Earnd doesn't affect the amount of money you earn or your overall income level.
The option to withdraw money through Earnd simply reduces the need to rely on a particular payday. You can access a portion of your earned after-tax income before the end of a given pay cycle.
You’ll notice that all withdrawals are then deducted from your regular paycheque at the end of the pay cycle and will be coded on your payslip as ‘Earnd’. Your balance will then reset to £0 and as you continue to work throughout the new pay cycle, your Earnd balance will accrue once again.