Which bullion coins are tax free?

These investment coins are classified as Investment Precious Metals (IPM) and are GST exempt:

GOLD

1. American Buffalo
2. Australia Kangaroo Nugget
3. Australia Lunar
4. Australia RAM Kangaroo coin
5. Austria Philharmonic
6. Canada Maple Leaf
7. Canada Call of the Wild 4-coin series
8. Chinese Panda
9. Malaysia Kijang Emas
10. Mexico Libertad
11. Singapore Lion
12. United Kingdom Britannia
13. United Kingdom Lunar
14. United Kingdom The Queen's Beasts 10-coin series
15. United Kingdom Royal Arms

SILVER

1. American Eagle
2. Armenia Noah's Ark
3. Australia Funnel‑Web Spider
4. Australia Kangaroo
5. Australia Kookaburra
6. Australia Koala
7. Australia Lunar
8. Australia Saltwater Crocodile 
9. Austria Philharmonic
10. Canada Birds of Prey series 
11. Canada Maple Leaf
12. Canada Superman^TM S‑Shield
13. Canada Tree of Life 
14. Canada Wildlife series
15. Chinese Panda
16. Mexico Libertad
17. United Kingdom Britannia
18. United Kingdom Lunar
19. United Kingdom The Queen's Beasts 10-coin series

PLATINUM

1. American Eagle
2. Australia Koala
3. Australia Platypus
4. Austria Philharmonic
5. Canada Maple Leaf
6. United Kingdom Britannia
7. United Kingdom Lunar
8. United Kingdom The Queen’s Beasts series