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8th Pay Commission Arrears Calculator

How much you could receive for the months between the effective date and the day the new pay starts, with DA, increments and NPS.

Your details

I am
₹
Fitment factor2.28

Widely cited estimate · 42.5% real rise over basic + 60% DA

The report is due around May 2027; pick the last month before the new pay reaches your account.

Annual increment month
DA assumptions

DADR assumptions

%
pts
%
pts

60% since Jan 2026, 63% expected from Jul 2026.

Pension scheme & allowance arrears
Pension scheme

Total arrears (est.)

24 months

₹7,80,276

Jan 2026 – Dec 2027

Revised basic pay
₹1,02,400
Average per month
₹32,512
NPS / UPS (10%)
−₹78,028
Net before tax
₹7,02,248
Arrears month by month
MonthOldNewArrear
Jan 202660% → 0%₹71,840₹1,02,400₹30,560
Feb 202660% → 0%₹71,840₹1,02,400₹30,560
Mar 202660% → 0%₹71,840₹1,02,400₹30,560
Apr 202660% → 0%₹71,840₹1,02,400₹30,560
May 202660% → 0%₹71,840₹1,02,400₹30,560
Jun 202660% → 0%₹71,840₹1,02,400₹30,560
Jul 202663% → 2%₹75,306₹1,07,406₹32,100
Aug 202663% → 2%₹75,306₹1,07,406₹32,100
Sep 202663% → 2%₹75,306₹1,07,406₹32,100
Oct 202663% → 2%₹75,306₹1,07,406₹32,100
Nov 202663% → 2%₹75,306₹1,07,406₹32,100
Dec 202663% → 2%₹75,306₹1,07,406₹32,100
Jan 202766% → 4%₹76,692₹1,09,512₹32,820
Feb 202766% → 4%₹76,692₹1,09,512₹32,820
Mar 202766% → 4%₹76,692₹1,09,512₹32,820
Apr 202766% → 4%₹76,692₹1,09,512₹32,820
May 202766% → 4%₹76,692₹1,09,512₹32,820
Jun 202766% → 4%₹76,692₹1,09,512₹32,820
Jul 202769% → 6%₹80,444₹1,15,010₹34,566
Aug 202769% → 6%₹80,444₹1,15,010₹34,566
Sep 202769% → 6%₹80,444₹1,15,010₹34,566
Oct 202769% → 6%₹80,444₹1,15,010₹34,566
Nov 202769% → 6%₹80,444₹1,15,010₹34,566
Dec 202769% → 6%₹80,444₹1,15,010₹34,566

How 8th Pay Commission arrears are calculated

Pay commissions usually take effect from a date that has already passed by the time their pay matrix is approved. The 7th CPC, for example, took effect from 1 January 2016 but was paid from August 2016, so employees received seven months of arrears. The 8th CPC is expected to follow the same pattern from 1 January 2026.

  1. Old pay for each month = 7th CPC basic pay + DA paid that month.
  2. New pay = 7th CPC basic × fitment factor (nearest ₹100) + DA on the new pay.
  3. Arrear = new pay − old pay. Increments move both to the next cell in the month you pick.
  4. Deductions: NPS/UPS members lose 10% of the pay + DA arrears to their pension account. Income tax applies, with possible relief under Section 89.

DA keeps moving on both sides while the commission works. The old pay gets 7th CPC instalments; the revised pay gets smaller percentage rises, but on a much bigger basic. The orange bars above mark each January and July, when a new DA rate starts.

8th Pay Commission pension arrears

For pensioners, basic pension is multiplied by the same fitment factor, subject to a minimum of ₹9,000 × factor. Dearness Relief resets to 0% on the revised pension. Choose “Pensioner” above to see your pension arrears with DR.

8th CPC arrears FAQs

How are 8th Pay Commission arrears calculated?
For each month from the effective date until the new pay is actually paid, arrears = (revised basic pay + DA on it) − (old basic pay + DA you were paid). The calculator repeats this month by month, applying DA instalments every January and July and your annual increment.
From which date will 8th CPC arrears be paid?
If the 8th CPC takes effect from 1 January 2026, as expected from past practice, arrears would be counted from that date. The government has not confirmed the effective date yet.
Will HRA and TA arrears be paid under the 8th Pay Commission?
Not necessarily. Under the 7th CPC, arrears of pay and DA were paid from January 2016, but revised allowances such as HRA applied only from 1 July 2017, with no arrears for the gap. Turn on “Include HRA & TA” to see the difference if allowances are also paid from January 2026.
Is NPS deducted from 8th CPC arrears?
Yes, for NPS/UPS members the 10% employee share is deducted from the pay + DA portion of arrears, and the government adds its share to your account. Income tax is also due on arrears, though relief under Section 89 can reduce it.
How do pensioners’ arrears work?
Basic pension is multiplied by the fitment factor (with a minimum of ₹9,000 × factor), and DR restarts at 0%. Arrears = (revised pension + new DR) − (old pension + old DR) for each month. Switch the calculator to “Pensioner” to see yours.
What DA should I assume for the arrears period?
DA is 60% from January 2026, and 63% is expected from July 2026. We add 3 points every six months on the old pay. On the new, larger basic pay, DA rises more slowly (about 2 points per instalment) because the same inflation is a smaller percentage of it.

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