If you work in tech in Australia and get Restricted Stock Units (RSUs), you could face a huge, unexpected tax bill. This often happens because of how the Australian tax system handles these shares. Many people only learn the costly details when it is too late. This guide explains exactly what happens when your RSUs vest and how to plan for the tax bill.
How RSU vesting works in Australia
When your RSUs vest, your employer gives you shares. This is a key part of your pay package. However, the Australian tax process for this event is very different from your regular salary.
In Australia, your employer does not handle the tax on your vested RSUs. They do not take money from your pay. They do not automatically sell some shares to cover the tax. The shares simply arrive in your account. You are then fully responsible for the tax bill that comes with them.
The tax problem no one tells you about
The main issue is how the Australian Taxation Office (ATO) views your vested shares. The ATO treats the market value of your vested RSUs as extra income.
This extra income is added to your salary for the whole financial year.
For example, imagine your salary is $350,000. Then, you get $200,000 worth of RSUs that vest. The ATO sees your total income for the year as $550,000. Your tax is calculated on that full amount.
Because your employer withholds no tax, you owe all of it yourself. Using the example above, here is how the maths works:
| Your Salary | Vested RSU Value | Total Assessable Income |
|---|---|---|
| $350,000 | $200,000 | $550,000 |
At an income of $550,000, you hit the top marginal tax rate. This rate is 45%, plus a 2% Medicare levy. So, your total marginal rate is 47%.
Your tax bill on the $200,000 vest would be $94,000.
You must find this money to pay the ATO.
Why this catches people off guard
Many tech workers are shocked by this large bill for two key reasons.
First, they see the shares arrive in their brokerage account. This feels like money in the bank. It is easy to spend it, reinvest it, or use it for other goals like paying down a mortgage. People often forget that almost half of that value belongs to the tax office.
Second, most people do not get a warning. Only some taxpayers get PAYG (Pay As You Go) instalment notices from the ATO. These notices require quarterly tax payments. They act as a reminder of a coming tax debt.
Most people do not get these notices. They find out the problem when they do their tax return. Their accountant tells them they owe tens of thousands of dollars. By then, the money from the vested shares is often gone.
Understanding your tax liability
It is crucial to know how much tax you will owe. You must plan for this bill from the day your RSUs are granted, not when they vest.
The tax is based on the market value of the shares on the day they vest. It does not matter if the share price goes up or down later. Your taxable income is locked in on the vesting date.
Your total tax rate depends on your marginal tax rate. This is the rate you pay on your last dollar of income. Adding RSUs can push you into a much higher tax bracket.
Here are the resident tax rates for 2026–27, according to the ATO. They don’t include the 2% Medicare levy:
- Up to $18,200: 0% tax
- $18,201 to $45,000: 15% tax
- $45,001 to $135,000: 30% tax
- $135,001 to $190,000: 37% tax
- Over $190,000: 45% tax (47% including the 2% Medicare levy)
If your salary and RSUs push your total income over $190,000, you will pay 47 cents in tax for every dollar of value from the shares that vest above that threshold.
How to manage your RSU tax bill
You need a strategy to avoid a financial crisis at tax time. Do not wait until you get a bill.
Set aside money for tax immediately
When your shares vest, act as if almost half of their value is not yours. For high-income earners, you should set aside 47% of the vested value in a separate savings account. Treat this money as already spent. This ensures you have the cash ready when your tax is due.
Consider selling shares to cover tax
The most common method is to sell enough shares at the time of vest to cover the tax bill. This is called a “sell to cover” strategy. Even though your employer does not do it automatically, you can do it yourself.
Selling shares right away allows you to:
- Lock in the cash needed for the tax payment.
- Avoid taking money from your other savings or salary.
- Remove the risk that the share price will fall before you sell.
Plan for quarterly PAYG payments
If you expect a large tax bill, the ATO may issue you PAYG instalment notices. These mean you pay your estimated tax in quarterly chunks during the year. This can help you budget and avoid one massive payment.
If you do not get these notices but know you will owe a lot, you can make voluntary quarterly payments. This spreads the cost and helps you avoid interest charges.
The big mistake: spending the vesting money
The biggest error is spending the entire value of your vested RSUs. People often use the money for large purchases or investments. They forget about the looming tax liability.
When the tax bill arrives, they have to find the money from other sources. This might mean taking money out of investments at a bad time. It could mean using savings meant for other goals. Or, it could mean going into debt to pay the ATO.
Always account for tax first. The money you have after tax is your real gain.
Conclusion: take control of your RSU tax
RSUs are a great part of your compensation. But in Australia, they come with a major tax responsibility that your employer does not manage for you. The key is to understand the rules early and plan for them.
Remember these points:
- The full value of your vested RSUs is added to your taxable income.
- Your employer does not withhold tax on this income.
- You could owe almost half of the vested value in tax.
- You must plan for this bill yourself.
Do not be caught by surprise. When your RSUs vest, your first thought should be about tax. Set the money aside or sell shares to cover it. Talk to a qualified accountant who understands employee share schemes. With the right plan, you can enjoy the benefits of your RSUs without the stress of a hidden tax shock.
Take action now. Review your upcoming RSU vesting schedule. Calculate the potential tax. Make a plan to have the funds ready. This is the only way to protect your financial health and make the most of your hard-earned equity.
My free RSU Playbook walks through the full plan. Or watch 3 ways to fund your RSU tax bill.
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