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Calculators

Free, no-login tools for the numbers government employees work out most often. All calculations run in your browser.

Jump to: GST · DA arrear · Leave surrender · Gratuity / DCRG · Income tax (new vs old)

Quick GST Calculator

Amount (₹)

GST rate

Amount is

Splits into CGST + SGST for intra-state supply.

DA Arrear Calculator

Basic pay (₹ / month)

Arrear months

Old DA %

New DA %

Arrear = Basic × (New % − Old %) ÷ 100, for each month in the arrear period.

Earned Leave Surrender Calculator

Basic pay (₹ / month)

DA % (current)

Days to surrender

Surrender value = (Basic + DA) ÷ 30 × days. Lifetime surrender is capped at 300 days.

Gratuity / DCRG Calculator

Last emoluments — Basic + DA (₹)

Qualifying service (years)

DCRG = emoluments × ¼ × six-monthly periods, capped at 16½ × emoluments and ₹25,00,000.

Income Tax — New vs Old Regime

Gross salary income (₹ / year)

Old-regime deductions (80C etc., ₹)

Estimate based on FY 2025-26 slabs, with standard deduction and section 87A rebate, plus 4% cess. It ignores surcharge and your full personal situation — always confirm on the income tax portal.

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