If you're desperate for a $10 note, you might be hard-pressed to withdraw one from an Aussie ATM. Considering how expensive it is to cart Australia's currency around the country and keep ATMs filled, it's not surprising that ATMs usually stick to two types of notes.

Aussie ATMs typically spit out a combination of $20 or $50 notes, but there is at least one bank that will allow you to withdraw a blue tongue, a blue swimmer, a blue grenadier or whatever you call a tenner. An ANZ spokesperson confirmed to Yahoo Finance that $10 and $100 notes are also available at 91 per cent of their ATMs in the country.

Some of you might be screaming "WELL DUH!" but this revelation appears to be major news every time someone discovers it.

RELATED

• Cashless society's horror impact for Australians: ‘Continuing to disappear’

• $2.1 trillion China warning as Australia's iron ore ice age intensifies: 'No save'

• ATO surprise as Aussie receives $198 ‘second tax refund’ in bank account: '$17.8 billion to be paid'

An Aussie bloke posted about the $10 note situation on TikTok this month and said he was "spewin" this wasn't around when he was a teenager.

Others were equally shocked that they could finally withdraw some small change.

"What since when... I remember back in my days it was only $20s," wrote one person.

"I've been wishing for $10's in the ATM since my poor student days," added another.

Do you have a story? Email stew.perrie@yahooinc.com

"I was so excited when I got a $10 note from the ATM...it’s the simple things," said a third.

"What a time to be alive," commented a fourth.

It appears ANZ is the only bank out of the Big Four that offers this, with Westpac, Commonwealth Bank and NAB confirming they only hand out the usual $20 and $50 notes.

Why do ATMs usually only have $20 and $50 notes?

There's no official reasoning given from the banking sector for the denominations available at ATMs, but it's likely the most efficient model when supplying cash machines around the country.

ATMs have a finite carrying capacity and $20 and $50 would be able to service the majority of needs for Aussies, as $10 and $100 requests would be much lower.

This is also in an era where cash use has plummeted over the years, and the country's biggest cash-in-transit company, Armaguard, which ensures ATMs remain full, has been struggling to stay afloat.

According to the Australian Banking Association (ABA), there were about 75 million cash withdrawals from ATMs back in 2008. Fast-forward to August this year and that number has plummeted to 29.2 million.