Nadi and Bhakoot Before the Wedding

Kundli matching is done before marriage largely because Nadi is worth 8 and Bhakoot is worth 7, together 15 of the 36. A shared nadi, both Moons in Adi or both in Madhya or both in Antya, zeros the largest koota. A 6/8, 5/9, or 2/12 Moon-sign pair zeros Bhakoot. Those two failures are what families mean when they say the charts did not match. The smaller kootas, Varna through Gana, matter, and they are not why the ritual feels urgent.

Doing it before the wedding means a zero nadi can be named while the invitation still does not exist.

Bhakoot has a same-lord exception: Taurus and Libra, Aries and Scorpio, Capricorn and Aquarius. Matching is done so someone competent can apply that exception instead of panicking at every 6/8. Nadi's zeros are treated more strictly in ordinary practice. A couple who share a nadi and also have a clean 7th house are a koota problem with a workable marriage house. The before is when you can hold both ideas without pretending the 8 points returned.

The score does not see the dasha. A permitted nadi can still be years away from the 7th lord's period.

Once the marriage exists, Nadi and Bhakoot describe the Moons and do not unwind the 7th house. The importance of before is practical, not magical. You cannot un-share a nadi later, and you also cannot claim the wedding violated a planet that Ashtakoot never contained. Mars, the 7th lord, and the Navamsa were always separate homework.

Match for the 8 and the 7. Then read the houses those points ignore. That order is the whole reason to do it early.