    Levy of Export Duty on Molasses Exports
    Act RulesCustoms
    Anti-Dumping Duties: A Comprehensive Analysis of the Customs Tariff Act, 1975
    Analysis of Recent Anti-Dumping Duty Imposition on Meta Phenylene Diamine Imports from China to Indi...
    NotificationsCentral Excise
    Analyzing the Implications of Central Excise Duty Changes on Petroleum Products
    Challenges in corporate insolvency, particularly when dealing with contract terminations and arbitra...
    Case LawsCustoms
    Analyzing the Legal Dispute in Customs regarding provisional assessment: A Case of Procedural Lapses...
    Case LawsIncome Tax
    Deduction u/s 80P: Navigating the Legal Labyrinth - Co-operative Societies Vis-a-vis Co-operative ba...
    Transition to the GST regime. Legal challenges posed by the GST regime on existing government contra...
    Case LawsIncome Tax
    Navigating Legal Complexities - Assessment in case of third parties post search and seizure - The pe...
    Case LawsIncome Tax
    Scope of compliance of the Document Identification Number (DIN) in tax communications​​.
    Supreme Court's Scrutiny of ED's Conduct: Upholding Legal Standards in Arrest and Remand Procedures
    GST: transportation of goods, the role of e-way bills, and the implications of their cancellation - ...
    Case LawsCustoms
    Legality of Value Enhancement for the import of goods on the basis of allegation of Under-invoicing ...
    Equality in Financial Creditor Status: The Supreme Court's Ruling in regarding the status of home bu...
    Case LawsIncome Tax
    Navigating the Nuances of Capital vs Revenue Expenditure: The Asian Hotels Ltd. Case Analysis
    Case LawsCentral Excise
    Demand based on Form-26AS information from the Income Tax Department, without pre-show cause notice ...
    Importance of transparency in corporate governance and the rights of minority shareholders
    The case of Manish Sisodia versus CBI and DoE is not just a legal battle but also a matter of signif...
❯❯
MaximizeMaximizeMaximize
0 / 200
Expand Note
Add to Folder

No Folders have been created

    +

    Are you sure you want to delete "My most important" ?

    NOTE:

    Notes
    Showing Results for :
    Reset Filters
    Results Found:
    Show All SummariesHide All Summaries
    NotificationsDGFT
    Show AI Summary
    Liberalizing silver imports: expanding free actual user access and enabling bullion exchange imports to boost industrial inputs.
    Amendment to import policy for silver under Chapter 71 of ITC (HS) 2022 classifies semi manufactured silver as Free on an Actual User basis for specified manufacturing sectors and permits R&D imports by government or recognised institutions; it also revises HS code treatment to allow qualified jewellers to import via a recognised bullion exchange, expanding import access beyond nominated agencies.
    NotificationsCustoms
    Show AI Summary
    Concessional import duties on specified edible oils extended, preserving customs and AIDC exemptions to support supply and affordability.
    Notification No. 02/2024 amends Notifications Nos. 48/2021 and 49/2021 to extend the concessional import duty treatment and the exemption from the Agriculture Infrastructure and Development Cess for specified edible oils, preserving customs duty relief for listed soybean, palm and sunflower oil categories to maintain lower import costs and supply continuity.
    NotificationsCustoms
    Show AI Summary
    Export duty on molasses imposed to secure domestic supply for ethanol blending and reduce fuel import reliance.
    A 50% export duty has been added to the Second Schedule of the Customs Tariff Act, effective January 18, 2024, using the government's urgent power to levy export duties, to restrict molasses exports and increase domestic supply for ethanol production and to address sugar shortages and fuel-import dependence.
    Act RulesCustoms
    Show AI Summary
    Anti-dumping duties protect domestic industry by allowing provisional and retrospective measures and circumvention checks on dumped imports.
    Anti-dumping duties under the Customs Tariff Act, 1975 define anti-dumping duties, margin of dumping, export price and normal value, and set methods to determine dumping when direct comparisons are infeasible. The statute provides anti-circumvention and duty-absorption rules, permits provisional duties based on preliminary findings and retrospective duties in certain large cases, and allows conditional exemptions for consignments to export-oriented units and special economic zones.
    NotificationsCustoms
    Show AI Summary
    Anti-dumping duty continuation on Meta Phenylene Diamine from China preserves domestic industry protection under sunset review recommendation.
    Continuation of anti-dumping duty on Meta Phenylene Diamine from China follows a sunset review finding continued dumping and injury to the domestic industry; the government imposed differentiated per-metric-ton duties on a named Chinese producer and other exporters, including imports from other countries exported via China, to be levied for a five-year period unless earlier revoked, superseded or amended and payable in Indian currency.
    NotificationsCentral Excise
    Show AI Summary
    Special Additional Excise Duty reduction may lower government revenues and influence fuel pricing and consumption.
    Notification No. 03/2024 amends Notification No. 18/2022 by reducing the Special Additional Excise Duty on production of petroleum crude, directly altering the statutory excise rate and thereby affecting government excise revenue, oil company margins and pricing incentives, potential consumer fuel prices given other tax and market factors, and environmental consumption incentives.
    Case LawsIBC
    Show AI Summary
    Wrongful invocation of bank guarantees not upheld where arbitration covers claims; liquidator may refile under insolvency law.
    The appellate tribunal found the liquidator's claims, including allegations of wrongful invocation of bank guarantees, were encompassed by pending arbitration and upheld deletion of the concessionaire from the insolvency-era causative-misconduct application, while permitting the liquidator to file a fresh insolvency application should subsequent arbitration facts necessitate separate action.
    Case LawsCustoms
    Show AI Summary
    Provisional assessment compliance: non-deliberate document delays without revenue impact warrant nominal penalties under provisional assessment rules.
    The tribunal examined Regulation 5 penalties for delayed document submission under the Customs (Provisional Duty Assessment) Regulations, noting absence of mala fide conduct and no revenue implication. Emphasizing proportionality, the tribunal treated non-deliberate, revenue-neutral delays as warranting a nominal sanction rather than the maximum prescribed penalty, balancing enforcement of document-submission requirements with the factual context of compliance.
    Case LawsIncome Tax
    Show AI Summary
    Co-operative bank classification: licensing requirement determines cooperative societies' tax deduction eligibility under section 80P provisions.
    Eligibility for deduction under Section 80P depends on whether a cooperative society qualifies as a co-operative bank, which in turn requires evaluation of statutory definitions and the regulatory requirement of licensing under the Banking Regulation Act read with the NABARD Act and state cooperative laws; classification hinges on regulatory status and banking activity rather than merely providing credit to members.
    Case LawsGST
    Show AI Summary
    GST impact on government contracts: administrative review required to address tax liabilities and update contract pricing.
    Applicability of GST to government contracts where SOR and BOQ were not updated, creating additional tax liabilities; responsibility for incorporating the new tax regime into contract pricing and the administrative duty to address resultant tax increments. The court directed a formal representation process and a reasoned administrative decision after departmental consultation, with no coercive action to be taken against the petitioner pending resolution.
    Case LawsIncome Tax
    Show AI Summary
    Interpretation of Section 153C limits third party assessment timelines to when seized materials reach the Assessing Officer.
