Your 2023 tax return refund is due to Tax payable at regular tax rates 1. PAYG withholding by your employer being slightly more than needed based on your salary 2. Plus your Deductions at your Marginal Tax Rate (34.5% between 45k-120k) 3. Less Other Income at your Marginal Tax Rate (34.5% between 45k-120k). Other Payables 1. Medicare Levy / Medicare Levy Surcharge / HELP/HECS Debt Repayment, etc. Other Credits 1. Tax Offsets (some are calculated automatically based on your income), or based on how we input your tax return. 2. Dividend Franking Credits While our software estimates the tax refund/payable - only once the tax return is submitted to the ATO do they do their calculations and checks and (when finished) send the Notice Of Assessment.