DA Calculator 2026 — Dearness Allowance Hike & Arrears

What a DA hike is actually worth

Dearness Allowance is a percentage of basic pay — nothing else. Not gross salary, not basic plus HRA, not CTC. At the current 60% rate, applying DA to gross instead of basic overstates the amount by roughly 1.6 times, and that single error is behind most of the inflated numbers circulating in WhatsApp forwards every October.

A 3 percentage point rise therefore means exactly 3% of your basic, every month. On a Level 1 basic of ₹18,000 that is ₹540 a month. On a Level 13 basic of ₹1,23,100 it is ₹3,693 a month. Useful, but not life-changing — and worth knowing before you plan around a headline.

Why arrears exist, and when they land

The revision is effective from 1 July but the Cabinet approves it months later. Every month between the effective date and the notification accrues as arrears. For the July 2026 instalment that is July, August and September — 3 months — normally released as a lump sum along with the October salary.

The arrear is calculated on the percentage-point difference only. It is not the full revised DA for those months, which is another frequent misunderstanding. If you are owed 3% of basic for 3 months, the arrear on a ₹50,000 basic is ₹4,500, not ₹94,500.

Pensioners get the same thing under a different name

For the roughly 66 lakh central government pensioners, the identical percentage is paid as Dearness Relief on basic pension, with the same effective date and the same arrears. The calculator above works unchanged — enter your basic pension in place of basic pay. Family pensioners are covered too.

The tax trap in the arrears

DA is fully taxable as salary income under both regimes. Arrears are taxed in the year you receive them, not the year they relate to, so a large back payment can push you into a higher slab for a year you never actually earned that much in.

Section 89(1) exists precisely for this: it recomputes the tax as if the arrears had been taxed in the years they belonged to, and refunds the difference. The catch is procedural — you must file Form 10E on the income tax portal before filing your return. Claim the relief without filing Form 10E first and the department will simply disallow it. For a three-month DA arrear the amounts are usually small enough not to matter, but the same rule applies to the far larger arrears that will follow 8th CPC implementation.

What happens to DA under the 8th Pay Commission

It goes to zero. When a new pay commission is implemented, the accumulated DA is merged into the revised basic pay through the fitment factor, and the DA counter restarts at 0% on the new, higher basic. This is the detail that makes a 2.86x fitment factor look far more generous than it is — you are not getting 2.86x your salary, you are getting 2.86x your basic while losing the 60%+ DA that was sitting on top of it. The 8th Pay Commission calculator models this correctly.

One knock-on effect worth knowing: once DA crossed 50% in January 2024, HRA was automatically restored to 30%, 20% and 10% of basic for X, Y and Z class cities. That threshold has already been passed, so further DA rises do not change HRA percentages — though the tax-free portion of your HRA is a separate calculation entirely.

What to do with the arrears

A three-month arrear is a one-off lump sum that most people absorb into ordinary spending without noticing. If you would rather it did something, it is a clean candidate for a lump sum into an existing goal — the goal planner shows how much a one-time top-up shortens a target, and PPF at 7.1% tax-free is the obvious home for the 80C portion if you are still on the old regime.