High Altitude and Siachen Allowance

The High Altitude Allowance and the Siachen Allowance are the two risk and hardship allowances for service at extreme altitude on the Indian frontier. The Siachen Allowance is paid at Rs. 42,500 a month for Level 9 and above and Rs. 30,000 for Level 8 and below, fixed above the Risk and Hardship matrix altogether and the highest hardship rate in the central pay system. The High Altitude Allowance is paid in three categories, Cat-I, Cat-II and Cat-III, each placed in a cell of that matrix. Both took effect on 1 July 2017 under Department of Expenditure Resolution No. 11-1/2016-IC dated 6 July 2017.

The categories are not an altitude ladder, and that is the fact most often got wrong about them. Cat-II covers everything above 15,000 feet and pays Rs. 6,625 and Rs. 5,125 a month. Cat-III covers certain specified areas of especially uncongenial climate and pays Rs. 31,250 and Rs. 21,625, close to five times as much, because it inherited a rate pegged before 2016 at 80% of the Siachen Allowance rather than a rate derived from height. A posting above 15,000 feet can therefore draw considerably less than a posting lower down.

Both allowances reach beyond the armed forces. Paragraph 8.10.27 of the 7th Central Pay Commission report grants High Altitude Allowance to Defence and Central Armed Police Forces personnel, Ministry of Home Affairs OM No. II-27012/40/CF-3396706/2017-PF-I dated 31 July 2017 extends all three categories and the Siachen Allowance to the CAPFs and the Assam Rifles, and paragraph 8.10.80 of the report extends High Altitude Allowance to civilian employees at qualifying locations where no other risk and hardship allowance applies.

This article sets out the three categories and the altitude bands that define them, the matrix cell and rate for each, the Siachen carve-out and the Cabinet decision behind it, the 25% dearness-allowance escalator and how it applies to the Siachen figure, the pre-2016 rank-wise structure the matrix replaced, who draws these allowances, the concurrency position, and the tax treatment under the Income-tax Act, 2025. It is a child of the allowances hub.

Why altitude is compensated

Altitude is a hazard in its own right, independent of any enemy. Above roughly 9,000 feet the thinning air begins to tell on the body, and higher still the effects sharpen into a serious physiological load: less oxygen in every breath, disturbed sleep, loss of appetite and weight, slower healing, and a standing risk of altitude sickness, frostbite and pulmonary or cerebral oedema. Acclimatisation takes weeks. Work that is routine at sea level becomes hard labour.

The pay of the rank does not answer any of this, because a pay level is fixed for the grade and not for the ground the grade is held on. The 7th Central Pay Commission examined 51 risk and hardship allowances in Chapter 8.10 of its report and folded almost all of them into a single matrix, and High Altitude Allowance went in with the rest. Siachen did not, for reasons set out below.

Both allowances are duty allowances. They begin on posting to a qualifying area, run for the tenure, and stop on posting away.

The three categories and their altitude bands

Paragraph 8.10.28 of the 7th Central Pay Commission report defines the three categories, and it is the only place the bands are stated in figures. Cat-I areas “comprise areas between heights of 9000 ft. to 15000 ft. and ‘uncongenial’ areas below 9000 ft.” Cat-II areas “are those areas that are above 15000 ft. in height.” Cat-III areas “comprise certain specified areas that have especially uncongenial climate”, and the same paragraph records that the pre-2016 rate in Cat-III areas was 80% of the Siachen Allowance.

Two things follow from those definitions. Cat-I is not the mildest band by height alone, because it reaches down below 9,000 feet to pick up specified uncongenial areas. And Cat-III is not an altitude band at all: it is a list of named areas selected for climate, which is why it carries a rate an order of magnitude above the other two and why it cannot be worked out from a station’s elevation.

The classification of a particular station is an administrative act, notified by the Ministry of Defence for the Services and by the Ministry of Home Affairs for the Central Armed Police Forces. A unit does not certify its own altitude, and the rate for a specific posting follows the category the station has been placed in.

