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
    NewsBill
    Amendment in the definition of the specified fund
    NewsBill
    Amendment in the provision relating to merger of non-profit organisations (NPOs)
    NewsBill
    Amendment in the provisions relating to the violations by a registered NPO
    NewsBill
    Amendment of section 332(1)(f) of the Income-tax Act, 2025 to remove certain funds from the requirem...
    NewsBill
    Amendment in section 349 of the Income-tax Act, 2025 to provide for filing of belated return by NPO
    NewsBill
    Non-allowability of Interest as a deduction against Dividend Income
    NewsBill
    Rationalisation of Schedule XI relating to Provident Funds
    NewsBill
    Exemption for Sovereign Gold Bond
    NewsBill
    Increase in tax rates of Securities Transaction Tax
    NewsBill
    Taxation of buyback of shares
    NewsBill
    No tax to de deducted at source in respect of interest income credited or paid to any co-operative s...
    NewsBill
    AMENDMENT TO THE CUSTOMS ACT, 1962
    NewsBill
    AMENDMENTS TO THE CUSTOMS TARIFF ACT, 1975
    NewsBill
    AMENDMENT TO RULES UNDER CUSTOMS ACT, 1962
    NewsBill
    OTHER PROPOSALS INVOLVING CHANGES IN BASIC CUSTOMS DUTY RATES IN NOTIFICATIONS
    NewsBill
    OTHER CHANGES PROPOSED IN THE CUSTOM NOTIFICATIONS
    NewsBill
    REVIEW OF CUSTOMS DUTY EXEMPTIONS
    NewsBill
    Review of exemptions prescribed by other notifications.
    NewsBill
    SOCIAL WELFARE SURCHARGE (SWS)
    NewsBill
    AGRICULTURE INFRASTRUCTURE AND DEVELOPMENT CESS (AIDC)
❯❯
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
    NewsBill
    Show AI Summary
    Specified fund definition aligned with income tax provision, effective April 1, 2026 for tax year 2026 27 onward.
    Amendment aligns the definition of specified fund in Note 1(g) to Schedule VI with the income tax provision definition, so that existing Sl. Nos. 1-4 of Schedule VI apply to any entity that meets the aligned specified fund definition; the amendment takes effect from 1 April 2026 and applies to the tax year 2026-27 and thereafter.
    NewsBill
    Show AI Summary
    Merger of non-profit organisations exempt from accreted-income tax if same or similar objects and prescribed conditions are met.
    A new provision exempts registered non-profit organisations from accreted-income tax on merger when the transferee and transferor are registered non-profit organisations with the same or similar objects and the merger meets prescribed conditions; the merger-liability rule is amended to make tax payable where the merging entity is non-registered, where a registered non-profit's merger fails to satisfy prescribed conditions despite similar objects, or where objects are not the same or similar.
    NewsBill
    Show AI Summary
    Registered non-profit organisations: commercial activity for public utility no longer treated as a specified violation risking registration cancellation.
    The amendment removes commercial activities by registered non-profit organisations carried out for advancement of General Public Utility from the category of specified violation in section 351, preventing such activity from triggering registration cancellation, and aligns the treatment with other violation provisions; effective 1 April 2026 for tax year 2026-27 and thereafter.
    NewsBill
    Show AI Summary
    Registration requirement removed for certain Schedule VII funds to align exemption rules under the Income-tax regime.
    Amendment excludes persons listed in Schedule VII (Table Sl. No. 10-16) from section 332(1)(f) of the Income-tax Act, 2025, removing their obligation to register under section 332 to claim income-tax exemption and aligning registration requirements with the Income-tax Act, 1961; effective 1 April 2026 for tax year 2026-27 onwards.
    NewsBill
    Show AI Summary
    Belated filing by registered non-profit organisations is permitted under amended section 349 referencing belated-filing provision.
    The amendment enables registered non-profit organisations to file belated income-tax returns by adding a cross-reference to the belated-filing provision within the statutory rule governing return filing by such organisations, restoring the belated-filing ability previously available and applying from 1 April 2026 to the 2026-27 tax year and thereafter.
    NewsBill
    Show AI Summary
    Dividend income: interest deductions disallowed for earning dividend or mutual fund unit income from April 1, 2026.
