Compatibility reading is usually filed under romance, but nothing in the method is specific to couples. It compares two charts and describes how they exchange energy. The same operation applies to co-founders, long-term collaborators, and anyone who has to make decisions alongside another person for years at a time.
This page covers why the comparison transfers, which dimensions matter most when the relationship is a working one, and what the exercise is not.
The mechanics do not care what the relationship is called. Two charts still supply each other, structure each other or run parallel. What changes is the emphasis. In a romantic reading, the private and emotional dimensions carry a lot of weight. In a working partnership, the questions that matter most are narrower and blunter: who fills the gap the other one has, who decides and who executes, and who holds the long view when the short term gets loud.
That is why a comparison is often more immediately useful for a working relationship than for a romantic one. Business partnerships are already described in terms of roles, so the vocabulary lands easily. If you want the general method first, our compatibility overview covers the four dimensions in full and applies to any pairing.
Three layers do most of the work when two people are building something together.
Read together, those three give you a fairly concrete picture of a working relationship: who brings what, and where the two of you would both be short at the same time.
If you are doing this yourself with two charts in front of you, take it in order.
You can get both element distributions free from the BaZi calculator, and the Day Master for each person from the Day Master tool. If you want the vocabulary for the elements themselves first, our five elements overview is the place to start.
Two limits are worth stating clearly.
First, this is not investment advice, and it is not a business recommendation. A chart comparison cannot tell you whether a market is sound, whether a company will work, or whether a deal is fair. Those are questions about the world, and a birth chart has nothing to say about them.
Second, it is not a verdict on whether to go into business with someone. A reading can tell you where two people are likely to complement each other and where they will both be strained at once. Both of those are common in strong partnerships. The decision to sign, hire, or incorporate is a decision about people and circumstances, made by the people involved.
Used properly, a comparison is a briefing document. It gives you the question list before the first difficult quarter, which is a good deal more useful than a verdict would be.
Chart both partners for free, then compare them side by side.
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