The matrix cell and rate for each category

Each category was placed in a named cell of the Risk and Hardship matrix by the 7th Central Pay Commission, at paragraphs 8.10.68, 8.10.74 and 8.10.75 of its report. Appendix A of Ministry of Defence letter No. 1(16)/2017/D(Pay/Services) dated 18 September 2017 carries the same three placements at items 11, 10 and 9, and the rate table at paragraph 2 of Ministry of Home Affairs OM No. II-27012/40/CF-3396706/2017-PF-I dated 31 July 2017 carries them at serial numbers 2(b), 5 and 6.

Cat-III shares cell R1H1 with the Flying Allowance, the Special Forces Allowance, the Submarine Allowance and the CoBRA and MARCOS commando allowances, which is the company the rate places it in. Cat-II shares R3H1 with Tough Location Allowance I and the Boiler Watch Keeping Allowance. Cat-I shares R3H2 with Tough Location Allowance II, the Project Allowance and the Compensatory (Construction or Survey) Allowance.

Item 78 of Appendix II to Resolution No. 11-1/2016-IC dated 6 July 2017 records the Government decision on High Altitude Allowance as “Accepted”, against a recommendation of “Retained. Rationalized.” The Commission’s three-cell placement therefore went through without modification, which is what distinguishes it from Siachen.

The Siachen Allowance and its carve-out above the matrix

The Siachen Allowance is Rs. 42,500 a month for Level 9 and above and Rs. 30,000 for Level 8 and below, and it is the only allowance in the system paid above the ceiling of the Risk and Hardship matrix. Paragraph 8.10.67 of the 7th Central Pay Commission report had put Siachen duty in RH-Max, the top cell, at Rs. 31,500 and Rs. 21,000. The Cabinet went further on 28 June 2017.

The Department of Expenditure press note of that date records the reasoning and the figures: recognising the extreme nature of the risk and hardship faced on a continuous basis in Siachen, the Government decided to raise the allowance from Rs. 14,000 to Rs. 30,000 a month for jawans and junior commissioned officers at Level 8 and below, and from Rs. 21,000 to Rs. 42,500 for officers at Level 9 and above. Item 22 of Appendix I to Resolution No. 11-1/2016-IC dated 6 July 2017, the schedule of 34 modifications the Government made to the Commission’s allowance recommendations, carries the same revision in the same terms.

The enhancement is not a later order. It came out of the same Cabinet decision, the same Resolution and the same effective date of 1 July 2017 as the matrix itself, under paragraph 6 of that Resolution.

That decision broke the Commission’s own ceiling. Paragraphs 8.10.66 and 8.10.67 make RH-Max the ceiling for risk and hardship allowances and state that no such allowance may exceed it. Rs. 42,500 exceeds Rs. 31,500, and the Resolution that adopted the ceiling exceeded it in the same document.

What RH-Max became after the Siachen enhancement

The two implementing ministries handled the broken ceiling differently, and the divergence is on the face of their orders. Appendix C of Ministry of Defence letter No. 1(16)/2017/D(Pay/Services) dated 18 September 2017 prints the matrix as issued to the three Services with RH-Max itself set at Rs. 42,500 for Level 9 and above and Rs. 30,000 for Level 8 and below. The Ministry of Defence did not leave the top cell at the Commission’s figures: it rewrote the cell at the enhanced Siachen rates, so that for the armed forces Siachen Allowance is a cell rate rather than an exception to the grid.

The Ministry of Home Affairs took the other route. Paragraph 1 of its OM of 31 July 2017 reproduces the matrix with RH-Max at the Commission’s Rs. 31,500 and Rs. 21,000, while listing Siachen Allowance separately at Rs. 42,500 and Rs. 30,000 against the RH-Max label.

The practical outcome is identical, because both ministries pay Rs. 42,500 and Rs. 30,000 and both apply the escalator to those figures. The point matters only when reading the two orders side by side: the Commission’s RH-Max and the Ministry of Defence’s RH-Max are different numbers, and a rate table that cites RH-Max without saying whose is ambiguous.

The 25% dearness-allowance escalator

Every rate in this article rises by 25% each time dearness allowance rises by 50 points. The second bullet of paragraph 8.10.66 of the 7th Central Pay Commission report states the rule for the matrix cells. Dearness allowance reached 50% with effect from 1 January 2024 under Department of Expenditure OM No. 1/1/2024-E.II(B), which triggered the one step that has fallen due so far. That is why the Cat-III rate stands at Rs. 31,250 against a base of Rs. 25,000.