    The Finance Bill amends the law to disallow any deduction for interest expenditure incurred in earning dividend income or income from units of mutual funds, removing the earlier deduction that had been permitted up to a twenty per cent ceiling of gross dividend or mutual fund income; the change applies prospectively from the Bill's implementation date and affects income taxed under Income from other sources.
    NewsBill
    Show AI Summary
    Provident fund tax rules are realigned to the EPF framework, removing legacy contribution limits and investment cap.
    Align recognised provident fund tax provisions with the EPF framework by omitting parity and percentage-based restrictions that duplicate the Rs.7.5 lakh unified employer contribution cap, restrict recognition to funds exempt under section 17 of the EPF Act, remove the fifty per cent statutory limit on Government securities investment, and retain regulatory oversight via subordinate EPF instruments; effective 1 April 2026 for tax year 2026-27 onward.
    NewsBill
    Show AI Summary
    Sovereign Gold Bond exemption limited to original subscribers who hold until maturity, effective for tax year 2026-27 onward.
    The capital gains exemption for Sovereign Gold Bonds is confined to bonds subscribed at original issue and held continuously until redemption on maturity, to ensure uniform application across all Reserve Bank of India issuances.
    NewsBill
    Show AI Summary
    Securities Transaction Tax rates for options and futures increased; revised rates apply to transactions on or after April 1, 2026.
    A calibrated revision raises STT on derivatives: sale of an option in securities from 0.1% to 0.15% of the premium; sale of an exercised option from 0.125% to 0.15% of the intrinsic price; and sale of a future in securities from 0.02% to 0.05% of the traded price. The changes aim to curb disproportionate speculation in futures and options trading, take effect from 1 April 2026, and apply to transactions in options and futures entered into on or after that date.
    NewsBill
    Show AI Summary
    Taxation of share buybacks reclassified as capital gains; higher tax rates apply to promoters and promoter companies.
    Consideration received on buy-back of shares is recharacterised from dividend income to taxable capital gains, with cost of acquisition of extinguished shares remaining separately recognised. Promoters will face an effective tax liability of thirty per cent on buy-back gains (tax at applicable rates plus an additional tax) and promoter companies will face an effective tax liability of twenty-two per cent. These amendments apply from the first day of the relevant financial year and to the tax year 2026-27 and subsequent years.
    NewsBill
    Show AI Summary
    Interest paid to co operative societies carrying on banking exempt from TDS under Finance Bill amendment effective April 1, 2026.
    The Act is amended to align with the Income tax Act, 1961 by providing that deduction of tax at source shall not be made on interest income (other than interest on securities) credited or paid to any co operative society engaged in carrying on the business of banking, including a co operative land mortgage bank; the amendment takes effect from 1 April 2026.
    NewsBill
    Show AI Summary
    Indian-flagged fishing vessels beyond territorial waters get specific customs rules, including duty-free landing and entry procedures.
    Amendments extend Customs Act jurisdiction for fishing activities beyond territorial waters, define Indian-flagged fishing vessel, and insert section 56A to permit duty free importation of fish harvested beyond territorial waters and to treat fish landed at foreign ports as exports while authorising rules on entry, declaration, custody, examination, assessment, clearance, transit and transhipment. Other amendments deem certain penalties a charge for non payment of duty, fix advance rulings' validity at five years with transitional extensions, allow removal of warehoused goods between warehouses without prior officer permission, and enable regulations for custody of imported or export bound goods.
    NewsBill
    Show AI Summary
    Customs tariff amendments adjust basic customs duty rates, create new tariff lines, and reclassify import items effective Feb-May 2026.
    The First Schedule to the Customs Tariff Act, 1975 is amended to change Basic Customs Duty rates and to create new tariff items: immediate BCD increases effective 02.02.2026 (via provisional declaration), targeted BCD decreases effective 01.04.2026, and a comprehensive reclassification and rate migration from exemption notifications into the Tariff Act effective 01.05.2026, preserving applied duty levels while enabling better product identification and monitoring.
    NewsBill
    Show AI Summary