    The Supreme Court held that, for third parties found via search and seizure, the period for which returns must be filed is measured from the date seized materials are forwarded to the relevant Assessing Officer rather than from the date of the original search. The Court read Sections 153A and 153C to avoid unduly prejudicing uninvolved third parties and to prevent excessive record-retention and procedural burden, endorsing a fair, plain-language construction aligned with legislative intent.
    Case LawsIncome Tax
    Show AI Summary
    DIN compliance: omission of Document Identification Number can render tax orders procedurally noncompliant under CBDT Circular.
    The dispute focuses on whether omission of the Document Identification Number (DIN) from a substantive tax order, despite issuance of an intimation letter containing the DIN, renders the communication noncompliant with CBDT Circular No.19/2019; the Tribunal treated a DIN-less order as deficient, rejected the revenue's rectification attempts and allowed relief to the assessee, while the High Court found no substantial question of law warranting interference, underscoring strict procedural adherence in tax communications.
    Case LawsPMLA
    Show AI Summary
    Arrest Procedure: strict compliance with statutory grounds required to validate arrests and remand under anti-money-laundering law.
    The validity of arrests and remand hinges on recording and furnishing written reasons for belief in the arrested person's involvement and transparent communication of grounds; remand courts must apply independent mind and cannot cure constitutional infirmities arising from defective arrests, and investigative conduct suggesting arbitrariness or abuse of process undermines lawful custody.
    Case LawsGST
    Show AI Summary
    Intent to evade tax determines whether e way bill cancellations warrant seizure measures or minor breach penalties under GST.
    Applicability of detention and seizure provisions under the GST regime turns on the presence of intent to evade tax; where such intent is absent, the statutory scheme contemplates treatment as a minor breach subject to lighter penal consequences. Authorities must assess whether e way bill irregularities reflect inadvertent or excusable circumstances warranting penalties for non compliance rather than initiation of measures reserved for deliberate tax evasion.
    Case LawsCustoms
    Show AI Summary
    Customs valuation integrity requires voluntary, corroborated evidence before enhancing declared import value or imposing penalties.
    Enhancement of import value and penalties for alleged under invoicing were unsupported where export declarations were unattested photocopies later rectified by the supplier, key statements under Section 108 were retracted and lacked corroboration, and contemporaneous import comparisons were dismissed without contrary evidence; therefore, voluntariness and corroborative evidence are required before altering declared value or imposing penalties.
    Case LawsIBC
    Show AI Summary
    Financial Creditor Status: Home buyers must receive equal treatment in IBC resolution plans irrespective of RERA remedies.
    The Court held that the statutory explanation deeming amounts raised from allottees as having the commercial effect of borrowing brings home buyers within the class of financial creditors under Section 5(8)(f) of the IBC; it disapproved any subdivision treating buyers who pursued RERA remedies as a separate subclass, finding such differential treatment to be inequitable and violative of Article 14, and directed equal treatment of allottees in resolution plan consideration.
    Case LawsIncome Tax
    Show AI Summary
    Renovation and consultancy expenses for hotels treated as revenue when they preserve existing assets without creating enduring capital benefits.
    Classification of renovation and related consultancy expenses turns on whether works create a new asset or an enduring capital advantage. Expenditure that preserves existing condition, maintains competitiveness, or restores assets without materially improving life or efficiency is revenue in nature. Consultancy fees aligned with such maintenance are treated as revenue expenditure rather than capital outlay.
    Case LawsCentral Excise
    Show AI Summary
    Form 26AS reliance insufficient where no proper investigation; valuation rules and natural justice must govern service tax demands.
    Reliance on Form-26AS alone cannot sustain a service tax demand absent proper investigation and procedural consultation; valuation must follow the applicable valuation rules for works contract services with consideration of claimed abatements and any notification based relief, and invocation of the extended period of limitation requires factual basis beyond third party data or ex parte adjudication.
    Case LawsSEBI
    Show AI Summary
    Shareholder access to investigation documents upheld, reinforcing transparency and minority investor rights in regulatory proceedings.
    Minority shareholders challenged alleged securities-law violations and sought access to investigation and settlement-related documents; the court found that shareholders could not be treated as outsiders and were entitled to the requested materials despite confidentiality claims, while not definitively ruling on the legality of the settlement process, stressing transparency in corporate governance and implications for application of confidentiality provisions in regulatory proceedings.
    Case LawsPMLA
    Show AI Summary
    Right to speedy trial can justify bail when prolonged trial delay exists and courts must reassess bail applications.
    The matter focuses on bail principles and statutory interpretation under the Prevention of Money Laundering Act, questioning whether proceeds arising from an administrative excise policy constitute proceeds of crime and whether money laundering prosecution requires independent evidence distinct from a scheduled offence. Defence objections include prolonged custody, voluminous evidence, and constitutional protections for ministerial decision making. The court emphasized that bail assessments are tentative, must account for the accused's right to a speedy trial where delay is not attributable to them, and allowed liberty to re apply for bail or interim relief if trial delay or medical emergency arises, to be considered on merits.

