Open Snapchat
Tap your profile icon
Tap the Settings gear
Scroll down to Account Actions
Tap Delete Account
Log in to the Snapchat accounts portal
Enter your username and password
Tap Continue
Wait 30 days without logging in
Your Snapchat account will be permanently deleted after 30 days
Go to accounts.snapchat.com
Log in to your Snapchat account
Select Delete My Account
Enter your username and password
Select Continue
Do not log in for 30 days