Planets in houses · Dusthana
Shani in the 12th house
Saturn · Vyaya Bhava
Shani is the karaka (significator) of discipline, career, endurance and longevity. The 12th house, called Vyaya Bhava, shows expenses, foreign lands and moksha. When Shani sits here, these matters take on its colour.
In the 12th house a malefic can raise expenses, losses or sleep trouble, but also helps detachment and work abroad.
The 12th house is a dusthana (house of difficulty), so results here come through challenges and need conscious handling.
Shani gives its best results here when it is exalted in Tula, in its own sign (Makara and Kumbha) or in a friendly sign, and when it is not combust.
Results are weaker if Shani is debilitated in Mesha, combust, or afflicted by malefics.
In transit (gochar)
When Shani transits the 12th house counted from your Moon sign, the period traditionally needs more care.
A single placement is never read alone: sign, aspects, conjunctions, dasha and the whole chart change the outcome.