The escalator reaches the Siachen Allowance as well, which the sources settle in three places. Paragraph 8.2.4 of the report classifies allowances by their indexation and puts Siachen Allowance expressly in the partially indexed class, naming it alongside Field Area Allowance as an example of an allowance that rises 25% at each 50-point step. Appendix C of the Ministry of Defence letter of 18 September 2017 makes the Siachen rate a matrix cell rate, which attracts paragraph 8.10.66 directly. And paragraph 10 of Ministry of Home Affairs OM No. II-27012/40/CF-3396706/2017-PF-I dated 31 July 2017 states in terms that the rates in the table above it will increase further by 25% each time dearness allowance rises by 50%, that table beginning at serial number 1 with Siachen Allowance at Rs. 42,500 and Rs. 30,000.

Applying the single step that has fallen due gives Rs. 53,125 a month for Level 9 and above and Rs. 37,500 for Level 8 and below with effect from 1 January 2024. No order printing those two figures has been issued, and none is needed: the escalator operates on the strength of the clause, in the same way the matrix cells moved from Rs. 25,000 to Rs. 31,250 without a fresh rate notification.

From rank-wise slabs to two pay-level bands

Before 1 July 2017 the High Altitude Allowance was paid rank by rank, and the 7th Central Pay Commission replaced that structure with two bands. Paragraph 8.10.27 of the report sets out the old rates. Cat-I ran from Rs. 3,180 a month for a Lieutenant Colonel and above down to Rs. 810 for a Sepoy or Naik. Cat-II ran from Rs. 4,800 down to Rs. 1,200. Cat-III paid a flat Rs. 16,800 to all officers and Rs. 11,200 to all junior commissioned officers and other ranks.

Seven slabs became two. The Department of Expenditure press note of 28 June 2017 records the effect as a move from a range of Rs. 810 to Rs. 16,800 a month to a range of Rs. 2,700 to Rs. 25,000, those endpoints being exactly the Cat-I rate for Level 8 and below and the Cat-III rate for Level 9 and above.

The compression cut against senior ranks in the top category and strongly favoured the lower ranks in the lower ones. A Sepoy in Cat-I went from Rs. 810 to Rs. 2,700, more than three times over. An officer in Cat-III went from Rs. 16,800 to Rs. 25,000, under a 50% rise. The same pattern runs through the whole of Chapter 8.10, because the matrix fixes a rate for a duty and a pay band rather than for a rank.

Who draws these allowances

Eligibility runs wider than the armed forces, on three separate authorities.

Paragraph 8.10.27 of the 7th Central Pay Commission report states that High Altitude Allowance “is granted to Defence and CAPF personnel deployed in high altitude areas”. Item iv of the Department of Expenditure press note of 28 June 2017 repeats the point for the revised rates, recording that the rates of High Altitude Allowance granted to the Defence Forces and Central Armed Police Forces personnel will be governed by the Risk and Hardship matrix.

Ministry of Home Affairs OM No. II-27012/40/CF-3396706/2017-PF-I dated 31 July 2017 puts that into effect. It is addressed to the Directors General of the Border Security Force, the Central Industrial Security Force, the Central Reserve Police Force, the Indo-Tibetan Border Police, the Sashastra Seema Bal and the Assam Rifles, and its rate table grants all three High Altitude categories and the Siachen Allowance to their personnel. A CAPF constable at a Cat-I post draws the same Rs. 3,375 a month as a Sepoy.

Civilians come in through paragraph 8.10.80 of the report, which recommended abolishing the Special Compensatory (Hill Area) Allowance on the ground that there is hardly any hardship involved at altitudes of 1,000 metres above sea level, and extending High Altitude Allowance instead to civilian employees at locations where no Tough Location Allowance or other risk and hardship allowance is admissible. The Government accepted it.

