Setting up a car wash loyalty program in Australia (2026)

Published 29 September 2026 · Updated 21 October 2026 · Reviewed quarterly

For a car wash, run a digital wash card in Apple or Google Wallet: one stamp per wash, and the 10th wash free after 9 paid ones. Drivers scan the QR where they pay to join, and scan it again each visit for a stamp. Nobody needs an app. On Rewardtree it's 60 days free.

The steps#

1. Put the QR where drivers pay. Print your free QR poster and put it at the pay point, with a sticker where drivers wait. Drivers scan it with their phone camera to join, and again each visit for their stamp.
2. Pay for 9, the 10th free. A driver pays for 9 washes and the 10th is free. It's the card drivers already know, and a weekly regular gets there in 9 weeks.
3. Keep the reward within reach. A reward that feels reachable keeps drivers coming. If most of your drivers come monthly, make it 5 or 6 paid washes.
4. Keep your address right. Every stamp is checked against where your wash is. A stamp from far away is still given but shows as "Needs a look" on your page. Set your opening hours and a stamp collected more than 30 minutes outside them doesn't count.
5. Look at your page now and then. Your page shows every stamp, and you can undo any of them. At a busy tunnel or an unattended bay, a quick look each week keeps the card honest.

Why car washes suit a stamp card#

Most drivers buy the same wash every time, and good regulars come back every week or every few weeks. Same price, regular visits: that's exactly what a stamp card is built for, and "9 washes, the 10th free" needs no explaining at the pay point.

The weak spot has always been the card itself. A cardboard card in the glovebox fades, tears, goes out with the parking tickets or sits in the other car. A digital wash card lives in Apple Wallet or Google Wallet, on the phone the driver already has in their hand when they pay.

It also gives you something cardboard never did: a list of your regulars, with their visits.

Where the QR goes at your kind of car wash#

On Rewardtree, the driver scans your QR with their own phone to collect a stamp, so nobody on your team needs a device. It suits:

• hand car washes and detailers who work from their own site,
• tunnel washes, with the QR at the pay booth or the vacuums,
• car wash cafés, where drivers pay at the counter,
• self-serve bays, with a sticker at the pay machine.

At an unattended bay nobody sees the scan, so look at your page now and then: each stamp is one per visit and checked against where your wash is, and anything odd (far away, or late at night) shows as "Needs a look". You can undo any stamp. If you sell an unlimited-wash membership, the stamp card is for the drivers who pay per wash.

Mobile detailing is the catch. Every stamp is checked against your shop's address, so stamps collected in a customer's driveway across town will show as "Needs a look". The card suits work done at your premises.

What does the free wash really cost you?#

Say your standard wash is A$25 on the board. In Australia that's the whole price the driver pays. With 9 paid washes for a free one:

"Costs you" is the water, chemicals, power and wages for one wash or one upgrade. Those are example figures, so put in your own. The point holds either way: a free wash is worth the full A$25 to the driver, but it costs you far less than A$25 to give. At board prices, "9 washes, the 10th free" is 10% off; at your cost, it's a few per cent.

Progress that shows: the car wash study#

One of the best-known studies of loyalty cards was done at a car wash. Drivers were given one of two cards for a free wash:

• a plain card needing 8 stamps, or
• a 10-stamp card with 2 stamps already on it.

Both needed 8 washes. 19% of drivers finished the plain card, and 34% finished the one that started with 2 stamps (Nunes and Drèze, Journal of Consumer Research, 2006). A card that already shows progress gets finished, even a longer one. On Rewardtree, the wash a driver joins on already counts as their first stamp.

Rewards that work for a car wash#

Pick one reward:

• 9 washes, the 10th free. The classic.
• A free upgrade to your next wash level after 5 washes. Worth a lot to the driver, and it costs you only the difference.
• A free interior clean after 6 washes. Good if your interiors are quick.

At the bay#

• Collecting. The driver scans your QR and collects today's stamp. The card on their phone updates straight away. Your staff type nothing.
• Bad signal. The driver uses their own phone's data, and your QR is paper, so your internet doesn't matter.
• Two cars, one driver. A visit is 4 hours by default, so a driver who brings in two cars on the same morning collects one stamp.
• Where your wash is. Every stamp is checked against where your wash is. A stamp from far away is still given, so nobody is embarrassed, but it shows as "Needs a look" on your page for you to check.
• Your opening hours. Set them and a stamp collected more than 30 minutes outside them doesn't count. A self-serve bay that's open all night can skip opening hours: a stamp collected late at night is then still given, but shows as "Needs a look".
• The free wash. When a card is full, the wash that filled it is paid as normal. On the next visit the driver's phone asks "Use it now?", and they show you a live screen with the reward, their first name and a moving clock. At an unattended bay, put a line on your sign saying where to show it.

The worked example: a car wash on Rewardtree in a few minutes#

1. Your car wash's name and mobile at rewardtree.com.au/signup. We text you a code to check it's your number.
2. Your reward, in one sentence. Pick Other, type 9 and "Free wash": "Customers pay for 9 visits. Their 10th visit gets a free wash."
3. Your address. Google address search finds it. More than one site? Add them right there.
4. Go live, and print your free QR poster. An A4 poster for the pay point, with a page of four stickers.

Then tell the next driver: "Scan this and your wash card goes in your phone's wallet."

The Australian rules, in plain words#

This is general information, not legal or tax advice.

• Board prices include GST. Businesses must show consumers one total price, taxes included (ACCC: Price displays, checked 29 September 2026), so the A$25 on your board is what the driver pays, and it's the right number for your reward maths. How a free wash is recorded for GST is a question for your accountant or BAS agent.
• Spam Act 2003. A message that markets to your drivers, like a wet-weather special, needs their consent, has to say it's from you, and needs an unsubscribe that works. An unsubscribe must be honoured within 5 working days (ACMA: Avoid sending spam, checked 29 September 2026). On Rewardtree, your car wash's page has its own "can text me offers" box, and it starts unticked. More in do I need permission to text or email my customers offers?
• Privacy Act 1988. Most small businesses, those with an annual turnover of A$3 million or less, aren't covered by the Privacy Act, but some are (OAIC: Small business, checked 29 September 2026). Either way, collect only what you need and tell people plainly who gets their details. Rewardtree's shop page asks for a first name and a mobile, never a number plate, and tells drivers that your car wash will see their first name, mobile and visits.

What it costs#

On Rewardtree it's 60 days free with no credit card, then A$9.99 a month per site, or A$99 a year. That's our end-of-year special for businesses that sign up by 31 December 2026: you keep it for every shop, including shops you add later, for as long as you stay. From 1 January 2027, businesses that sign up pay A$19.99 a month or A$199 a year. The details are on the pricing page, and the page for car washes has the short version.

For the plan any business can follow, read how to set up a loyalty program in Australia. We make Rewardtree, so weigh our advice with that in mind.

Questions, answered#

Run a car wash? See Rewardtree for car washes.