About the DA Arrear Calculator
When DA is raised, it applies from 1 January or 1 July, but the order comes a few months later. The months already paid at the old rate are paid as arrears with the first salary that carries the new DA.
If the Cabinet approves the DA by about the 20th of a month, it is usually paid with that month's salary; later in the month, with the next month's. The 63% DA from July 2026 (approved 28 October 2026) is paid with the November salary, so the arrears are for July–October: 4 months.
Arrears include DA on transport allowance. NPS (and UPS) members have 10% of the DA arrear deducted for their pension account; HRA does not change with DA, so there is no HRA arrear.
