How to Check Tax on a Fortnightly Payslip in Australia (2025-26)
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Primary tax-year context: 2025-26
This article is general information only. We maintain pages using primary-source checks and date-based reviews. See editorial policy.
General information only. This is not tax or financial advice.
If you are comparing the PAYG amount on a fortnightly payslip against the ATO tax table, the first question is not “is payroll wrong?” but “am I checking the same inputs the payroll system used?”
That matters because a fortnightly payslip can differ from a quick table lookup for completely normal reasons.
Start with the right ATO reference
For ordinary fortnightly wages, the ATO publishes a dedicated fortnightly tax table and withholding schedules.
The employee version of the check is simpler:
- confirm the gross fortnightly earnings
- confirm whether the tax-free threshold is being claimed
- confirm whether HELP or another study loan should be withheld
- then compare the result against the expected PAYG amount
If you skip one of those inputs, the table comparison can look wrong even when payroll is fine.
Why your fortnightly payslip may differ from the quick table
A difference is often normal when:
- payroll software applies the official ATO rounding method
- your payslip includes allowances or irregular payments in that fortnight
- you have HELP, VSL, FS, SSL, or AASL withholding
- the tax-free threshold is not being claimed from that employer
- you are looking at net pay instead of gross fortnightly earnings
The ATO also notes that some years can have 27 fortnights instead of the usual 26, which can affect withholding expectations.
Fast fortnightly payslip checklist
Before you decide the tax is wrong, check:
- The gross fortnightly earnings amount, ignoring cents if required by the table.
- Whether the tax-free threshold is claimed on this job.
- Whether HELP or another study loan is switched on.
- Whether allowances, leave loading, or irregular amounts were included in this pay.
- Whether you are comparing against an employee reference estimate or the employer schedule.
When the difference is not normal
Take a closer look if:
- the tax-free threshold setting on the payslip does not match your TFN declaration
- the HELP withholding status is wrong
- the gap is much larger than simple rounding
- the pay includes a lump sum that should have used a different schedule
At that point, the right move is not guessing from a screenshot. Recalculate the fortnight with the same inputs payroll used.
Which tool to use next
Use the tools in this order:
- ATO fortnightly tax table page for a quick employee-side lookup
- PAYG Calculator if you need a more tailored withholding estimate
- HELP Repayment Calculator if the real issue is study-loan withholding rather than base PAYG
Sources
Next step
If your query is “is the tax on my fortnightly payslip right?”, start with the ATO fortnightly tax table page and match the payslip inputs one by one before assuming payroll made an error.