    Baggage rules updated; deferred import duty payments shifted to monthly for eligible importers, creating a new eligibility class.
    The baggage regime is replaced by Baggage Rules, 2026 to clarify temporary carriage of goods, avoid unnecessary detention, and restructure Transfer of Residence benefits by duration of stay, effective 02.02.2026; deferred import duty payment frequency is changed from 15 days to monthly and a new class of eligible importers is created by amending the Deferred Payment of Import Duty Rules, 2016.
    NewsBill
    Show AI Summary
    Basic Customs Duty changes: several commodities moved to nil duty while potassium hydroxide sees a 7.5% levy increase.
    Amendments to Basic Customs Duty effective 2 February 2026 alter duty incidence for specified imports: monazite, sodium antimonate for solar glass, nuclear power generation goods and control/burnable absorber rods, and specified microwave-oven manufacture components are moved to nil duty, while potassium hydroxide is newly subject to a 7.5% basic customs duty; consult the notification for full descriptions.
    NewsBill
    Show AI Summary
    Customs BCD exemptions extended to BESS, aircraft parts, nuclear projects, specified drugs and select critical minerals.
    BCD exemptions are expanded to cover capital goods for Battery Energy Storage Systems and to extend relief for aircraft raw materials and components (including engines) for manufacture or maintenance when imported by defence Public Sector Units, subject to the IGCRS Rules, 2022 and an end use certificate from a Joint Secretary level officer. Exemptions for goods for specified Nuclear Power Projects are broadened irrespective of capacity and extended through 30.09.2035. Lists in the customs notification are updated to add medicines and rare diseases for personal import exemptions, and select critical mineral entries are being consolidated into the tariff with the prior notification to be rescinded.
    NewsBill
    Show AI Summary
    Customs duty exemptions: 102 conditional entries extended, 22 allowed to lapse, and select unconditional exemptions omitted.
    A review of notification No. 45/2025 Customs extends validity of 102 conditional exemption/concessional BCD entries to 31.03.2028, allows 22 conditional entries to lapse on 31.03.2026, and omits specified unconditional exemptions effective 02.02.2026 so applicable BCD rates will apply from the First Schedule. The review also removes or prescribes sunset clauses, modifies certain entries (including mergers, description changes, and extended time limits), and incorporates some rates into the Tariff.
    NewsBill
    Show AI Summary
    Budget changes extend BCD exemptions for listed goods to March 31, 2028 and omit redundant notification entries.
    Extension of certain BCD exemptions to 31.03.2028 is prescribed for specified notifications covering precious stones on approval/return basis, goods imported for execution of export orders for jobbing, copper products from reverts, and gold/silver from copper anode slime exported for toll smelting. One standalone exemption for castor oil cake manufactured in SEZs and brought to DTA lapses on 31.03.2026, and a notification exempting works of art and antiques for public exhibition is given a sunset date of 31.03.2028. Selected exemption entries in notification No. 36/2024-Customs are omitted effective 02.02.2026 as redundant, with BCD rates to operate via the First Schedule of the Customs Tariff Act, 1975.
    NewsBill
    Show AI Summary
    Social Welfare Surcharge changes extend specific customs exemptions, add SWS on personal-use imports, and exempt electronic toys.
    Amendments to notification No. 11/2018-Customs consolidate and preserve SWS exemptions for specified graphite, quartz, silicon dioxide and related items; reassign concessional BCD for sub heading 2106 90 to the First Schedule while retaining SWS incidence; modify the spent catalyst/ash exemption description to remove a lapsed cross reference without altering exemption; impose SWS on all dutiable personal use imports under heading 9804; and exempt parts and goods under heading 9503 (electronic toys) from SWS.
    NewsBill
    Show AI Summary
    New aircraft rubber pneumatic tyres continue to attract 0.5% agriculture infrastructure and development cess from 02.02.2026.
    New pneumatic tyres of rubber used on aircraft under tariff item 4011 30 00 will continue to attract a 0.5% Agriculture Infrastructure and Development Cess. The notification entry is amended to omit reference to a removed exemption entry with effect from 02.02.2026, without changing the 0.5% AIDC rate for these goods (other than those with nil basic customs duty).

