Ekadhipatya Shodhana is done after writing the numbers for rasis arrived at by trikona Shodhana. Ekadhipatya Shodhana is done if both the two rasis owned by a planet have gained a number after trikona Shodhana. Ekadhipatya Shodhana is not to be done if one rasi has got a number and the other is bereft of any number. The following are the rules for Ekadhipatya Shodhana: (1) If both the rasis are without a planet and the trikona Shodhana numbers are different (one is more than other), both should be given the smaller number. (2) If both the rasis are with planets, no Shodhana is to be done. (3) If amongst the two rasis, one is with a planet and a smaller trikona rectified number and the other is without planet with a bigger number, deduct the smaller number from the bigger number, and the number of the rasi with planet should be kept unchanged. (4) If the rasi with the planet has a bigger number than that of the rasi without planet, the Shodhana should be done of the number of the rasi without planet and the number of the rasi with planet should be kept unchanged. (5) If both the rasis are without planets and possess the same numbers, shodhana of both the numbers should be done and the rectified numbers should be reduced to zero. (6) If one rasi is with planet and the other is without any planet, the number of the latter should be reduced to zero. The Sun and the Moon own one rasi only (Leo and Cancer), their numbers should be kept unchanged.

ऊनेन सममन्यस्मिन्‌ शोधयेद्‌ ग्रहवर्जिते । फलाधिके ग्रहैर्युक्ते चान्यस्मिन्‌ सर्वमुत्सृजेत्‌ । । 4 । । (5) यदि ग्रह युक्त एक राशि की त्रिकोण शुद्ध रेखाएं अधिक हों तो ग्रह रहित के नीचे 0 तथा ग्रह युक्त के नीचे कोई परिवर्तन न करके पूर्व प्राप्त रेखा ही रख ।