The notified Cost Inflation Index for FY/Tax Year 2026–27 is 384.
The notified Cost Inflation Index for FY/Tax Year 2026–27 is 384. It is used only where indexation remains legally available; it is not an automatic multiplier for every long-term asset sold in 2026–27.
The phrase cost inflation index 2026 property sale compresses several legal questions into one line. The outcome cannot be trusted until the page identifies the relevant person, transaction, period, source document and statutory exception. A high-quality calculator should therefore show why an amount was accepted or rejected instead of displaying a black-box answer.
General post-23 July 2024 LTCG taxation removed indexation. A resident individual or HUF selling qualifying land/building acquired before 23 July 2024 can compare tax at 12.5% without indexation with tax at 20% using indexation. CII also remains relevant to historical/transition computations where the law permits it.
Tax Year 2026–27 means income earned from 1 April 2026 under the Income-tax Act, 2025. AY 2026–27 relates to FY 2025–26 and remains under the Income-tax Act, 1961.
| Check | What to verify |
|---|---|
| Classification | Asset/income type, holding period and special provision |
| Computation base | Gross consideration/income less only permitted items |
| Adjustment | Eligible loss, threshold, exemption or deduction |
| Tax | Applicable normal/special rate, surcharge and 4% cess |
| Credit | TDS/TCS/advance tax adjusted after gross liability |
A qualifying property cost ₹40 lakh in FY 2012–13 when CII was 200 and is sold in FY 2026–27 when CII is 384. Indexed cost is ₹76.8 lakh before improvement adjustments. Compare 20% on indexed gain with 12.5% on unindexed gain.
The example is intentionally presented as a calculation trail. The final result must be recomputed when a date, residence test, holding period, asset classification, employee category, notification, treaty or source document changes.
Capital-gain pages often begin with a percentage and therefore miss the decisive work: identifying the asset, statutory acquisition date, transfer event, cost rule, holding period and special deeming provision. A 12.5%, 20% or 30% rate is meaningful only after the gain has been correctly characterised. TDS or STT does not perform that classification.
The computation should retain each acquisition lot, corporate action, cost adjustment, transfer expense, loss set-off and exemption allocation. Aggregation should occur only after character and rate are determined. This matters where a single financial year contains equity STCG, equity LTCG, property gain, VDA transactions and brought-forward losses, each with a different tax treatment.
The Finin2min calculator linked below should retain the user's original input, display the legally accepted amount, identify the formula and rate, and state the reason for every cap or rejection. Rate-sensitive output should show the applicable tax year or effective date. Where facts cannot be automated—such as treaty PE, beneficial ownership, continuity of service or property valuation—the tool should flag professional review rather than make an unsupported assumption.
Generic pages also tend to mix a tax credit with a deduction, a labour entitlement with an income-tax exemption, or a supply value with business income. That can produce a mathematically neat but legally wrong result.
For the complete rules on this topic, see the core guide: Capital Gains Tax Under the Income-tax Act 2025.
See the broader Income-tax Act 2025 study guide hub for related rules and calculators on this topic.
The notified Cost Inflation Index for FY/Tax Year 2026–27 is 384. It is used only where indexation remains legally available; it is not an automatic multiplier for every long-term asset sold in 2026–27.
Finin2min rule: classify first, calculate second, and document every assumption.
Use the current official instrument, portal or regulator publication before acting. This panel separates the category authority from page-specific references.