Sources & Data Verification

Every figure used across this site's calculators, with the exact government order it comes from and when it was last checked against that source. Each calculator page links back to the relevant section here.

DA Calculator

Assumes: DA is calculated on Basic Pay only, per the standard formula (Basic Pay × DA% ÷ 100, rounded to the nearest rupee). Does not include NPA, personal pay, or other allowances some categories of employees may have added to their DA base. Arrears = (new monthly DA − old monthly DA) × number of months.

Source & verification

Source: Department of Expenditure, Ministry of Finance
Order/notification: 1/1(i)/2026-E.II(B), dated 22 April 2026
Effective date: 1 January 2026
Last verified: 20 August 2026

Confirmed directly against the source document above. Directly read from the OM PDF (same scanned-document caveat as above — WebFetch's text extraction fails on it, but it was read and rendered correctly). Confirms: DA enhanced from 58% to 60% of Basic Pay, effective 1 January 2026, signed by Samir Kumar Das, Deputy Secretary — and explicitly references the 58% entry's own OM (1/4(i)/2025-E.II(B), 6 Oct 2025) as its prior order, which is how that OM number was found. The AICPI-IW figure of 148.6 is NOT cited in this OM (it never mentions AICPI numbers at all) and remains a secondary-sourced figure from a different publisher (Labour Bureau) — primary verification of the rate itself does not resolve this.

Source & verification

Source: Department of Expenditure, Ministry of Finance
Order/notification: 1/4(i)/2025-E.II(B), dated 6 October 2025
Effective date: 1 July 2025
Last verified: 20 August 2026

Confirmed directly against the source document above. Directly read from the OM PDF (a scanned document — automated text-extraction tools fail on it, but it renders correctly and was read directly). Confirms: DA enhanced from 55% to 58% of Basic Pay, effective 1 July 2025, signed by Samir Kumar Das, Deputy Secretary. Also confirms the rounding rule: fractions of 50 paise and above round up to the next rupee, fractions below 50 paise are ignored — matches this project's Math.round() implementation exactly. The OM does not itself cite any AICPI-IW figures; that index is published separately by the Labour Bureau and was not independently verified here.

In-Hand Salary Calculator

Assumes: no income tax deduction, a uniform 40 cells per Level, and no NPA, personal pay, or other department-specific allowances.

Source & verification

Basic Pay / Pay Matrix

Source: Ministry of Finance, Department of Expenditure — Central Civil Services (Revised Pay) Rules, 2016
Order: G.S.R. 721(E), published in the Gazette of India, Extraordinary, Part II, Sec 3(i), dated 25 July 2016 (w.e.f. 01.01.2016)
Effective: 1 January 2016

Confirmed directly against the source.

House Rent Allowance

Source: Ministry of Finance, Department of Expenditure
Order: 2/5/2017-E.II(B), dated 7 July 2017
Effective: 1 July 2017

Confirmed directly against the source.

Transport Allowance

Source: Ministry of Finance, Department of Expenditure
Order: 21/5/2017-E.II(B), dated 7 July 2017
Effective: 1 July 2017

Confirmed directly against the source.

NPS

Source: Pension Fund Regulatory and Development Authority / PIB (Cabinet decision)
Order: PIB PRID 1555377 (Cabinet decision, 6 Dec 2018)
Effective: 1 April 2019

Needs manual verification — see notes below.

Age Eligibility Calculator

Assumes: eligibility is inclusive at both the minimum and maximum age boundary. Ex-servicemen relaxation is not modeled.

Source & verification

RRB NTPC Graduate (CEN 06/2025)

Source: Railway Recruitment Board
Order: CEN 06/2025
Effective: 20 October 2025

Needs manual verification — see notes below.

RRB NTPC Undergraduate (CEN 07/2025)

Source: Railway Recruitment Board
Order: CEN 07/2025
Effective: 20 October 2025

Needs manual verification — see notes below.

Category relaxation (DoPT standard)

Source: Department of Personnel & Training (DoPT)
Order: OM No. 15012/2/2010-Estt.(D), dated 27 March 2012
Effective: 27 March 2012

Needs manual verification — see notes below.