My employer didn't withhold enough tax — whose problem is that?

General advice only · AFSL 222640 · Global Mutual Funds Pty Ltd

The direct answer

Ultimately it is yours: you are liable for the tax on your assessment, even if too little was withheld during the year. The most common cause is claiming the tax-free threshold with two employers at once. If your employer made a withholding error, the ATO can pursue them separately, but that does not remove your debt. Payment plans are available.

What it depends on

The full answer depends on your specific circumstances. Here’s what matters.

Why it happened

Multiple jobs, salary sacrifice changes, bonuses, HELP/study loan repayments not being withheld, or incorrect tax file number declarations are common causes.

Your ability to pay

The ATO offers payment plans. Engaging early usually leads to better outcomes than ignoring a debt.

Preventing it next year

You can update your TFN declaration, ask your employer to withhold extra, or make voluntary payments during the year.

The last 10%

What a qualified professional can add

The answer above covers the general position. Here’s where professional judgement — applied to YOUR specific situation — makes the difference.

Identifying why the shortfall happened and fixing withholding settings
Arranging a payment plan with the ATO
Checking your assessment for missed deductions or offsets

Questions to ask before you engage one

If you decide to engage a professional, these questions help you evaluate whether they’re right for your situation.

Why was not enough tax withheld this year?

Should I ask my employer to withhold extra from now on?

Can I get a payment plan, and will interest apply?

Did I miss any deductions that would reduce the bill?

Your next step

Check your TFN declarations with every employer you work for. If you claim the tax-free threshold more than once, fix it now to prevent a repeat.

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