If you have Jupiter as your DaraKaraka, your marriage partner is philosophical with a set of ideals they choose to live by. They are devoted to their beliefs, whether religious, spiritual, or philosophical and their life is marked by needing to explore their beliefs deeply. Jupiter also represents the law, and even if your spouse is not religious they have “laws” that they uphold. For you, it’s important to have a spouse that you can discuss many branches of knowledge. In a partner, you look for virtue, intelligence, and shared values.
Jupiter is the natural Karaka for a husband in a woman’s chart, as Jupiter brings qualities of wisdom, joy, prosperity, and creativity. Whether you’re a man or a woman with Jupiter DaraKaraka, your spouse contributes humor, beliefs, and creativity to the marriage. Jupiter is the planet of good fortune and expansion. Many times this Darakaka gives a spouse who contributes wealth or expands your views on the world. (Always check aspects and dignity of Jupiter to better gauge this)!
With Jupiter as DaraKaraka, your spouse has Pisces or Sagittarius as their Sun, Moon, or ascendant, especially if Jupiter is in those signs in your chart. The key to a more accurate and detailed description of your spouse is to check the sign and bhava/house. Whatever bhava your Jupiter is placed in will be an important bhava in your spouse’s chart. Combine the Rasi sign and bhava with the qualities of Jupiter and you get a good idea of what your spouse will be like.
Consider the strength of Jupiter DaraKaraka in the Rasi, Saptamsa, and Navamsa
The level of joy, creativity, wisdom, money, etc that your spouse produces depends on the strength of your DaraKaraka. Check this in the Rasi chart as well as the D7 and D9 divisional charts. If your Jupiter has negative aspects or is in poor dignity then your spouse will have the less-desirable qualities of Jupiter. Negative traits of Jupiter include excessive/blind optimism and idealism, overspending, and overindulgence.
Planets conjunct Jupiter will also influence the personality of your spouse. If there are close conjunctions to Jupiter, your spouse will also have the characteristics represented by those other planets. For instance, if Jupiter is conjunct Saturn, it reduces your spouse’s optimism and creates a more frustrated personality. Remember that when looking at aspects, only consider aspects in the Rasi and apply them to the D7 and D9.
Overall, with Jupiter DaraKaraka you can expect an intelligent spouse who loves to learn and share their knowledge. They want to live a life with purpose and focus on subjects related to philosophy, creativity, spirituality. On the negative side, they can become preachy, mismanage their money, or suffer from issues related to overindulgence.