Rule 7 cancels 30 points when Mars is Yogakaraka for the chart, which happens for Cancer and Leo Ascendants only. It is the second-strongest rule of the ten, and it depends entirely on the Ascendant rather than on where Mars sits.
This page covers how rule 7 is evaluated, what it is worth, the cases where it interacts with other rules, and a worked example with the actual arithmetic.
How is rule 7 evaluated?
A Yogakaraka is a planet that rules both an angle (kendra) and a trine (trikona) from the Ascendant, which classical doctrine treats as making it the chart’s most beneficial planet regardless of its natural character. Mars qualifies for exactly two Ascendants:
| Ascendant | Mars rules | Why it qualifies |
|---|---|---|
| Cancer | 5th and 10th | A trine and an angle |
| Leo | 4th and 9th | An angle and a trine |
For every other Ascendant, rule 7 does not apply at all.
Does the sign Mars occupies matter?
No, and this is the most common misunderstanding of the rule. Yogakaraka status is a property of the Ascendant, not of Mars’s placement. A Cancer Ascendant with Mars in Taurus gets the full 30 points. An Aries Ascendant with Mars in Leo gets nothing from this rule.
Is ‘Mars in Leo’ the same as ‘Leo Ascendant’?
No, and confusing the two produces wrong self-assessments constantly. Mars in Leo describes where Mars sits. A Leo Ascendant describes where the chart begins. Only the second triggers rule 7. See Mars in Leo for the distinction in full.
What does rule 7 do to a real score?
A Cancer Ascendant with Mars in Aquarius, which is the 8th house from Cancer.
The 8th house base weight of 90 with an Ascendant trigger gives a raw 50.0. Rule 7 removes 30%, leaving a net 35 out of 100 — the Mild band.
Aquarius is a neutral sign for Mars and contributes no dignity cancellation of its own, so the entire reduction here comes from the Ascendant.
What should you know before relying on this rule?
This rule is absorbed when rule 8 applies — a correction made in engine v1.6.1.
The reason is geometric. A sign-and-house pair fixes the Ascendant: Scorpio can only occupy the 4th house from a Leo Ascendant, and Capricorn can only occupy the 7th from Cancer. Those are precisely the two Yogakaraka Ascendants, so rule 7 fired on those two combinations in 100% of charts and on the other three exceptions in none.
That is not an independent observation about a chart — it is the same placement re-described. Counting both left the five named exceptions scoring 35, 35, 45, 65 and 75 while the tradition weights them equally. They now all score 35. Our methodology documents the correction in full.
How does rule 7 compare with the other nine?
Rule 7 carries 30 of the 100 points available across the ten rules, and cancellation is capped at 85% in total — classical tradition treats a dosha as mitigated rather than erased, so no chart reaches zero.
The rules most worth reading alongside this one:
- Rule 8 — exceptions — read the rule
- Rule 2 — exalted — read the rule
- Rule 1 — own sign — read the rule
The complete ten-rule reference sets all of them out together with their weights and sources.
Frequently asked questions
Which Ascendants make Mars Yogakaraka? Cancer and Leo only. Mars rules the 5th and 10th from Cancer, and the 4th and 9th from Leo.
Does Mars need to be in a particular sign? No. Yogakaraka status depends only on the Ascendant.
Is Mars in Leo the same as a Leo Ascendant? No, and the difference matters. Only a Leo Ascendant triggers this rule.
Why is this rule sometimes shown as absorbed? Because two of the five sign-house exceptions force a Cancer or Leo Ascendant, so rule 7 would restate what rule 8 already covers. It is shown as present but already counted, never as absent.
Is 30 points the highest cancellation? Second highest. Rule 8 scores 35.
What if I have a Cancer Ascendant and Mars in Capricorn in the 7th? Rule 8 applies at 35 and absorbs both rule 7 and rule 2. Your total from these is 35, not 90.
Where to go next
To see which of the ten rules actually fire on your chart rather than reading them in the abstract, run the cancellation calculator — it reports every rule tested, including those that did not apply and those that could not be evaluated. Our methodology documents how the weights are derived and where our scoring decisions depart from classical instruction.