How can I pay income tax online in India?

To pay income tax online in India, you need to visit the Income Tax Department e-filing portal (incometax.gov.in). Then click e-Pay Tax under Quick Links, enter PAN/TAN, and verify with mobile OTP. Select Income Tax, choose Assessment year and payment type. Then, you need to enter details, pay via net banking, debit card, or UPI, and save the challan.