Form 26AS would be required to be extended beyond the information about tax deducted (TDS), it is proposed to introduce a new section 285BB in the Act regarding the annual
financial statement.

The Budget 2020 has proposed to expand the scope of Form 26AS by including property and share transactions. These amendments will take effect from 1st June,2020.
According to the Budget document, “Section 203AA of the Act, inter-alia, requires the prescribed income-tax authority or the person authorised by such authority referred to in sub-section (3) of section 200, to prepare and deliver a statement in Form 26AS to every person from whose income, the tax has been deducted or in respect of whose income the tax has been paid specifying the amount of tax deducted or paid.”

If you have paid taxes on your income or tax has been deducted from your income, the Income tax department already has these details in their database. These details are mentioned in Form 26AS. You can access the Form 26AS from the income-tax website using your Permanent Account Number (PAN).

Rationalisation of provision relating to Form 26AS
According to the Budget document, the Form 26AS as prescribed in the Rules, inter-alia, contains the information about tax collected or deducted at source. However, with the advancement in technology and enhancement in the capacity of system, multiple information in respect of a person such as sale/purchase of immovable property, share transactions etc. are being captured or proposed to be captured. In future, it is envisaged that in order to facilitate compliance, this information will be provided to the assessee by uploading the same in the registered account of the assessee on the designated portal of the Income-tax Department, so that the same can be used by the assessee for filing of the return of income and calculating his correct tax liability.

As the mandate of Form 26AS would be required to be extended beyond the information about tax deducted, it is proposed to introduce a new section 285BB in the Act regarding annual financial statement. This section proposes to mandate the prescribed income-tax authority or the person authorised by such authority to upload in the registered account of the assessee a statement in such form and manner and setting forth such information, which is in the possession of an income-tax authority, and within such time, as may be prescribed.

Source : https://economictimes.indiatimes.com/wealth/tax/form-26as-to-have-information-beyond-tds-will-include-property-share-transactions/articleshow/73843384.cms?from=mdr