How much money can I gift or send to my parents in India each year without tax problems?

On the US side, sending money to parents in India is a gift. For 2025 the IRS annual gift-tax exclusion is $19,000 per recipient (indexed yearly), so you and your spouse could together give $38,000 to one parent with no gift-tax return; larger gifts require Form 709 but usually just reduce your lifetime exemption rather than creating tax due. On the India side, gifts from a child to a parent are exempt from Indian gift tax because parents are 'relatives' under the Income Tax Act, with no cap. So the practical limit is really a US paperwork threshold, not a hard ceiling. Wire the funds into your parents' resident account or your NRO account. Keep documentation showing the recipient relationship.