Here is the short version: when you read that a team is "over the cap," it usually does not mean what it sounds like. It rarely means the team has no money. A lot of the time it means a placeholder charge is sitting on their books for a player they have not even re-signed yet.
That gap, between what a team actually pays and what counts against the cap, is where most of the confusion in NBA free agency lives. So let's clear it up once.
Two numbers, not one
There are two different measures, and people mash them into one all the time.
Payroll is the money actually on the books. Real contracts, plus dead money still owed to players who are gone. This is what a team is really spending, and it is what drives the tax and apron lines that decide what moves they can make.
Cap room is how much space a team has left under the salary cap to add players. Here is the part people miss: it is the cap minus everything that counts against it, and cap holds count. A cap hold is a placeholder charge for a team's own free agent, a number the league parks on your books so you cannot use a player's "leaving" to magically open up space before you decide whether to keep him. It is not money paid to anyone. It is a bookmark. But it still counts against the cap, so it eats into your room.
So the two pull apart fast. Payroll is cash out the door, the salaries a team is really paying. Cap room is what is left under the cap once you count those salaries and the holds. A team can sit under the cap on payroll and still have zero room, because a big hold swallowed it.
The team that is "over the cap" and also has money
Picture a team carrying a big hold on a star free agent. On real payroll they might sit well under the salary cap, with plenty of room to spend. But once that large hold is counted against the cap too, their total commitments cross the line and their cap room goes negative. On paper: "over the cap." In reality: under the cap on everything they are actually paying.
This is not a hypothetical. Look at a team like Dallas in a given offseason. Their committed payroll can sit comfortably under the projected cap, yet a single oversized hold on one of their own free agents can swing their cap room into the red. Headline reads "capped out." The truth is closer to "has room, but would have to make a choice first."
You can see the live version of this on any team page: the committed payroll, the cap line, and the holds, broken out so the difference is obvious instead of buried.
So why does the hold matter at all?
Because to actually use that room, the team has to clear the hold, and clearing it means renouncing the player. Renounce him and you give up the extra money and years your Bird rights let you offer to keep him. So the hold is not fake. It represents a real fork in the road: keep the player and the room stays locked, or let him walk and free the space.
That is the honest framing. Lead with the intuitive picture, committed payroll against the cap and the room to spend. Then explain the hold as the reason the usable space is smaller, because they would have to renounce someone to get to it.
The takeaway
Next time you see "Team X is over the cap," ask one question: over the cap on real payroll, or over the cap because of a hold on their own free agent? The two tell completely different stories. One says broke. The other says "they have a decision to make."
That difference is the whole game in the summer. Now you can see it.