8th Pay Commission Arrears Calculation: Step-by-Step Guide

No arrears payment schedule has been released, and none can be until the Government accepts the 8th CPC report. But because the revision is widely expected to take effect from 1 January 2026, employees and pensioners should expect arrears covering the months between that date and the start of revised pay.

How 8th CPC Arrears Will Likely Be Worked Out

• Period: from the effective date to the month before revised pay starts. That could be about two years if revised pay starts in early 2028.
• Components: Basic pay and DA. The DA already paid (60%, and 63% from July 2026 once approved) is adjusted against the revised pay, so arrears are smaller than the jump in basic pay.
• Allowances: under the 7th CPC, revised HRA and most allowances started only from 1 July 2017, with no retrospective arrears.
• Payment mode: under the 7th CPC, arrears were paid in one instalment soon after the pay orders. The Government could choose instalments this time. That will be decided in the implementation order.

Our Arrears Calculator works this out month by month, including DA and July increments.

8th Pay Commission Arrears Calculation: Step by Step

Arrears are the difference between what you should have been paid under the new pay matrix and what you were paid under the old one, for every month from the effective date until revised pay starts. Only Basic + DA is normally counted.

1. Find your revised basic: current basic × fitment factor, rounded to the matching cell. Example: ₹44,900 × 2.28 = ₹1,02,400.
2. Work out new DA for each month: DA restarts on the new basic. Using the same price index, it is roughly (1 + old DA) ÷ 1.58 − 1, rounded down: about 1% for January–June 2026 and 3% for July–December 2026.
3. Subtract what you were paid: old basic + old DA (60% for January–June 2026, 63% from July 2026 once approved).
4. Add up every month from January 2026 to the month before revised pay starts, adding July increments to both old and new pay.

Estimated arrears by level (entry cell, no increments)

Assumes DA of 60% (Jan–Jun 2026), 63% (Jul–Dec 2026) and +3 points every half-year after that. For your exact cell, with July increments, use the 8th Pay Commission Arrears Calculator.

How Past Pay Commission Arrears Were Paid

A longer gap means larger arrears, which is why the Government has sometimes split the payment. A 1 January 2026 effective date does not by itself guarantee arrears; the implementation order will specify the period and the payment mode.

Saving Tax on Arrears

Arrears are taxed in the year they are received, but you can claim relief under Section 89(1) by filing Form 10E online before your return. This spreads the arrears back over the years they relate to.

Frequently Asked Questions

Has the 8th Pay Commission arrears schedule been released?

No. It can only come after the Government accepts the report, expected around May 2027. Arrears are expected from 1 January 2026.

Will HRA arrears be paid?

Possibly not. Under the 7th CPC, allowances such as HRA were revised from 1 July 2017 without retrospective arrears.

How are 8th Pay Commission arrears calculated?

For each month from the effective date: (revised basic + new DA) − (old basic + old DA actually paid). Add up all months, including July increments. HRA and most allowances have not historically been paid as arrears.

Will arrears be paid in instalments?

Not decided. The 5th and 6th CPC arrears were paid in two instalments; the 7th CPC arrears were paid in one go in 2016-17.

Sources

• 8th Central Pay Commission — official website
• 8th CPC — What's New (visit notices)
• Careers360 — Cabinet approves ToR of 8th Pay Commission
• Gconnect — Lok Sabha reply (1 Dec 2025)
• The Sunday Guardian — will employees get arrears from January 2026? (16 Oct 2026)

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