This plugin rounds off Woocommerce Cart Total to nearest 5 cents (or nearest 5 in the 2nd decimal for any currency).
For example, if the cart total after tax is 43.27, the plugin rounds it off to 43.25. Similarly if the cart total is 43.28, the plugin rounds it off to 43.30.
There is no additional setting required to be configured. Simply install the plugin and activiate it.