In-Law Compatibility

Mother-in-law, father-in-law, a partner's siblings: compare your chart with theirs to see where the house rules clash and how to keep a kind distance.

Updated October 25, 2026

ezfate is a tool for self-reflection and entertainment. Readings are not medical, legal, financial or psychological advice.

Example pair

In-laws

Person A

丁The Candle

Dīng · Yin Fire · Horse

庚午 辛巳 丁丑 丁未

Open Person A's chart

A strong natural pull and plenty of support between the two charts.

Compatibility score: 86 out of 100. Excellent match.

Person B

壬The Ocean

Rén · