Quicko is a registered ERI. As per regulations, Quicko is supposed to store customer data for seven years.
In case you have already efiled your ITR in other ways and want to delete your data. Following are the steps to deactivate Tax Payer on Quicko:
1. Login to Quicko,
2. Go to Taxpayers Dashboard,
3. Click on View Profile,
4. Go to Personal Information,
5. Click on Deactivate Tax Payer,
6. Type CONFIRM and Submit.
Note: Once you submit, you will loose data of your efiled ITR as well on Quicko. You can only access it through your account on Income Tax efiling site.