Cheapest 1kg Silver Bars in Australia: Live Price Comparison

1kg Silver Bar: The Best Value Entry Point for Silver

The 1 kilogram (32.15 troy oz) silver bar is the most popular size for silver investors in Australia. At current silver prices of around $3,500–$4,500 AUD per kilogram, it represents a meaningful investment at a manageable entry cost.

Silver bars carry lower premiums per ounce than silver coins of the same total weight. If your goal is to maximise metal content per dollar, a 1kg cast bar is almost always the most cost-effective option available.

Investment-grade silver bars are GST-free, so there is no GST component in the bar prices above.

Good to Know: Investment Silver Is GST-Free in Australia

Investment-grade silver (99.9% pure or better) is GST-free in Australia, just like investment gold. Under the GST Act, retail sales of silver bars in an investment form are input taxed, which means no GST is charged. Standard 1kg cast and minted bars from recognised refiners qualify.

The premium shown against spot in our table is therefore the real premium, with no hidden tax component to add. When calculating your expected return, focus on the premium you pay and the buyback spread when you sell. There is no GST on the sale either.

GST does apply to collectable, proof and numismatic pieces, to lower-purity silver, and usually to delivery and insurance charges. Our GST on silver guide explains the rules in full.

Cast vs Minted: Which 1kg Silver Bar Should You Buy?

At 1kg, the premium difference between cast and minted bars is significant and worth understanding.

Cast silver bars (ABC Bullion cast, Ainslie cast, Perth Mint cast) are manufactured by pouring molten silver into moulds. The finish is rough and industrial. The advantage is cost: cast bars carry the lowest premiums of any silver product. If you are accumulating silver for value, cast is almost always the right choice.

Minted silver bars (Perth Mint minted, PAMP Suisse) are machine-struck, polished, and often packaged in sealed assay cards with certificates. They look impressive and hold slightly better private resale value. The premium is typically 5–15% higher than cast equivalent. For most value-focused buyers, the lower premium on cast bars more than compensates for the less polished appearance.

Is 1kg the Right Size for You?

The 1kg bar is the most popular choice, but it is not the only option. Consider:

100oz bars (~3.1kg, ~$11,000+): The lowest premiums available on silver, but require significant capital and are less liquid for small transactions. Primarily for serious stackers.

10oz bars (~$1,200–$1,500): Higher premium per ounce than 1kg, but lower entry cost. Good for buyers building up gradually.

1oz coins (Kangaroo, Kookaburra): The highest premium per ounce, but maximum liquidity. Easy to sell one at a time, popular for gifting, and well recognised privately.

For most investors buying silver primarily for value and holding long-term, the 1kg cast bar is the clear winner on cost. If liquidity and flexibility matter more, a mix of 1kg bars and some 1oz coins is a common approach.