Hi Kuldeep ji,
1️⃣ No, the son will not pay tax on ₹40 lakh if it's a genuine gift from the father. Gifts received from a relative (as per Section 56(2)(x)) are exempt from income tax, even if the amount is large.
2️⃣ Gift deed is not mandatory for tax filing if it's from a close relative, but for clarity and legal proof, it's highly recommended.
3️⃣ Registration is not compulsory for movable assets (like money), but it's good practice if the amount is significant — especially for future disputes or scrutiny.
4️⃣ Will and Gift Deed serve different purposes — if the amount is transferred during the father's lifetime, a gift deed is applicable. Will applies post-death.
💡 If you want to avoid confusion and ensure compliance, it’s better to document the gift via a simple deed.
For full guidance and sample gift deed formats, you can check here:
👉 Smart Tax Idea - Gift Deed & Tax Compliance Help
— CA Advisor | Smart Tax Idea