What the card shows
A hand out of a cloud holds a single coin, flat and level, as if presenting it rather than paying with it. Below is a walled garden with lilies, and a low arch in the wall with a path running out through it towards hills. The garden is cultivated, which no other ace shows.
The tradition reads it as something material and real being offered. The coin held flat is doing the work: nothing is being handed over yet, it is being shown. The archway is the other half. There is a way out of the enclosure and it is open, which is why the card is generally read as an offer that involves leaving something comfortable.
The lilies in the garden are the same flowers that turn up elsewhere in the deck for cultivation and care. They mark the enclosure as something that was made rather than found, which is why leaving it reads as a real cost.
Upright and reversed
Upright, the keywords are opportunity, resources and new work. It is the least abstract card among the aces. Where wands offer drive and swords offer a thought, pentacles offer something with substance, and the tradition is comfortable reading that quite literally as money, work, a place to live or a piece of practical help.
Reversed, the accepted readings are an opportunity that did not land and one that was not taken, along with a more general sense of insecurity. Those differ in where the responsibility sits, and the card does not settle it. Poor timing is not the same as a refusal, and looking at whether the spread shows movement outside the querent or hesitation within them is the usual way to tell.
Aces, and the suit of earth
An ace is one-ness in its suit: a beginning with nothing yet built on it. That is true across all four, and the suit supplies the material. In this case the material is earth, which the tradition assigns to bodies, money, work and everything that has to be maintained.
One-ness in earth is therefore a beginning you can touch. It is the slowest of the aces, because earth develops at the pace of actual things, and that slowness is a feature rather than a complaint. Read next to the Eight of Pentacles, the arc is visible. The ace is the offer of work, and the eight is the long stretch of doing it well enough to matter.
Earth is also the suit that keeps a record. What is started here tends to still be visible several cards later, which is not true of the faster suits.
The question it puts
No planet or sign attaches to this card. In the Golden Dawn correspondences the numbered minors from two upwards each take a decan of the zodiac, and the aces stand apart as the root of their element, so earth is the whole of it here.
The question it puts is plain enough to be awkward. If something real is being offered, what would you have to give up in order to take it, and is that the actual reason you have not. This site does not claim that a drawn card knows what is on the table. It claims the question is worth answering, and this one can be answered with a pen and ten minutes.
Questions people ask about this
Does the Ace of Pentacles mean money?
The tradition is comfortable reading it literally as money, work or practical help, since earth is the suit of material things. It describes an offer rather than a sum received, so the card stops short of any amount.
What does the Ace of Pentacles reversed mean?
An opportunity that did not land or one that was not taken, with insecurity underneath both. The difference is where the responsibility sits, and the card by itself does not settle that.
Why is the coin held flat?
It is being shown rather than handed over. Readers take that as the card describing an offer still open, which is also why the archway leading out of the garden is usually read alongside it.
Is this the luckiest card in the deck?
This site does not describe cards as lucky. What the tradition reads in it is a concrete opportunity, and the reading changes considerably depending on what the surrounding cards say about taking it.
Does it have an astrological ruler?
None. The aces are treated as the root of their element in the Golden Dawn scheme rather than being assigned decans, so this card carries earth alone.
Can I draw the Ace of Pentacles here?
Yes. All the spreads on the site shuffle the full deck in the page, reversals included unless you turn them off, and each reading rebuilds from its own link.