Key Houses and Planets in Understanding Relationships with In-Laws:

1. 8th House (House of In-laws and Transformation):
   • The 8th house directly governs relationships with in-laws, especially after marriage. It represents the spouse’s family, joint assets, and the transformation brought by marriage.
   • If benefic planets (like Jupiter, Venus, or Mercury) influence the 8th house, it generally indicates good relations with in-laws, support from the spouse’s family, and harmony.
   • Malefic planets (like Saturn, Rahu, or Mars) in the 8th house or aspecting it can create challenges, tension, or misunderstandings with in-laws.
2. 4th House (House of Domestic Peace and Family Comfort):
   • The 4th house represents your home environment, domestic peace, and how comfortable you feel within the family, including in-laws.
   • A well-placed 4th house lord or benefic aspects here can indicate a peaceful and supportive relationship with in-laws, especially if you live with them.
   • Afflictions to the 4th house can cause domestic discord and lead to strained relationships with in-laws.
3. 7th House (House of Marriage and Spouse):
   • The 7th house governs marriage, spouse, and partnerships. A harmonious 7th house and its lord contribute to overall marital harmony, which often extends to relationships with in-laws.
   • A troubled 7th house can create disharmony in marriage, which can lead to strained relationships with the spouse’s family.
4. Venus:
   • Venus is the planet of love, harmony, and relationships. A strong Venus promotes smooth, pleasant interactions and ensures cordial relations with in-laws.
   • If Venus is afflicted by malefic planets or placed in difficult houses (like the 6th, 8th, or 12th), it can indicate difficulties or challenges in maintaining harmony in relationships, including with in-laws.
5. Jupiter:
   • Jupiter represents wisdom, guidance, and blessings. It is especially important for women, as it represents the husband and marriage in general.
   • A well-placed Jupiter ensures support and blessings from elders, including in-laws. It brings goodwill and wisdom into relationships, promoting understanding and mutual respect.
6. Malefic Influences:
   • Saturn: Saturn’s presence in or aspecting the 8th house or 7th house can lead to a more distant or strained relationship with in-laws. However, Saturn also promotes responsibility and duty, so it can be neutral or positive depending on its dignity.
   • Rahu and Ketu: Rahu in the 8th house can bring unconventional or unpredictable relationships with in-laws, while Ketu can cause detachment or distance.
   • Mars: Mars in the 8th house may bring aggression or conflict with in-laws, especially in matters related to joint assets or control.

Remedies for Improving Relationship with In-Laws:

If there are challenges with in-laws as indicated by the birth chart, the following remedies can help improve the relationship:

1. Strengthening the 8th House:
   • Recite mantras or perform remedies for the lord of the 8th house to ensure harmony in relationships with in-laws. For example, if the 8th house lord is Mars, reciting the Mangal Mantra (Om Kujaaya Namaha) can help ease tensions.
2. Venus Remedies:
   • Strengthening Venus can enhance harmony and love in relationships. Chanting the Shukra Mantra (Om Shukraya Namaha) on Fridays or wearing white can help promote peace and balance in relationships, especially with in-laws.
3. Jupiter Remedies:
   • For women, strengthening Jupiter (which represents the husband and the broader family) can help improve relationships with the spouse’s family. Reciting the Guru Mantra (Om Brihaspataye Namaha) or offering yellow items on Thursdays can strengthen Jupiter’s positive influence.
4. Offer Prayers to Family Deities:
   • Praying to the family deities (Kuldevata) of both your own family and your spouse’s family helps maintain harmony within the larger family, including with in-laws.
5. Saturn Remedies:
   • If Saturn is causing difficulties with in-laws, especially due to distance or coldness, performing remedies like donating black clothes or food on Saturdays can help reduce Saturn’s negative effects.
6. Rahu-Ketu Remedies:
   • Rahu or Ketu in the 8th house may cause unpredictable or strange relationships with in-laws. Offering food to the needy on Saturdays or chanting the Rahu Mantra (Om Raahave Namaha) and Ketu Mantra (Om Ketave Namaha) can help mitigate these effects.
7. Fasting and Charity:
   • Fasting on specific days associated with the planets ruling the 8th house or performing charity for the less fortunate can help improve relationships with in-laws.
8. Open Communication and Compassion:
   • Sometimes, astrological remedies need to be complemented by conscious efforts. Practicing compassion, patience, and open communication can also help in maintaining a good relationship with in-laws.

Conclusion:

In Vedic astrology, the 8th house, 4th house, and 7th house, along with the planets Venus, Jupiter, and the Ascendant lord, play crucial roles in shaping the relationship with in-laws. If the 8th house is strong and influenced by benefic planets, harmonious relationships with in-laws are likely. On the other hand, afflictions to these houses or planets can cause challenges, but remedies like mantra chanting, fasting, charity, and strengthening the affected planets can help improve the situation.