Cheapest Supermarket in Australia: Aldi vs Coles vs Woolworths

🛒 Which is actually cheapest?🔗

🎯 The essential: Aldi wins on price for staples and home-brand products. Coles and Woolworths sit close to each other and win on range, specials and delivery. IGA is usually the priciest.

If you are buying mostly pantry staples and home-brand products, Aldi wins by a clear margin. If you need branded items, a wide range of fresh produce, or online delivery, the picture gets more complicated.

Coles and Woolworths are remarkably close to each other. CHOICE's December 2024 survey found just a $1.79 difference between the two on a no-specials basket. That is noise, not a meaningful gap. IGA consistently lands as the most expensive option for a standard weekly shop, though it often fills an important role in regional or rural areas where the bigger chains simply are not available.

The variables that decide which is cheapest for you are your location, your household size, whether you buy branded or home-brand products, and how much time you are willing to spend shopping around.

⚖️ A head-to-head price comparison🔗

Here is how the main supermarkets stack up on a typical weekly basket, based on CHOICE's 2024 to 2025 surveys. All figures are approximate and in AUD, and prices vary by location.

The ACCC's 2024 to 2025 supermarket inquiry recommended stronger pricing transparency, including clearer disclosure of promotions, and noted that the sector's high concentration can reduce competitive pressure on price. It stopped short of finding price gouging, but the recommendations were pointed.

🥦 Winner by category🔗

Fresh produce: Aldi is often cheapest for everyday fruit and veg. Coles and Woolworths fight back with variety and frequent half-price specials on seasonal items, so check the catalogues.

Meat: Aldi's home-brand range is very competitive. The big two offer more variety, premium cuts and loyalty discounts that can close the gap.

Pantry staples: this is Aldi's strongest category. A 500g bag of pasta sits around 89c to 99c at Aldi, versus $1.50 to $2.00 for branded pasta at the big two on a non-sale week. For rice, canned tomatoes and oil, Aldi's home brand is among the cheapest in the country.

Household and personal care: Aldi's Special Buys can be exceptional value, though stock is limited. For bulk cleaning products, Costco wins on a per-unit basis.

🔍 Why Aldi is usually cheapest🔗

Aldi's model is built around ruthless efficiency: around 1,800 products versus 30,000-plus at Coles and Woolworths, almost entirely own-label, a no-frills store layout, no loyalty program to fund, and a lean supply chain. Fewer products means simpler logistics and more buying power per line.

💡 Save at Coles and Woolworths too🔗

No Aldi nearby, or you just want the variety? These moves genuinely work:

• Use unit pricing. Every major supermarket must show the price per 100g or 100ml by law. A smaller ticket price is not always the cheaper option per unit.
• Shop the half-price cycle. Coles and Woolworths rotate branded items to 50% off roughly every 6 to 8 weeks. Stock up on your staples when they hit that price.
• Buy home brands. Coles brand and Woolworths Essentials are typically 20 to 40% cheaper than name brands for comparable quality on most pantry lines.
• Use loyalty programs smartly. Flybuys and Everyday Rewards offer genuine discounts, but do not let points-chasing push you to overspend.
• Run a hybrid shop. Buy staples at Aldi, then pick up specials and branded items at Coles or Woolworths. CHOICE's data shows this consistently delivers the lowest overall basket cost.

For a deeper dive on trimming the weekly food bill, see our guide on how to save money on groceries.

🏁 The verdict🔗

Aldi is the default for everyday staples if you have one nearby. Coles or Woolworths are best for variety, branded items, specials and delivery, so use them alongside Aldi rather than instead of it. Costco makes sense for bulk household goods if you have a membership. IGA is often the only option regionally, where convenience and access matter more than price. For most Australians with the choice, the hybrid approach is the smartest play.

❓ Frequently asked questions🔗