House Rent Allowance exemption under section 10(13A) requires choosing the minimum of three salary-based tests to determine taxable HRA.
The exemption under section 10(13A) and Rule 2A is the minimum of actual HRA received, rent paid in excess of ten percent of salary, and the prescribed percentage of salary. In the example actual HRA is 36,000; excess rent over ten percent of salary is 26,400; forty percent of salary is 38,400. The exempt amount is therefore 26,400 and the remaining 9,600 is included in gross salary.

Voluntary retirement compensation tax treatment: exemption limited by statutory ceiling formulas; excess is treated as taxable salary.
Computation of taxability of voluntary retirement compensation is governed by a statutory exemption limited by prescribed ceiling formulas and the principle that the exempt amount is the lesser of specified sums. In the example, compensation received of 700,000 gives an exempt amount of 500,000 under the statutory ceiling, leaving 200,000 as taxable salary under the governing exemption provision and associated rules.

Retrenchment compensation exemption under Sec. 10(10B): apply least-of-three test for calculating taxable retrenchment; excess taxable.
Computation of retrenchment compensation exemption under Sec. 10(10B): compute the three comparator sums using the employee's service length and salary components, take the least of those sums as exempt. In the example the exempt amount is Rs. 4,32,692 and the remaining Rs. 5,67,308 of the retrenchment payment is taxable.

Leave salary exemption under section 10(10AA) limited by average salary and statutory caps, yielding the lowest applicable ceiling.
Computation of leave salary exemption under section 10(10AA) requires determining average salary by annualising ten months' basic pay plus the proportion of dearness allowance included for retirement benefits and dividing by ten. Unavailed leave months equal total entitlement minus leaves taken and leaves earlier encashed. The exempt leave salary is the least of (unavailed months x average salary), (ten months' average salary), and the statutory ceilings; the example selects the lowest applicable ceiling as exempt.

Commuted pension tax treatment: part exempt, part taxable; exemption reduced where gratuity is received.
Uncommuted pension is fully taxable as salary; commuted pension is partly exempt and partly taxable. Compute a notional full pension value from the commuted payment and apply an exemption fraction: if no gratuity is received, one half of the notional full pension value is exempt; if gratuity is received, one third is exempt. The remainder of the commuted payment is chargeable to tax as salary and must be added to taxable uncommuted pension to determine total taxable pension income.

Gratuity exemption: least of three test determines exempt portion for noncovered employers; excess gratuity is taxable.
Gratuity from a noncovered employer is exempt to the extent of the least of three amounts: the service based fraction computed from the average monthly salary (which includes basic pay, one month's dearness allowance, and average monthly commission), the statutory monetary ceiling, and the gratuity actually received; any excess over that exempt amount is taxable.

Gratuity exemption: part determined by 15 days salary times completed years, excess treated as taxable salary.
Gratuity exemption is determined by taking the least of: the product of 15 days' salary and completed years of service, the statutory ceiling, and the gratuity received. Completed years may be rounded to include qualifying months. The exempt portion is that least amount; any excess over the exempt amount is taxable as salary income in the assessment year.

Gratuity exemption under Section 10(10)(i) remains available even if retiree accepts private sector employment after retirement.
Gratuity paid to a government employee on retirement is fully exempt from income tax under the governing gratuity exemption provision, and that exemption remains available even if the retiree subsequently accepts employment in the private sector.

Prospective effect of administrative circulars: "henceforth" signals non-retrospective application, barring past-duty demands.
When the Board uses language such as "henceforth" a circular is to be treated as having prospective effect; consequently, if the Board did not intend retrospective application, the circular cannot support demands for duties predating its issuance.

Refund of application fee: advance ruling applications are not refundable even if the applicant withdraws the application.
There is no statutory or regulatory provision permitting refund of fees paid for advance-ruling applications; fees are retained and not returned on withdrawal, a position noted in the Service Tax Practice Manual and reflected in the Authority for Advance Rulings decision cited.

Advance ruling review barred except when ruling procured by fraud or misrepresentation, enabling annulment under law.
The Authority for Advance Rulings lacks jurisdiction to reconsider or review its own ruling absent a substantiated mistake of law or fact or a mistake apparent from the record warranting rectification or amendment under the procedural regulations; however, a previously announced ruling may be declared void ab initio if it is shown to have been obtained by fraud or misrepresentation of facts.

Advance ruling jurisdiction excludes Board circulars; notifications by the government are distinct and control admissibility.
Advance ruling jurisdiction does not extend to Board circulars because the statute expressly contemplates government notifications for advance-ruling purposes while omitting circulars; the power to issue circulars is conferred on the Board under the Central Excise framework made applicable to service tax, whereas notification-making power in the service-tax provisions is vested in the Central Government, producing a statutory limitation on advance-ruling admissibility.

Government company eligibility for advance ruling confirmed; subsidiaries retain separate legal personality and may also apply.
A government company is eligible to apply for an advance ruling and a subsidiary of a government company may also file because the holding company and each subsidiary are separate legal entities with independent rights to apply; a step-down subsidiary falls within the definition of an applicant, rendering its advance-ruling application maintainable.

Writ remedy against advance rulings where no statutory appeal exists; seek High Court review under constitutional writ jurisdiction.
No statutory appeal exists against orders of the Advance Ruling Authority; the available remedial route is a writ petition invoking constitutional writ jurisdiction in the appropriate High Court. The Supreme Court has indicated parties should approach the High Court rather than seek direct original jurisdiction at the apex court, and courts are urged to allocate and expedite fiscal writ matters.

Appeal on new grounds barred where party lacks aggrievement; omitted issues may be raised later upon arising.
An appellant cannot maintain an appeal on entirely new grounds if the assessing or appellate authority has approved the assessee's classification or fully allowed the revenue's prayer, because there is no aggrievement; however, issues not considered by the tribunal may be agitated later when a cause of action arises.

Locus standi limits: only aggrieved private parties may challenge tax notices; third-party appeals are not maintainable.
Only the private operators against whom tax notices are issued possess the requisite standing to challenge those notices; third parties lack authority to prosecute appeals or writs on their behalf, and challenges must be instituted by the directly aggrieved parties through the statutory remedy, who may then raise all issues available to them in accordance with law.

Finality of tribunal orders bars fresh appeals, preventing restoration by filing a new appeal against the same order.
When an appeal has been rejected by the Tribunal there is no scope for entertaining an application for restoration by filing a fresh appeal in respect of the same order; similarly, once a Tribunal order has become final for lack of further appeal, the finality of orders precludes fresh appeals challenging that same order.

Finality of proceedings: tax assessments cannot be reopened due to another taxpayer's favourable decision without recall in the same case.
Reopening tax assessment proceedings based on a favourable decision in another assessee's case is ordinarily not permitted; a final order in an assessee's own case remains effective until it is specifically recalled or set aside in that same proceeding.

Finality of unappealed decisions: unchallenged jurisdictional rulings bind the parties until lawfully reversed.
A jurisdictional court's unappealed ruling, even if incorrect, becomes final and binding between the parties and remains so until reversed by a higher forum or other statutory remedy; thus unchallenged classificatory or determinative decisions must be obeyed in subsequent proceedings unless lawfully set aside.

Finality of administrative orders follows when no appeal is filed, and remand directions limit reconsideration scope.
An administrative order attains finality where an entitled party does not file an appeal against a Tribunal disposition; remand orders limit reconsideration to the specific issues directed by the Tribunal, and parties who do not contest merits before the Tribunal forfeit the ability to re argue those merits, so that authorities acting on remand cannot expand review beyond the remand directions.