The CAPF election between hardship and detachment allowances

A Central Armed Police Forces employee cannot draw the full set of location allowances at once, and paragraph 9 of the Ministry of Home Affairs OM of 31 July 2017 forces a choice. The personnel elect between two packages: a risk and hardship allowance under the matrix together with Ration Money Allowance, or Detachment Allowance together with Special Duty Allowance or Tough Location Allowance. High Altitude Allowance sits in the first package.

Two other conditions in the same OM are worth separating from it, because they are often read across when they do not apply. Paragraph 6 raises from fifteen days to thirty the leave ceiling beyond which Highly Active Field Area, Field Area and Modified Field Area Allowance stop; that ceiling governs the field area allowance family and not High Altitude Allowance. Paragraph 5 treats Border Out Posts as field areas at cell R2H2 and adds a further 25% for air-maintained posts requiring a foot march of five days or more, which is a field-area rule rather than an altitude rule.

Drawing more than one hardship allowance

The matrix neither permits nor bars any particular combination, and the question is settled by instructions that predate it. Paragraph 8.10.78 of the 7th Central Pay Commission report provides that concurrent admissibility of allowances applicable to Defence personnel shall remain unaltered, and that its applicability should be extended mutatis mutandis to Central Armed Police Forces personnel posted in field areas. Paragraph 7 of Ministry of Defence letter No. 1(16)/2017/D(Pay/Services) dated 18 September 2017 says the same thing from the other end, providing that the other terms and conditions for the grant of each allowance continue to apply to the revised rates.

The pre-2016 Ministry of Defence concurrency instructions therefore continue to decide each pair, and they are not uniform. High Altitude Allowance is admissible in addition to Compensatory Field Area Allowance where the conditions of both are met, so a station that is both a field area and at altitude can attract both. Siachen Allowance is admissible in addition to Compensatory Field Area Allowance but not alongside High Altitude Allowance, which is why a glacier posting is compensated through the Siachen rate rather than by stacking an altitude category on top of it.

Paragraph 8.10.66 of the report adds the general limit that no single risk and hardship allowance may exceed RH-Max. The words are “individual RHA”, not the aggregate, so the ceiling binds each allowance separately and not their sum.

A worked illustration

Take a Sepoy at Level 3, posted in turn to each of the three categories and then to the glacier, at the rates in force since 1 January 2024. In a Cat-I area the High Altitude Allowance is Rs. 3,375 a month. Moved above 15,000 feet into Cat-II it becomes Rs. 5,125. Moved to a Cat-III area it becomes Rs. 21,625, a jump of more than four times on the Cat-II figure without any change in the soldier’s rank, basic pay or Military Service Pay. On Siachen the altitude allowance is replaced by Rs. 30,000 as notified, or Rs. 37,500 with the escalator step applied.

An officer at Level 11 in the same four postings draws Rs. 4,250, Rs. 6,625, Rs. 31,250 and Rs. 42,500 as notified. The spread between the officer band and the soldier band is narrow in the low cells, Rs. 875 a month in Cat-I, and wide at the top.

The illustration makes the structural point. Three of these four figures are cell rates from a matrix that grades duties, and the fourth sits outside it. The single largest step in a soldier’s altitude pay is not the step from 15,000 feet upward but the step from Cat-II into Cat-III, a category defined by climate rather than height.

How these allowances sit among the risk and hardship allowances

The order of severity as the pay system marks it runs: Siachen Allowance above the matrix at Rs. 42,500 and Rs. 30,000; RH-Max, which the Ministry of Defence has set at the same figures and the Ministry of Home Affairs at Rs. 31,500 and Rs. 21,000; then cell R1H1 at Rs. 31,250 and Rs. 21,625, holding Cat-III alongside the Flying Allowance and the commando allowances; then the field area allowance family in the middle cells; then Cat-II in R3H1 and Cat-I in R3H2 near the floor.

The Antarctica Allowance is the companion carve-out. Paragraph 8.10.67 placed it in RH-Max alongside Siachen, and the Government removed it too, but in the opposite direction and for the opposite reason: it was left on a per-day basis reflecting the expedition seasons rather than converted to a monthly cell rate. Siachen came out because RH-Max was too low; Antarctica came out because a monthly cell was the wrong shape.