    TMI Notes

    Back

    All TMI Notes

    Showing Results for :
    Reset Filters
      No Records Found

      TMI Notes

      Back

      All TMI Notes

      whatsappJoin Channel
      Showing Results for : Reset Filters

      Comparison of Section 41 "Written down value of depreciable asset" between the Income-Tax Act, 2025 (as passed) and the Income-Tax Bill, 2025 (as originally introduced)

      26 August, 2025

      Contents
      Acts
      Rules & Regulations
      Summary
      Note

      Note

      -

      Bookmark

      Print

      Print

      Section 41 Written down value of depreciable asset.

      Income-tax Act, 2025

      At a Glance

      Document: Clause 41 of the Income Tax Bill, 2025 (Old Version), titled "Written down value of depreciable asset." It sets out how written down value (WDV) is to be computed for assets acquired in and before the tax year and for blocks of assets, and addresses special transfers (holding/subsidiary, amalgamation, demerger, conversion to LLP, corporatisation) and consequences of revaluation and agricultural income. It matters to taxpayers, transferor/transferee companies, LLPs, demerged/resulting companies, and tax administrators. Effective date or decision date: Not stated in the document.

      Background & Scope

      Statutory hook: Clause 41 (Bill) concerns computation of WDV for purposes of computing income under the head "Profits and gains of business or profession". The clause supplies a Table of circumstances and the corresponding WDV treatment. Definitions and explanations included in the clause: "Actual cost", "written down value", the block computation formula [(A-D)+B-C]-E with constituent parameters A, B, C, D, E defined in the note; special provisions for intra-group transfers, amalgamation, demerger, conversion to LLP, corporatisation, carried-forward depreciation (section 33(11)), revaluation adjustments where assessee was not required to compute total income for earlier years, treatment where income is partly agricultural, and reference to meaning of "sold" as in section 38(6)(a).

      Statutory Provision Mode

      Text & Scope

      Coverage: Clause 41 prescribes the method of computing WDV for three primary circumstances: (1) asset acquired in the tax year - WDV equals actual cost to the assessee; (2) asset acquired before the tax year - WDV equals actual cost less depreciation actually allowed; (3) block of assets - WDV computed by the formula [(A-D)+B-C]-E, with defined parameters.

      The clause extends the WDV concept to specified transfers: holding/subsidiary transfers (section 70(1)(c)/(d)), amalgamation to an Indian company, demerger (demerged to resulting company), conversion of private/unlisted public company to LLP (section 70(1)(ze)), corporatisation of recognised stock exchange (SEBI-approved), and succession in business u/s 313. It also deems depreciation carried forward u/s 33(11) to be "depreciation actually allowed". It addresses adjustments when assessee was not required to compute total income in earlier years (revaluation and book depreciation are accounted for), and a rule where income is partly agricultural: compute depreciation as if entire income arose from business and deem that depreciation to be 'actually allowed'.

      Interpretation

      Legislative intent and interpretive principles indicated: The clause aims to provide clear, rule-based computation methods for WDV to ensure uniformity across ordinary acquisitions, block computations and corporate restructurings. By providing explicit formulas and mapping treatments for transfers (holding/subsidiary, amalgamation, demerger, LLP conversion, corporatisation), the provision intends to preserve continuity of WDV in specified corporate events and to prevent artificial creation or erosion of depreciation pools. The deeming of carried-forward depreciation as "actually allowed" indicates a policy to give effect to prior accounting of depreciation even if tax was not computed earlier. The agricultural/business rule indicates intent to treat assets used partly for agriculture consistently for WDV computation by treating the asset as if wholly used in business for this purpose.

