Cess
Cess is a 4% surcharge on income tax and surcharge (Health and Education Cess) levied on all taxpayers under the Finance Act, applicable universally regardless of income level, and not shared with state governments unlike regular taxes.
Health and Education Cess (H&E Cess) at 4% applies to every income tax payer in India, regardless of income level. Unlike surcharge (which is income-dependent), cess is a flat rate applied on the total of basic income tax plus any applicable surcharge. This means even a taxpayer in the 5% basic slab pays 4% cess on the resulting tax, making the effective marginal rate 5.2% at the lowest slab and 31.2% at the highest 30% slab (excluding surcharge).
Cess was consolidated into a single 4% Health and Education Cess from FY 2018-19 onwards. Previously, there were two separate cesses — a 3% Education and Secondary Higher Education Cess, plus a 1% Swachh Bharat Cess that was applicable on service tax (since merged into GST). The current 4% cess effectively replaces these multiple levies.
For capital gains computations, cess applies at 4% on the sum of the capital gains tax and any surcharge. On equity LTCG, the base tax is 12.5%. With a 15% surcharge (applicable on LTCG even for high-income taxpayers), the combined amount is 12.5% + (15% of 12.5%) = 14.375%. Adding 4% cess on ₹14.375 gives the final effective rate of approximately 14.95%. Similarly, for equity STCG at 20%, the effective rate including 15% surcharge and 4% cess works out to approximately 23.92%.
Cess revenues are constitutionally ring-fenced for the purposes designated — in this case, health and education funding. Unlike regular taxes, cess is not shared with state governments through the Finance Commission's divisible pool, which has been a point of contention between the central and state governments, as increasing cess effectively reduces states' share of central tax revenues.
For ITR computation purposes, cess is automatically computed by the income tax portal based on applicable tax liability and surcharge — taxpayers do not need to separately calculate it when using the online filing portal. However, when computing estimated advance tax liability manually, forgetting to add cess leads to underpayment and potential interest under Sections 234B and 234C.