Neither allowance is Military Service Pay, and the difference is not only conceptual. Military Service Pay is a pay element drawn across the defence forces for the conditions of service generally and it counts for dearness allowance. High Altitude and Siachen Allowances are duty allowances, they do not count for dearness allowance, and they stop on posting away. Their place within a defence salary is set out in the defence pay matrix.

Tax treatment

Both allowances are fully taxable under the default regime and exempt only up to capped monthly amounts under the old one. For tax year 2026-27 the governing law is the Income-tax Act, 2025 (Act No. 30 of 2025), in force from 1 April 2026, whose Section 202 carries the default regime formerly in Section 115BAC and whose Schedule III carries the prescribed-allowance exemptions formerly in Section 10(14). Serial numbers 12 and 13 of the Schedule III table are the successors of Section 10(14)(i) and 10(14)(ii), and both leave the amount to be prescribed. The subordinate rules are the Income-tax Rules, 2026, notified by Central Board of Direct Taxes Notification No. 22/2026, G.S.R. 198(E), dated 20 March 2026, where rule 280 prescribes the allowances and the caps for those two Schedule III entries.

The caps below are cited in their pre-2026 numbering, Rule 2BB(2) of the repealed Income-tax Rules 1962, because that is the numbering the orders and the assessment practice use. The entries and the amounts carry into the Schedule III scheme unchanged.

Three features of that table decide most real cases. Serial 13 is banded by height and stops at two figures, so a Cat-III drawer gets nothing under it: the category is defined by climate, not by an altitude the entry recognises. Serial 13 is confined by its own words to a member of the armed forces, so a CAPF employee drawing High Altitude Allowance looks instead to serial 1, at Rs. 800 or Rs. 300 depending on the place. And the Siachen figure of Rs. 7,000 a month, under serial 1 item II, is the largest exemption available anywhere in this group.

The caps have been overtaken by the allowances they were written for, because they were fixed long before the 7th Central Pay Commission and were not revised when the matrix raised the underlying rates. Rs. 7,000 against a notified Siachen Allowance of Rs. 42,500 is about 16% exempt, and about 13% against the escalated Rs. 53,125. A Cat-II drawer above 15,000 feet has Rs. 1,600 exempt out of Rs. 5,125, roughly 31%, the best ratio in the table.

The two provisos to Rule 2BB(2) bar double counting only for serial numbers 7, 8 and 9 against serial number 2. Neither serial 1 nor serial 13 is caught, so an altitude claim is not blocked by a border area or remote locality claim.

Under the default regime none of it survives. The restriction is unchanged in substance from Rule 2BB(3) as substituted by Notification 43/2023: the assessee keeps only the travel, daily and conveyance allowances and the transport allowance for a disabled employee, and no risk or hardship entry is among them. For the comparison see old versus new tax regime and income tax for government employees.

Bearing on the 8th Central Pay Commission

No rate for either allowance under the 8th Central Pay Commission exists, because that commission has not reported. Any figure circulating for High Altitude Allowance or Siachen Allowance under the 8th CPC is a projection and not an entitlement.

The structural question the next commission inherits is whether Cat-III should continue to sit five cells above Cat-II. That relationship is an artefact of the pre-2016 position, where Cat-III was pegged at 80% of the Siachen Allowance and Cat-II was a rank-wise slab topping out at Rs. 4,800, and the 7th Central Pay Commission carried it into the matrix without revisiting it. Until the 8th CPC reports, the position is the three categories in cells R1H1, R3H1 and R3H2 and the Siachen Allowance above the matrix, each as raised by the escalator step of 1 January 2024.

