You can download an e-PAN card using your Aadhaar number through the Income Tax Department's official portal or the NSDL and UTIITSL websites. Here's a step-by-step guide on how to do it:

Through Income Tax Department's e-Filing Portal

1. Visit the e-Filing Portal:
• Go to the official e-Filing portal: Income Tax e-Filing.
2. Login:
• Log in using your PAN, Aadhaar number, or other credentials.
• If you don't have an account, you can register using your PAN or Aadhaar details.
3. Navigate to the e-PAN Services:
• After logging in, go to the 'Quick Links' section and select 'Instant e-PAN'.
4. Select 'Download PAN':
• You may need to enter your Aadhaar number and follow the authentication process, including OTP verification sent to your registered mobile number.
5. Download e-PAN:
• Once verified, you can download your e-PAN in PDF format.

Through NSDL or UTIITSL Websites

NSDL

1. Visit the NSDL e-Governance website:
• Go to NSDL e-Governance.
2. Select 'Download e-PAN Card (For PAN Allotted in last 30 days)':
• If your PAN was issued recently, you can download it using this option. You'll need your Aadhaar number, PAN, and date of birth.
3. OTP Verification:
• Enter the OTP sent to your registered mobile number and email.
4. Download e-PAN:
• After verification, you can download the e-PAN.

UTIITSL

1. Visit the UTIITSL PAN Services website:
• Go to UTIITSL PAN Services.
2. Click on 'Download e-PAN':
• Enter your PAN and Aadhaar details.
3. OTP Verification:
• Complete the OTP verification.
4. Download e-PAN:
• Download your e-PAN after successful verification.

Make sure your Aadhaar details are correctly linked to your PAN for this process to work smoothly. Additionally, your mobile number must be registered with your Aadhaar to receive OTPs for verification.