    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

      Presumptive Taxation for Shipping Companies : Clause 226(2)-(6) of the Income Tax Bill, 2025 and Section 115VE of the Income-tax Act, 1961

      10 May, 2025

      Contents
      Acts
      Rules & Regulations
      Summary
      Note

      Note

      -

      Bookmark

      Print

      Print

      Clause 226 Tonnage tax scheme.

      Income Tax Bill, 2025

      Introduction

      The Indian shipping industry, with its capital-intensive nature and global competitiveness, has long required a tax regime that recognizes its unique operational realities. The tonnage tax scheme, first introduced in the Income-tax Act, 1961, was a response to these demands, offering a presumptive taxation mechanism based on the net tonnage of ships rather than conventional income-based computation. This approach aligns Indian law with international practices, providing certainty and simplification for shipping companies.

      Clause 226(2) to (6) of Income Tax Bill, 2025 proposes to retain and update this framework. This commentary undertakes a detailed analysis of these provisions, their objectives, practical implications, and compares them with the existing Section 115VE of the Income-tax Act, 1961. The analysis will highlight both continuity and any significant changes, as well as potential areas of ambiguity or concern.

      Objective and Purpose

      The legislative intent behind both the 1961 Act's Section 115VE and the 2025 Bill's Clause 226 is to provide a stable, predictable, and internationally competitive tax regime for Indian shipping companies. The tonnage tax scheme recognizes the cyclical and volatile nature of shipping revenues and the practical difficulties in tracking global shipping income. By taxing companies on the basis of the tonnage of their operated ships, the legislation seeks to:

      • Offer administrative simplicity and certainty in tax liability,
      • Ensure competitiveness with shipping hubs worldwide, and
      • Encourage the growth and modernization of Indian shipping fleets.

      The provisions also aim to prevent tax arbitrage and ensure that only genuine shipping operations benefit from the scheme, by carefully defining qualifying ships, eligible companies, and the process for opting into the scheme.

      Detailed Analysis of Clause 226(2) to (6) of Income Tax Bill, 2025

      Clause 226(2): Computation of Profits under the Tonnage Tax Scheme

      Text: "A tonnage tax company engaged in the business of operating qualifying ships shall compute the profits from such business under the tonnage tax scheme."

      This sub-clause mandates that companies qualifying as "tonnage tax companies" must compute their profits from the business of operating qualifying ships exclusively under the tonnage tax scheme. This provision is central to the regime, as it establishes the presumptive basis of taxation.

      The language mirrors Section 115VE(1) of the 1961 Act, which similarly requires computation under the tonnage tax scheme for eligible companies. The focus on "qualifying ships" ensures that only ships meeting specific criteria (as defined elsewhere in the Act) are covered, preserving the integrity of the regime.

      The provision thus excludes the possibility of dual computation (both normal and presumptive) for the same source of income, reinforcing the scheme's exclusivity for eligible income.

      Clause 226(3): Tonnage Tax Business as a Separate Business

      Text: "The tonnage tax business shall be considered as a separate business distinct from all other activities or business carried on by the company."

      This provision is crucial for both compliance and assessment purposes. By treating tonnage tax business as a separate business, the law ensures that income, expenses, and tax computation for shipping operations under the scheme are ring-fenced from other activities of the company.

      Section 115VE(2) of the 1961 Act contains substantially similar language. The rationale is to prevent cross-subsidization or set-off of losses/profits between the tonnage tax business and other business segments (such as logistics, ship management, or non-shipping activities). This preserves the integrity of the presumptive regime and prevents tax base erosion.

      The phrase "distinct from all other activities" is particularly significant, as it mandates separate accounting and reporting, thereby facilitating effective audit and compliance oversight.

      Clause 226(4): Separate Computation of Profits

      Text: "The profits referred to in sub-section (2) shall be computed separately from the profits and gains from any other business."

      This clause reinforces the segregation established in sub-section (3). It requires that profits from the tonnage tax business be computed independently, thereby precluding the aggregation of such profits with those from other businesses for the purposes of tax computation.

      Section 115VE(3) of the 1961 Act is almost identical. The practical effect is that companies must maintain distinct books or records for their tonnage tax business, and tax authorities must assess such income separately. This ensures transparency and prevents potential manipulation of profits between business segments.

      The provision also implies that tax incentives, deductions, or exemptions available to other businesses under the Act may not be claimed in respect of the tonnage tax income, and vice versa.

      Clause 226(5): Option Requirement for Applicability

      Text: "The tonnage tax scheme shall apply only if an option to that effect is made as per section 231."

      This provision establishes the elective nature of the tonnage tax scheme. Companies are not automatically covered; they must make an explicit option, following the process detailed in section 231 of the Bill (which presumably specifies the manner, timing, and conditions for opting in).

      Section 115VE(4) of the 1961 Act similarly ties the applicability of the scheme to the exercise of an option u/s 115VP. This approach gives companies flexibility, allowing them to evaluate the relative benefits of the tonnage tax scheme versus normal provisions based on their business models and profitability.

      However, once the option is exercised, companies are typically bound to the scheme for a minimum period (as specified elsewhere), to prevent opportunistic switching between regimes.

      This clause is significant as it preserves the voluntary nature of the scheme, balancing revenue considerations with industry needs.

      Clause 226(6): Computation under Normal Provisions for Non-Opting Companies

      Text: "Where a company engaged in the business of operating qualifying ships,-- (a) is not covered under the tonnage tax scheme; or (b) has not made an option in respect of the tonnage tax scheme as per section 231, the profits and gains of such company from such business shall be computed as per other provisions of this Act."

      This clause provides the corollary to sub-section (5). If a company does not, or cannot, opt for the tonnage tax scheme, its profits from the business of operating qualifying ships will be computed under the standard provisions of the Act (i.e., normal business income computation, with all attendant deductions, allowances, and adjustments).

      Section 115VE(5) of the 1961 Act contains similar language. This ensures that the tonnage tax scheme is an alternative, not a mandatory, regime. The provision also addresses cases where a company may become ineligible for the scheme due to non-compliance or violation of conditions.

