So, you’ve opened a savings account for your little one. Maybe it started with a $50 gift from Nan, a sprinkle of birthday cash, and a vague plan to “save it for their future.” Fast-forward a few years and the balance is looking surprisingly healthy, then someone at a barbecue mutters the words: “You know the ATO taxes that, right?”

Cue mild panic and a frantic Google search. Don’t worry – we’ve got you.

Tax on kids savings is one of those topics that sounds simple but has more layers than a pavlova. The good news is most parents can keep their child’s savings tax-free with a bit of planning. The not-so-good news? Get it wrong and the Australian Taxation Office can take up to 66% of the interest. Yes, you read that right.

Whose Money Is It, Really?

This is the single most important question when it comes to tax on kids savings. The ATO doesn’t actually care whose name is on the account. They care about who controls the money and where it came from.

According to the ATO’s children’s savings account rules, if you (the parent) deposit money into your child’s account, dip into it whenever the school excursion form lands, or use it to cover the family Bunnings run, then the ATO considers that interest your income, not your child’s. You’ll need to declare it on your tax return.

On the flip side, if the money genuinely belongs to your child – say, birthday cash from grandparents, pocket money they earned mowing lawns, or wages from their first job at the local cafe – and they actually control it, then the interest is theirs and assessed under the (much friendlier) rules for kids.

A simple test: if you’d happily raid the account to pay for a weekend away, it’s probably your money in the eyes of the ATO.

Tax Rules on Kids Savings: The Basics

Here’s where it gets a bit spicy. Australia has special rules to stop adults shuffling investments into their kids’ names just to dodge tax. These rules apply to what’s called “unearned income”, money your child didn’t actively earn, like bank interest, dividends, or distributions from a family trust.

For minors (anyone under 18 at 30 June), the tax rates on unearned income look like this:

Once your child’s unearned income tips over $1,307 in a year, the ATO taxes the whole lot at 45%. This is deliberately punishing. It’s designed to discourage parents from parking their investments in their child’s name. Mission accomplished, ATO.

Tax on kids savings – the silver lining

If the account is genuinely your child’s, and the interest stays under $416, there’s no tax to pay. Most family savings accounts will sit comfortably under this threshold for years.

The TFN Trap (Or: Why Babies Need Tax File Numbers Too)

Here’s a fun fact that surprises most parents: there’s no minimum age to apply for a Tax File Number. Newborns can have one. Toddlers can have one.

Why does this matter? Because if your child’s savings account doesn’t have a TFN attached, banks are legally required to withhold tax from any interest earned, at a brutal rate of 47%. That’s nearly half the interest, gone, before you even see it.

There are a few thresholds where withholding kicks in:

• Under any age earning less than $120 per year in interest → no tax withheld.
• Under 16, earning $120–$420 → no withholding if a TFN or date of birth is on file.
• Under 16, earning more than $420 → tax is withheld unless income is properly declared.
• No TFN provided? Bye-bye 47%.

Yes, you can claim that withheld tax back by lodging a tax return on your child’s behalf. But honestly, it’s far easier to just quote the TFN upfront and avoid the paperwork rodeo.

Smart Strategies to Keep Tax on Kids Savings to a Minimum

Now for the bit you actually came here for: how to legally and sensibly keep more of your child’s savings working for them, not for the Treasury.

1. Match the kids savings account to the actual saver

If the money is genuinely your child’s (gift money, part-time wages, etc.), set up the account in their name with their TFN. Keep records of where the deposits came from. If the ATO ever asks, you’ll want to be able to point to Aunty Sharon’s birthday card.

2. Keep the balance modest

If you’re parking your savings in your child’s name and treating it like a parent account in disguise, you’re playing with fire. Either declare the interest as your own or consider better-suited structures.

3. Look at investment bonds or education funds

For larger amounts (say, you’ve inherited money and want to put it aside for school fees), investment bonds can be incredibly tax-effective. Earnings are taxed inside the bond at the company rate, and after 10 years, withdrawals can be completely tax-free. Worth a chat with an adviser to see if it suits your situation. Our team at HPartners covers this kind of thing under our investment planning service.

4. Consider saving in your own name

Counterintuitive? Maybe. But if you’re not earning a huge income, paying tax at your own marginal rate may still beat the 66% minor penalty rate. Sometimes the most “tax-savvy” account is a boring grown-up one.

5. Use a family trust — carefully

Family trusts can distribute income tax-effectively, but the same penalty rates for minors apply to trust distributions. They’re not a magic bullet, and they need professional setup. The HPartners estate planning team can help you weigh up whether a trust structure makes sense for your family.

Common Mistakes Parents Make (And How to Dodge Them)

We see these all the time. Don’t be these people:

• Treating the kids’ account as a parent slush fund. If you’re dipping in for everyday expenses, that interest is yours to declare. Be honest.
• Forgetting to lodge the TFN. This is the single easiest way to lose nearly half the interest. It’s a five-minute fix.
• Not keeping records of where money came from. If grandparents have gifted significant amounts, jot it down. Future-you will thank you.
• Assuming “they’re a kid, the ATO doesn’t care.” They do. The ATO data-matches with banks. They notice.
• Setting and forgetting. Your child’s savings strategy at age 3 shouldn’t be the same as at age 16. Review it regularly, especially once they start earning their own income.

When in Doubt, Get Advice

Tax on kids savings is one of those topics where the rules are clear on paper but messy in real life. Mixed deposits, joint accounts, gifts from generous grandparents, share portfolios in trust, every family looks a little different.

If you’re not sure whether you’re declaring things correctly, or you’re planning to put away a serious lump sum for your child’s future, it’s worth having a chat with someone who deals with this every day.

At HPartners, we work with families across Brisbane and Toowoomba to build smart, tax-effective plans for the next generation, whether that’s school fees, a first home deposit, or just teaching the kids the magic of compound interest. We also handle the tax planning side of things, so you’re not stuck juggling advisers.

Ready to Make Your Kid’s Savings Work Smarter?

If you’d like a hand sorting out tax on kids savings, or building a long-term plan for your family’s wealth, we’re here to help. No judgement, just clear advice from people who genuinely enjoy this stuff.

👉 Book a no-pressure chat with the HPartners team today and let’s make sure your kids’ savings stay in their pocket – not the taxman’s.