      Exceptions/Provisos

      Carve-outs and conditions spelled out in the clause: the block formula's parameters impose caps - C shall not exceed (A-D)+B; E shall not exceed [(A-D)+B-C]. Transfers to transferee companies or LLPs are conditional on satisfaction of the relevant subsections of section 70 (e.g., section 70(1)(c)/(d)/(ze)). The clause does not provide further procedural conditions or forms; it assumes satisfaction of statutory conditions in those sections. Any additional provisos or interpretive exceptions: Not stated in the document.

      Illustrations

      • Example 1 (asset acquired in tax year): Company purchases a machine for actual cost 1,00,000 in the tax year. WDV for that tax year = 1,00,000 (actual cost to the assessee).

      • Example 2 (asset acquired before tax year): Assessee acquired equipment earlier for 2,00,000 and depreciation actually allowed to date totals 50,000. WDV = 2,00,000 - 50,000 = 1,50,000.

      • Example 3 (block of assets): Beginning WDV (A) = 5,00,000; depreciation actually allowed in preceding year (D) = 50,000; assets added during year (B) = 1,00,000; assets sold with scrap (C) = 20,000 (not exceeding (A-D)+B); slump-sale reduction (E) computed as per note and capped at [(A-D)+B-C]. Resulting WDV = [(5,00,000 - 50,000) + 1,00,000 - 20,000] - E = [5,30,000] - E (compute E as provided).

      Interplay

      Interaction with other provisions: Clause 41 explicitly references section 70 (transfer conditions for holding/subsidiary, LLC conversion), section 33(11) (carried-forward depreciation), section 38(6)(a) (definition of "sold"), and section 313 (succession in business). No other Rules/Notifications/Circulars are mentioned in the clause. How the clause should be applied in conjunction with section 39 (cost of acquisition) is not directly discussed in this Bill text other than the statement that WDV in transferee is the same as in transferor at the beginning of the tax year; any express "irrespective of section 39" qualification is Not stated in the document.

      Differences between Section 41 of the Income-tax Act, 2025 and Clause 41 of the Income Tax Bill, 2025 (Old Version)

      • Structural and numbering differences:

      Act: The Act text places the computation of written down value (WDV) rules in a single numbered subsection with multiple subparts; the Bill presents the same material in a tabular format (column C) and numbered paragraphs.

      Practical impact: Largely stylistic; potential differences only in interpretive emphasis (table vs prose) but no substantive change evident in most parallel provisions.

      • Definition and treatment of "E" in the block formula (slump sale):

        Bill (Old Version): E is "the actual cost of the asset falling within that block as reduced by depreciation allowable from the tax year 1988-1989 onwards, as if the asset was the only asset in the relevant block of assets, which shall not exceed [(A-D)+B-C]."

        Act: E is the actual cost reduced by (i) depreciation actually allowed in respect of tax year commencing on 1st April, 1986 or any earlier tax year; and (ii) depreciation allowable for tax year commencing on or after 1st April, 1987 under this Act or under the Income-tax Act, 1961, as if such asset was the only asset in the relevant block.

        Practical impact: The Act's formulation separates depreciation already actually allowed before 1 April 1986 and depreciation allowable from 1 April 1987 onwards, whereas the Bill references depreciation allowable from 1988-89 onwards. This difference affects which historical years' depreciation are accounted for in reducing the slump-sale asset cost (E). Tax computation for slump sales could change depending on which vintage of depreciation is brought into account; taxpayers and practitioners must reconcile which years are eligible under each text.

