Kundali Milan's 36 gunas vs the Tamil 10-porutham system compared: scoring units, deal-breaker checks, Mars dosha handling, and what cross-regional couples do.
Kundali Milan (North India) scores compatibility as 36 gunas across 8 kootas, with Nadi and Bhakoot as the heaviest checks. The Tamil porutham system (South India) evaluates 10 poruthams individually, with Rajju and Vedha as outright vetoes. Both start from the couple's birth Nakshatras; they differ mainly in scoring style and which defects are treated as deal-breakers.
Both systems answer the same question — are these two birth charts compatible for marriage? — and both start from the same raw material: the bride's and groom's birth Nakshatra and Rashi, fixed by date, time and place of birth. What differs is the framework built on top. North Indian families use Kundali Milan (Ashtakoota or Gun Milan), a points system totalling 36. Tamil and most South Indian families use the 10-porutham system, a checklist where each porutham is judged on its own.
Neither system is a subset of the other, but they overlap heavily. Several checks appear in both under different names — Gana koota and Gana porutham, Yoni koota and Yoni porutham, Tara koota and Dina porutham are near-cousins. The deepest structural parallel is between the two systems' hardest vetoes: Nadi dosha in the North and Rajju dosham in the South.
| Aspect | Kundali Milan (North) | 10-Porutham (South) |
|---|---|---|
| Region | North, West and East India; Hindi-belt and most kundali-tradition communities | Tamil Nadu and much of South India; Telugu families use a close variant |
| Structure | 8 kootas with weighted points (1 to 8) | 10 poruthams, each judged pass / partial / fail |
| Scoring unit | Gunas out of 36; 18+ traditionally required | Count of poruthams matched; 5+ with the vital ones intact is common practice |
| Heaviest checks | Nadi (8 pts) and Bhakoot (7 pts) — over 40% of the total | Rajju and Vedha — treated as outright vetoes regardless of other scores |
| Mars dosha handling | Manglik (Mangal dosha) checked separately, outside the 36 gunas | Chevvai dosham checked separately, outside the 10 poruthams |
| Style of verdict | One aggregate number plus a dosha list | A per-porutham checklist; elders read the pattern, not a total |
The philosophical difference is aggregation. Kundali Milan compresses everything into one number, then warns about doshas. The porutham system never totals — a match with 8 of 10 poruthams but a Rajju failure is rejected in traditional practice, while a 5-porutham match with Dina, Gana and Rajju intact may be accepted. For the full Southern checklist, see our 10-porutham guide; for the Northern system, the 36-guna explainer.
Every matching tradition reserves veto power for a small set of checks. Knowing which ones carry that power tells you what each family will look at first:
When a Tamil family and a North Indian family consider an alliance — increasingly common in cities and among NRIs — the horoscope conversation can stall before it starts, because each side's astrologer produces a report the other side cannot read. The groom's family sees "24/36 gunas", the bride's family sees "7/10 poruthams", and neither number maps onto the other.
Both systems need only date, time and place of birth for each person. Running both from one verified set of details removes the most common source of disagreement — inconsistent input data.
Check Nadi and Bhakoot on one side, Rajju and Vedha on the other, and the Mars dosha status under both traditions' rules. If the vetoes are clear in both systems, the aggregate scores are usually a formality.
There is no need to convert one score into the other. Give the Northern family the guna breakdown and the Southern family the porutham checklist — both derived from the same charts.
Neither is more accurate — they are two classical frameworks built on the same astronomical inputs, the couple's birth Nakshatras and Rashis. Kundali Milan aggregates into a 36-point score with Nadi and Bhakoot as its heaviest checks; the porutham system judges 10 factors individually with Rajju and Vedha as vetoes. Families generally follow the system of their own tradition.
Yes. The veto checks use different Nakshatra groupings, so a pair can score well over 18 gunas yet share the same Rajju group, which traditional Tamil practice treats as a rejection. The reverse also happens — all key poruthams can match while the pair carries Nadi dosha. Cross-regional families should therefore check both systems' deal-breakers explicitly.
It is not converted — the units are not comparable. Gunas are weighted points summed across 8 kootas; poruthams are individual pass/fail judgements that are never totalled into a single number. The practical approach for a cross-regional match is to compute both systems from the same birth details and read each report in its own terms.
The core principle is shared: Mars in certain houses of a chart creates a dosha (Manglik in the North, Chevvai dosham in the Tamil tradition), and both systems prefer that partners have comparable Mars status. But the exact house lists, exemption rules and severity gradings differ between the traditions, so the same chart can be graded differently under each.
There is no rule that one system overrides the other. The common-sense practice is to compute both from one verified set of birth details, confirm the deal-breaker checks — Nadi and Bhakoot, Rajju and Vedha, and Mars status — are acceptable under each, and then let each family read the framework their elders trust.
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