Planetary attribution
The tarot cards of Mercury
Speech, exchange, skill and the trickster who moves between.
Mercury takes The Magician, which is the most straightforward attribution in the deck: the messenger god, the figure with all four tools on the table, the one who is persuasive by trade. The earliest versions of the card were a street conjurer, and Mercury is the patron of that too.
In the pips Mercury lands on cards about transmission: news arriving, celebration shared, a crossing made, work exchanged for money. It is the busiest personal planet and its cards move.
6 cards
The trump first, then the numbered cards that carry the same attribution.
The other planets
Where these attributions come from
The Hermetic Order of the Golden Dawn, in the late nineteenth century. They mapped the whole deck onto the zodiac, the planets and the Hebrew alphabet, and the Rider-Waite-Smith deck was built on that system, which is why most modern decks still inherit it.
It is a system rather than a discovery. The fifteenth century Italian decks had no astrological scheme at all, and other traditions map the cards differently. Every attribution on this site is the Golden Dawn one, and where a card is disputed its own page says so.
Mercury in an actual chart
This page is about what the tarot tradition attaches to Mercury. The astrology itself, calculated from real ephemeris data rather than described, is on our sister site.
Mercury on Memento Astra