Indexation based on UDS registration or flat handover year

For indexation, you can take:

👉 FY 2009–10 (year of UDS registration = year of acquisition)

NOT FY 2011–12 (handover year).

This is the legally correct position.

Thank you very much Sir.

For a 2025–26 sale, the base year is not chosen simply by the UDS registration date or possession date. The key issue is whether the flat is treated as a long-term capital asset and whether indexation is available under the law applicable to your sale. For transfers on or after 23 July 2024, indexation is generally withdrawn; resident individuals/HUFs selling land or buildings acquired before that date may, however, be able to compare the tax under the amended rules with the tax using the old indexed-cost method, subject to the statutory conditions.

If the old indexed-cost method applies, the acquisition date and cost need to be determined from the agreement and payment/construction facts. Where UDS was acquired in 2009–10 and the flat was completed and handed over in 2011–12, the relevant acquisition date for the constructed flat may depend on the nature and terms of the allotment/construction agreement; it is not automatically the UDS registration year. Obtain the agreement, payment schedule and possession/completion documents to establish the dates and cost components before computing the comparison.

For this sale, the capital-gains workflow should capture the UDS and construction timelines separately before testing the available tax computations. Manual reconciliation of agreements, payment records and cost schedules is difficult, while automation can reduce repetitive work and leave the tax treatment under professional judgment. At Jir AI, our 2,000+ AI agents and 650+ integrations streamline GST, ITR, TDS, TCS and other compliance workflows, helping reduce manual workload by up to 70%. Message us on WhatsApp to explore the workflow: https://wa.me/message/3HVOZ7HIY4ESC1