Dhana Yoga is a class defined by house lordship rather than by planetary pattern, and its logic is worth following because it is the clearest example of how jyotisha reasons from houses.
The houses the tradition counts as the wealth houses are the second, of accumulated resources and family holdings, and the eleventh, of gains and income. To these are added the fifth and the ninth, the trines, which are treated as the houses of merit and fortune. A combination between the lords of these houses is read as a wealth combination, and the strongest cases join a resource house to a trine, on the reasoning that income requires both a channel and a cause.
Two qualifications matter. The first is that the tradition consistently distinguishes wealth from status, and files them separately: Dhana Yoga and Raja Yoga are different classes with different house sets, and a chart may show one and not the other. The second is that the sixth, eighth and twelfth houses, the dusthanas, are treated as houses of loss, and a wealth lord tangled with them is held to be compromised.
This is a description of a divinatory method. The atlas records what the system holds and does not suggest that any chart configuration bears on anyone's finances.