You can terminate your account in either of the following ways:
Submit a Request via the Support Menu:
Log in to your SumoPayroll account
Go to the Support Menu
Raise a request for account termination
OR
Email Support:
Write to: support@sumopayroll.com
Mention your account details and clearly state that you want to terminate your account.
Note: Before terminating, you are allowed to export all relevant data for your records.