Paying it into an Indian account does not make it taxable here
The most common worry is that once the Social Security lands in an Indian bank account it becomes Indian income. It does not.
India's domestic law taxes income received in India, but Section 90(2) lets you take whichever position is more beneficial, the domestic law or the treaty. Where the treaty says an income is taxable only in the US, that beats the domestic received-in-India rule. So the account the money is paid into does not decide the tax; the treaty does. Whether your Social Security is credited to a US account, an NRE account or an ordinary savings account in India, the answer is the same: taxable only in the US. Section 90(2) becomes Section 159 under the Income-tax Act 2025, but the override works the same way.
Exempt does not mean invisible, so you still disclose it
Not taxed is not the same as not reported. Two disclosures still apply once you are ordinarily resident, and skipping them is what turns a clean position into a notice.
First, the Social Security is shown as exempt income in your Indian return, in the exempt-income schedule, so the department sees why nothing was taxed on it. Second, if you hold a US account or retirement asset connected to it, that foreign asset goes in Schedule FA every year, with no minimum value threshold. Schedule FA is a disclosure duty separate from tax, and the Black Money Act 2015 treats a missing foreign asset as a default in its own right, regardless of whether any tax was due. So the sequence is: claim the treaty exemption on the income, and disclose the asset anyway. The exemption protects the tax; the disclosure protects you from the penalty.