Hello there, HeadAngel.
It's possible the rate entered is not 4%. Let's go ahead and check the set up. Here's how:
- Click the Gear icon.
- Choose Account and Settings.
- Go to the Payroll tab.
- Click the Pencil icon in the Pension scheme row.
- Make sure the Employee contribution percentage is 4%.
I've got a screenshot as your reference.
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If you have more questions, please let us know. We'll check your post from time to time.