PAYG withholding tables determine how much tax your employer deducts each pay cycle. They are designed to approximate your end-of-year tax bill so you don’t owe a large amount at tax time.
Tables vary by pay frequency: The ATO publishes weekly, fortnightly, monthly, quarterly, and annual tables.
Tax-free threshold impact: Tables differ depending on whether you claim the threshold or not. Withholding is significantly lower at your primary job.
HELP/HECS and other adjustments: Employers must add extra withholding when you declare a HELP debt on your TFN form.
Why this site doesn't use PAYG tables: The calculators here use simplified tax bracket maths to give an easy-to-understand estimate. PAYG withholding may differ slightly due to rounding and ATO-specific formulas.
Call to action: Use this site to estimate take-home pay, then compare with your payslip to understand PAYG withholding differences.