Ketu in the 8th house (Randhra / Ayus, the house of transformation) brings the significations of Ketu, namely spirituality & moksha, detachment, past-life karma, into the area of longevity, transformation, the occult and sudden change. The 8th house governs longevity & death, transformation & crisis, occult & mysteries, inheritance & joint finances.
Results of Ketu in the 8th House
Ketu is a malefic planet, so here it tends to bring confusion, sudden losses, feeling lost, and unexplained anxieties focused on longevity, transformation, the occult and sudden change. As the 8th is a dusthana (difficult) house, results may come through struggle before growth.The exact result depends on which sign Ketu occupies here and the aspects it receives.
When It Activates
These results typically surface during the Vimshottari mahadasha or antardasha of Ketu, and when transiting planets trigger the 8th house. A well-placed Ketu here supports resilience, occult insight, inheritance and the power to be reborn through crisis; when afflicted it can indicate chronic obstacles, sudden upheavals, and anxieties about loss.