Central Government Dearness Allowance: How DA is Calculated and When It is Revised
Central government employees' Dearness Allowance (DA) is revised twice a year — typically in January and July — based on the All India Consumer Price Index for Industrial Workers (AICPI-IW). The revision is announced via Cabinet approval and issued as an Office Memorandum by the Department of Expenditure.
1What to Know
The central government DA is calculated using a formula based on the rolling 12-month average of the All India Consumer Price Index for Industrial Workers (AICPI-IW), published monthly by the Labour Bureau. The formula for DA % for 7th Pay Commission employees is: [(Average AICPI-IW for last 12 months / 261.42) - 1] × 100. Once the Cabinet approves a DA revision, the Department of Expenditure (doe.gov.in) issues a signed Office Memorandum (OM) which is the legally binding document authorising the pay revision. DA is calculated as a percentage of basic pay and is included in gross salary from the revised effective date. Arrears (if the effective date is backdated) are typically paid as a lump sum.
2Why It Matters
DA revisions directly increase your gross monthly salary if you are a central government employee, and increase Dearness Relief (DR) if you are a central government pensioner. A DA increase also raises House Rent Allowance (HRA) if your city classification changes the HRA threshold.
3Who May Be Affected
All active central government employees drawing salary under the 7th Pay Commission pay matrix. Central government pensioners and family pensioners receiving Dearness Relief (DR). Employees and pensioners of central autonomous bodies whose pay is linked to central government scales.
Announcement vs Official Order
The Cabinet announcement (often reported in media) is the approval stage. The legally binding document is the signed Office Memorandum (OM) issued by the Department of Expenditure. The effective date (e.g., 1 January or 1 July) may differ from both the announcement date and the OM date. Actual payment (credit to bank account) happens after the OM is issued and payroll is processed — often 4–8 weeks after the effective date.
✓What to Verify
Look for the signed Office Memorandum on doe.gov.in under "Office Memorandums / Orders". Do not rely on unofficial WhatsApp forwards or social media posts for specific percentage figures or payment timelines. The OM will specify the exact DA percentage, effective date, and instructions for arrears.
Official Source
Always verify information from the official government or regulatory body source below before making any financial decisions.
Visit Official Source ↗Opens Ministry of Finance — Department of Expenditure · External official website
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