      From a policy perspective, this clause is important as it maintains a level playing field for companies that do not, or cannot, avail the tonnage tax scheme, ensuring that all shipping income is subject to tax, albeit under different regimes.

      Practical Implications

      For Shipping Companies

      • The provisions provide clarity and certainty for shipping companies regarding the computation and taxability of their income. By allowing companies to opt into a presumptive regime, they can better forecast tax liabilities, simplify compliance, and potentially reduce litigation arising from complex income attribution across international waters.
      • The requirement for separate accounting and the ring-fencing of tonnage tax business ensures that companies must maintain robust internal controls and documentation. Failure to do so could result in disallowance of the scheme or adverse tax consequences.

      For Tax Authorities

      • The clear demarcation between tonnage tax business and other activities facilitates assessment and audit. The elective nature of the scheme, combined with the requirement for a formal option, reduces the scope for disputes regarding eligibility.
      • However, tax authorities must remain vigilant against attempts to artificially shift income or expenses between business segments, and ensure that only genuine shipping income is taxed under the presumptive regime.

      For Policy and Revenue Considerations

      • The scheme reflects a balance between revenue interests and the need to support a strategic industry. By making the scheme elective and subject to conditions, the legislation seeks to minimize revenue loss while promoting industry competitiveness.
      • The provisions also align Indian law with international shipping tax regimes, reducing the risk of base erosion or profit shifting to more favorable jurisdictions.

      Comparative Analysis: Clause 226(2) to (6) vs. Section 115VE

      Structural and Substantive Similarities

      A close reading reveals that Clause 226(2)-(6) of the 2025 Bill is substantively similar to Section 115VE of the 1961 Act. Both provisions:

      • Mandate computation of profits from qualifying ships under the tonnage tax scheme for eligible companies,
      • Require the tonnage tax business to be treated as a separate business,
      • Stipulate separate computation of profits from other business segments,
      • Make the scheme elective, contingent on a formal option, and
      • Provide for computation under normal provisions for non-opting companies.

      The language and sequence of provisions are nearly identical, indicating legislative intent to carry forward the established regime with minimal change.

      Notable Differences and Updates

      While the core framework remains the same, there are some differences worth noting:

      • Cross-References: The 2025 Bill refers to section 231 (for the option), whereas the 1961 Act refers to section 115VP. This is a structural change, reflecting the reorganization and renumbering of provisions in the new Bill.
      • Terminology: The Bill uses phrases such as "tonnage tax company" and "qualifying ships," which are consistent with global practice and the 1961 Act, but may be further clarified or updated in definitions elsewhere in the Bill.
      • Potential for Further Clarification: The Bill may introduce additional clarifications in related sections (not covered here), such as the definition of qualifying ships, procedures for opting in, and consequences of non-compliance. These may address ambiguities or issues that have arisen under the 1961 Act.

      Ambiguities and Potential Issues

      Both the 2025 Bill and the 1961 Act leave certain practical questions to be addressed through subordinate rules or administrative guidance:

      • The precise process, timing, and form for exercising the option,
      • The minimum period for which the option must be exercised,
      • Procedures for exit or disqualification from the scheme, and
      • Mechanisms for ensuring compliance with the requirement for separate business treatment.

      These issues are typically addressed in rules or notifications, but clarity in the primary legislation is always desirable to reduce litigation.

      Policy Continuity and International Alignment

      The retention of the tonnage tax scheme in the 2025 Bill, with provisions closely tracking the 1961 Act, signals policy continuity and ongoing commitment to supporting the shipping sector. It also ensures that India remains aligned with international best practices, as tonnage tax regimes are prevalent in major maritime nations.

      Conclusion

      Clause 226(2) to (6) of Income Tax Bill, 2025 represents a faithful and considered continuation of the tonnage tax regime established under Section 115VE of the Income-tax Act, 1961. The provisions maintain the elective, ring-fenced, and presumptive nature of the scheme, providing clarity and administrative simplicity for both taxpayers and tax authorities.

      While the Bill does not introduce radical changes, its structural updates and potential for further clarification in related sections may address operational issues that have arisen in the implementation of the 1961 Act. As shipping remains a strategic sector, the continued availability of the tonnage tax scheme is likely to be welcomed by industry stakeholders.

      Future reforms may focus on refining definitions, streamlining opt-in/opt-out procedures, and ensuring robust compliance mechanisms to balance revenue considerations with industry needs.


      Full Text:

      Clause 226 Tonnage tax scheme.

      Topics

      ActsIncome Tax