The above rule applies, if the amount involved on each occasion exceeds Rs. 50,000/-.
Appendix II of the Finance Act 2006, An analysis of relevant rules of Income-Tax Rules.
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"3.1c Fixed deposits in banks - Transaction involving time deposits (i.e., fixed deposits) in any bank (nationalised banks, scheduled banks, co-operative banks, etc.), are next specified, if the amount involved on each occasion exceeds Rs. 50,000. If a minor having no taxable income desires to open such an account, he must quote PAN of his father or mother or guardian, as the case may be in the document covering the transaction (i.e., application for opening account). If the parent or a guardian does not have a PAN, declaration in Form No. 60 can be filed. However, if the father does not have a PAN but the mother has a PAN, declaration in Form No. 60 cannot be filed. The PAN of the mother must be quoted. The same will apply to cases where the father has a PAN but not the mother. The PAN of the father must be quoted."