      • Transfers between holding and subsidiary companies and treatment of actual cost / WDV:

        Bill: For transfers (holding to subsidiary and vice versa, where section 70(1)(c)/(d) satisfied) and amalgamation to Indian company, the WDV in the hands of transferee is the same as WDV in hands of transferor "at the beginning of the tax year in which such transfer took place."

        Act: Provides that the actual cost of the block in the hands of transferee shall be the same as the WDV of the block in the hands of transferor in the immediately preceding tax year as reduced by depreciation actually allowed in respect of that block in that tax year; and adds "irrespective of anything contained in section 39".

        Practical impact: The Act explicitly addresses "actual cost" treatment and reduction by depreciation actually allowed in the immediately preceding year and adds an "irrespective of section 39" clause; the Bill focuses on equality of WDV at the beginning of the tax year. The Act's language is more prescriptive about computation and interacts with section 39; the Bill's phrasing may be read as simpler but potentially ambiguous about timing (beginning of tax year vs immediately preceding tax year). This can lead to different WDV bases for transferee taxpayers and affect depreciation computations post-transfer.

      • Placement of the provision deeming carried-forward depreciation to be "actually allowed":

        Bill: This appears as subsection (2) - "Any allowance in respect of any depreciation carried forward u/s 33(11) shall be deemed to be the depreciation actually allowed."

        Act: The same rule appears as subsection (8).

        Practical impact: Substance is the same; difference is only numbering and placement. No material impact.

      • Consequential numbering and ordering of other ancillary provisions (revaluation adjustments, agriculture/business split, demerger rules, corporatisation, LLP conversion):

        Both texts contain these topics but with minor ordering and phrasing differences (e.g., Bill places the revaluation/depreciation adjustments as subsection (3); Act uses (9) and (10) for related matters).

        Practical impact: No substantive divergence apparent except where the Act includes explicit cross-reference language ("irrespective of anything contained in section 39") and the slump-sale depreciation-year specification noted above.

      • Definition of "sold": Both texts refer to section 38(6)(a) for the meaning of "sold", but Bill places it as sub-section (5) and Act as sub-section (11).

        Practical impact: No substantive change.

      Practical Implications

      • Compliance and risk areas: Taxpayers must maintain clear records of actual cost, depreciation actually allowed, and book revaluation adjustments when earlier years did not require income computation. Corporate restructurings (holding/subsidiary transfers, amalgamations, demergers, conversions to LLP, corporatisation) require precise mapping of WDV at the specified point in time (beginning of tax year or immediately before demerger/transfer as the clause prescribes).
      • Record-keeping/evidence: Retain originals and schedules showing actual cost, year-wise depreciation allowed, details of assets added and disposed within blocks (including scrap values and moneys payable), and computations of E for slump sales. Maintain records demonstrating satisfaction of conditions of section 70(1)(c)/(d)/(ze) where relevant. Keep evidence of revaluation adjustments and book depreciation where earlier tax computations were not required.

      Key Takeaways

      • Clause 41 prescribes WDV computation for assets acquired in the year, before the year, and for blocks via a clear formula [(A-D)+B-C]-E.
      • Special transfer events (holding/subsidiary transfers, amalgamation, demerger, LLP conversion, corporatisation) carryforward or replicate WDV between transferor and transferee subject to conditions referenced in other sections.
      • Carried-forward depreciation u/s 33(11) is deemed to be depreciation actually allowed for WDV purposes.
      • Where earlier years did not require income computation, revaluation and book depreciation adjustments are specifically addressed.
      • For assets used partly for agriculture, depreciation for WDV is to be computed as if the entire income were from business; that amount is deemed to be depreciation actually allowed.
      • The clause cross-references section 38(6)(a), section 70, section 33(11), and section 313; interplay with section 39 and certain historical-year depreciation treatments are not specified in detail in this document.

      Full Text:

      Section 41 Written down value of depreciable asset.

      Topics

      ActsIncome Tax