Sun in the 8th house (Randhra / Ayus, the house of transformation) brings the significations of Sun, namely soul (atma), father, authority & government, 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 Sun in the 8th House
Sun is a malefic planet, so here it tends to bring low confidence, ego conflicts, trouble with father or bosses, and weak vitality 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 Sun occupies here and the aspects it receives.
When It Activates
These results typically surface during the Vimshottari mahadasha or antardasha of Sun, and when transiting planets trigger the 8th house. A well-placed Sun 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.