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₹MoneySuttra

Methodology

Every calculator on MoneySuttra is built from a standard formula for its category — the exact formula is shown in the "How this is calculated" panel on every result.

Statutory data sources

  • Income tax slabs: Union Budget notifications from the Ministry of Finance (CBDT).
  • PPF, NPS, and small-savings rates: quarterly notifications from the Ministry of Finance.
  • Gratuity rules and exemption ceiling: the Payment of Gratuity Act, 1972 and its amendments.
  • GST rates: GST Council notifications.

Refresh cadence

Tax-slab and rate-dependent calculators are reviewed after every Union Budget (February) and every quarterly small-savings rate notification. Each such calculator shows the date its figures were last checked — always verify against the current official notification before making a financial decision based on it.