How NRE account is different from NRO account?

The most important difference between the two accounts is NRE account is fully repatriable means you can remit the account balance including the principal and interest in India and abroad while the NRO account has repatriation restrictions of maximum $1 million in any financial year, and the interest is fully repatriable. Other differences are NRE account is tax-free while there are no tax benefits on the NRO account.