Related Articles

• Allowances for central government employees
• Risk and hardship allowance
• Flying allowance
• Field area allowance
• Antarctica allowance
• Hard Area Allowance
• Tough Location Allowance
• Counter-insurgency operations allowance
• Bad climate allowance
• Island Special Duty Allowance
• Ration Money Allowance
• Military Service Pay
• Defence pay matrix
• Special Duty Allowance
• National Holiday Allowance
• Central Armed Police Forces
• CAPF constable salary
• Abolished allowances under the 7th CPC
• Dearness allowance
• Salary by pay level
• Pay matrix
• Basic pay
• Income-tax Act 2025
• Income tax for government employees
• Old versus new tax regime
• Section 115BAC (default new regime)
• Take-home salary for central government employees
• Department of Expenditure
• 7th Central Pay Commission
• 8th Central Pay Commission
• Central government employees in India
• 7th CPC salary calculator

External references

• Report of the Seventh Central Pay Commission, full text
• Department of Expenditure Resolution No. 11-1/2016-IC dated 6 July 2017 on allowances
• Department of Expenditure press note on the Cabinet decision of 28 June 2017
• Ministry of Defence letter No. 1(16)/2017/D(Pay/Services) dated 18 September 2017
• Ministry of Defence, revised rates of risk and hardship allowances and concessions
• Ministry of Home Affairs OM dated 31 July 2017 on Risk and Hardship Allowance for the CAPFs and the Assam Rifles
• Ministry of Defence, Seventh Central Pay Commission documents
• Department of Expenditure, Central Pay Commission orders and circulars

References

1. Report of the Seventh Central Pay Commission (November 2015), Chapter 8.10: paragraph 8.10.27 (eligibility and the pre-2016 rank-wise rates), paragraph 8.10.28 (the definitions of Cat-I, Cat-II and Cat-III), paragraphs 8.10.66 and 8.10.67 (the matrix, the RH-Max ceiling and the placement of Siachen), paragraphs 8.10.68, 8.10.74 and 8.10.75 (the cell placement of Cat-III, Cat-II and Cat-I), paragraph 8.10.78 (concurrent admissibility) and paragraph 8.10.80 (extension to civilian employees). Paragraph 8.2.4 classifies Siachen Allowance as partially dearness-allowance indexed.
2. Ministry of Finance, Department of Expenditure, Resolution No. 11-1/2016-IC dated 6 July 2017, published in the Gazette of India Extraordinary, Part I, Section 1, No. 169: Appendix I item 22 (the Siachen Allowance revision to Rs. 42,500 and Rs. 30,000), Appendix II item 78 (High Altitude Allowance accepted as recommended) and paragraph 6 (effective 1 July 2017).
3. Ministry of Finance, Department of Expenditure, press note on the Cabinet decision of 28 June 2017 on the 7th CPC recommendations on allowances: item 3 (the Siachen enhancement and its reasoning) and item iv (High Altitude Allowance for the Defence Forces and the CAPFs, and the change in the rate range).
4. Ministry of Defence letter No. 1(16)/2017/D(Pay/Services) dated 18 September 2017: Appendix A items 9, 10, 11 and 22 (the placement of Cat-I, Cat-II, Cat-III and Siachen Allowance), Appendix C (the matrix as issued to the Services, with RH-Max at Rs. 42,500 and Rs. 30,000), paragraph 6 (effective date) and paragraph 7 (other terms and conditions continue).
5. Ministry of Home Affairs Office Memorandum No. II-27012/40/CF-3396706/2017-PF-I dated 31 July 2017: paragraph 2 rate table serial numbers 1, 2(b), 5 and 6, paragraph 5 (Border Out Posts), paragraph 6 (the leave ceiling for the field area allowances), paragraph 7 (concurrent admissibility), paragraph 9 (the election between allowance packages), paragraph 10 (the 25% escalator) and paragraph 11 (effective 1 July 2017).
6. Ministry of Finance, Department of Expenditure, Office Memorandum No. 1/1/2024-E.II(B): dearness allowance revised to 50% with effect from 1 January 2024, triggering the 25% escalator step.
7. Income-tax Act, 2025 (Act No. 30 of 2025), Section 202 (the default regime) and Schedule III, serial numbers 12 and 13 (prescribed allowances), read with the Income-tax Rules, 2026, notified by Central Board of Direct Taxes Notification No. 22/2026, G.S.R. 198(E), dated 20 March 2026, rule 280.
8. Income-tax Rules 1962, Rule 2BB(2), serial number 1 items I to III and serial number 13 (the exemption caps, cited in the numbering the orders use), and Rule 2BB(3) as substituted by Notification 43/2023 (the allowances surviving in the default regime).