20 Month 8th CPC Arrears Calculator — 7th CPC Historical Benchmark

Calculate 20 months of 8th Pay Commission arrears matching the historical 7th CPC implementation timeline (Jan 2026 to Aug 2027). Full pay matrix breakdown and tax relief.

⚡ 8th CPC Interactive 7th CPC Historical Benchmark 20 Months Accumulation August 2027 Payout

🧮 Arrears Calculator Parameters

Central Govt, Defence & Pensioners

Select Pay Level (Preset Helper)

Current Basic Pay (₹) Your 7th CPC monthly basic pay as on 1 Jan 2026.

Current DA Rate (%) Expected 55% benchmark for Jan 2026

Fitment Factor Projected 8th CPC multiplier

Expected Revised Basic Pay (₹) Auto-calculated: Basic × Fitment Factor (rounded to 100). Override anytime.

HRA Classification

Transport Allowance (TA)

Effective Date Statutory 1 Jan 2026

Implementation Date Cabinet notification date

Arrear Months Duration

Estimated Arrears Summary

Formula: Monthly Difference × 20 Months

8th CPC Model

Total Estimated Lump-Sum Arrears

₹0

Revised Pay Calculator →

20 Month 8th CPC Arrears Calculator

Pay Level 1 to 18 Arrears Payout Table (20 Months)

Calculated at expected 2.28 Fitment Factor and 55% current DA. Reflects standard entry pay for every pay level from Group C to Cabinet Secretary.

Pay Level & Cadre	7th CPC Basic	8th CPC Basic (2.28)	Monthly Basic Diff	Monthly Gross Diff	Gross Arrears (20 Mo)	Net Arrears (after NPS)
Level 1 MTS / Group D Entry	₹18,000	₹41,000	+₹23,000	+₹18,708	₹374,160	₹328,160
Level 2 LDC / Junior Clerk	₹19,900	₹45,400	+₹25,500	+₹20,663	₹413,260	₹362,260
Level 3 Constable / Skilled Staff	₹21,700	₹49,500	+₹27,800	+₹24,045	₹480,900	₹425,300
Level 4 Head Constable / Technician	₹25,500	₹58,100	+₹32,600	+₹27,715	₹554,300	₹489,100
Level 5 UDC / Senior Clerk	₹29,200	₹66,600	+₹37,400	+₹31,440	₹628,800	₹554,000
Level 6 Sub-Inspector / Teacher	₹35,400	₹80,700	+₹45,300	+₹37,510	₹750,200	₹659,600
Level 7 Section Officer / Inspector	₹44,900	₹102,400	+₹57,500	+₹46,925	₹938,500	₹823,500
Level 8 Assistant Accounts Officer	₹47,600	₹108,500	+₹60,900	+₹49,520	₹990,400	₹868,600
Level 9 Senior Section Officer	₹53,100	₹121,100	+₹68,000	+₹55,015	₹1,100,300	₹964,300
Level 10 Group A Entry / DSP	₹56,100	₹127,900	+₹71,800	+₹57,925	₹1,158,500	₹1,014,900
Level 11 Senior Time Scale (STS)	₹67,700	₹154,400	+₹86,700	+₹69,425	₹1,388,500	₹1,215,100
Level 12 Junior Administrative Grade	₹78,800	₹179,700	+₹100,900	+₹80,360	₹1,607,200	₹1,405,400
Level 13 Selection Grade (Director)	₹123,100	₹280,700	+₹157,600	+₹124,035	₹2,480,700	₹2,165,500
Level 13A Senior Selection Grade	₹131,100	₹298,900	+₹167,800	+₹131,875	₹2,637,500	₹2,301,900
Level 14 Joint Secretary / SAG	₹144,200	₹328,800	+₹184,600	+₹144,830	₹2,896,600	₹2,527,400
Level 15 Principal Secretary / HAG	₹182,200	₹415,400	+₹233,200	+₹182,250	₹3,645,000	₹3,178,600
Level 16 Additional Secretary / HAG+	₹205,400	₹468,300	+₹262,900	+₹205,130	₹4,102,600	₹3,576,800
Level 17 Special Secretary / Apex Scale	₹225,000	₹513,000	+₹288,000	+₹224,470	₹4,489,400	₹3,913,400
Level 18 Cabinet Secretary of India	₹250,000	₹570,000	+₹320,000	+₹249,120	₹4,982,400	₹4,342,400

Primary Benchmark 7th CPC Historical Precedent

The 20-Month Benchmark Model: Grounded in 7th CPC Precedent

📌 Key Takeaways at a Glance

Historical Benchmark: Matches the exact 7th CPC timeline between effective date (Jan 2016) and final allowance rollout (Aug 2017).
Level 1 MTS Payout: Gross arrears of approx. ₹2,30,000.
Level 7 Officer: Gross arrears of approx. ₹11,50,000.
DDO Action: Ensure bank details and PAN are validated on PFMS for smooth electronic credit.

The 20-month model is the most historically grounded projection for the 8th Central Pay Commission. In the 7th CPC, the Commission took nearly 20 months from start to final implementation across basic pay and allowances.