Relationship Compatibility

Compatibility in BaZi is usually told as a love story, but the same chart comparison works for any two people: a co-founder, a best friend, a parent, a mother-in-law, a manager. What changes is the question you ask. Fate Hall keeps one calculation and reads it differently for each kind of relationship.

One comparison, many relationships

Every reading starts from the same facts. Each person's Day Master — the stem of the day they were born — is compared with the other's, and the branches of the year, month and day pillars are lined up pair by pair. What a couple hopes for (attraction, a shared home) is not what a business partner needs (clear roles, a shared view of money), so each relationship reading picks the parts of that comparison that matter for it and explains them in its own terms.

For couples and spouses, the Compatibility tool keeps its full romantic reading, with day-pillar analysis, spouse stars and the years when marriage luck opens for both of you.

The Day Masters: who feeds whom

The five elements either feed or control each other. Put your Day Master next to theirs and one of five things is true: you share an element, yours feeds theirs, yours controls theirs, theirs controls yours, or theirs feeds yours. In Ten Gods language the other person becomes one of your Peer, Output, Wealth, Officer or Resource stars.

None of these is good or bad on its own. A Resource relationship, where their element feeds yours, is the classic picture of a parent or mentor. The same pattern in a business partnership can mean a backer who supports you. An Officer relationship, where their element controls yours, fits a boss well and a friend less comfortably. That is why each relationship has its own scoring table for the Day Master link, shown on its guide page.

The branches: background, daily life and the inner self

Classical compatibility reads the three main pillars as three layers of a relationship:

• Year branch — family background and the wider circle you grew up in. It weighs most in in-law and parent–child readings.
• Month branch — the social self: daily rhythm, how you work and talk. It carries the most weight in working relationships.
• Day branch — the inner self, sometimes called the "spouse palace". Between partners and friends it shows how much you trust each other at heart.

Each pair of branches is scored by its relationship. Harmonies pull together, clashes pull apart, and Yuan Jin is the slow-burning irritation Korean readers watch for. See Clashes & Combinations for the full list.

How the relationship score is put together

Each relationship reading has six areas, every one scored from 35 to 95. The overall score is the plain average of the six. The parts that can be counted are counted exactly from the two charts:

• Role: the Day Master table for that relationship, plus 6 points if your Day Masters form a Stem Combination.
• Branch areas: the score in the table above, less 8 if the pair also forms a punishment.
• Filling each other's gaps: 60, plus 9 for every element that one of you lacks and the other has.
• Growth and money sense: 62, plus 8 for each of the first two characters of your Resource (or Wealth) element in their chart, and the same the other way round.
• Handling conflict: 76, less 6 for each clash, 5 for each Yuan Jin and 6 for each punishment among the three branch pairs, plus 6 if one Day Master's element feeds the other's.

Animal-sign, zodiac and MBTI matches are shown alongside for fun, but they are not part of the relationship score.

Reading the result sensibly

A compatibility score describes a tendency, not a verdict. A high-scoring friendship still needs effort, and a low-scoring working relationship can thrive on clear agreements. The most useful parts of a reading are usually the two notes at the end — the strongest area and the one to watch — because they point at something you can do. And when the result is about someone you depend on, like a parent, a manager or a business partner, treat it as a prompt for conversation, never as a reason to cut someone off or to make a financial or legal decision.

Common questions

Do I need the other person's birth time? No. The relationship readings use the year, month and day pillars and the Day Master, which only need a birth date. A known birth time can add the hour pillar's elements to the "filling each other's gaps" count.

Why does the score change when I switch between "my parent" and "my child"? Because the role table changes. The same Day Master link means something different when care is supposed to flow from them to you than when it flows from you to them.

Is this the same as the romantic compatibility score? No. The couples reading has its own, longer method. Use the relationship menu in the Compatibility tool to switch between them.

Related guides

• Business Partner CompatibilityWhat two birth charts say about a business partnership: roles from the Day Masters, the Rob Wealth warning, trust, working style and money sense.
• Friendship CompatibilityHow BaZi reads a friendship: how you connect, how you spend time together, a lasting bond and making up after a fight — and why same-element friends need one caution.
• Parent and Child CompatibilityWhich way care flows between a parent and child, read from both sides: the six relations of classical BaZi, emotional bond, conversation, the generation gap and learning from each other.
• In-Law CompatibilityHow BaZi reads in-laws: the classical spouse-star method, and Fate Hall's direct comparison from both sides — family background, way of life, opening up and handling conflict.
• Boss and Employee CompatibilityAuthority, trust and growth in a working relationship, read from both sides: Officer and Resource stars, work communication, and how to use a reading at work.
• Clashes and CombinationsHow the twelve branches combine and clash: the Three Harmonies, Six Harmonies, clashes and the Korean Yuan Jin, with a full lookup grid and the punishments and harms of classical texts.