How to Accurately Calculate Your UIF Contributions?

I've recently started a new job and want to make sure I'm correctly calculating my UIF (Unemployment Insurance Fund) contributions. Could anyone provide a step-by-step guide on how to use a UIF calculator?

Specifically, I'm looking for details on what information I need to input, any common mistakes to avoid, and how to ensure the final amount is accurate. Any tips or insights from personal experience would be greatly appreciated!