The SJC gold premium: the number actually worth watching
How much SJC gold costs above the converted world price, how the premium per tael is calculated, why the gap exists, and what it tells a buyer.
Published 10 September 2026
Gold price boards are everywhere. What is rarely shown is the gap between the domestic price and the world price, and that is the number telling you how much extra you pay for a tael of gold.
The conversion
World gold is quoted in US dollars per troy ounce. Vietnam sells by the tael. One tael is 37.5 grams, or 1.20565 troy ounces. So:
World price converted (₫/tael) = XAU (USD/oz) × 1.20565 × USD/VND rate
Subtract that from the SJC selling price and you have the premium in dong; divide by the converted world price and you have it in percent. The gold page shows both, updated hourly, with a history chart.
Why the gap exists
SJC bars are the national gold-bar brand, with tightly limited supply against very strong household demand for stored value. Add costs, taxes and dealer margin, and the domestic price detaches from the world price, holding a gap of millions of dong per tael for long stretches.
Plain gold rings usually track the world price more closely than bars, since they carry no bar branding and supply is more flexible. Comparing the two is the fastest way to see what the brand itself costs you.
How to read the premium
There is no magic threshold, but a few markers help:
- Below 3% — rare; domestic gold moves almost in step with the world.
- 3–6% — a moderate gap.
- Above 6% — the usual range for SJC bars in recent years.
- Above 10% — very high; the buyer is paying largely for scarcity rather than metal.
What matters is not a single reading but the trend: whether the gap is widening or narrowing. It widens when world prices fall while domestic prices hold, and narrows when the world rises faster than Vietnam.
The second spread
There is a closer gap too: between the buy and sell price at the same shop. That is what you lose immediately if you buy and sell back the same day. For bars it typically runs to several million dong per tael, and it widens when the market turns volatile.
Figures come from the PNJ and Bảo Tín Minh Châu boards, for reference only and not investment advice.
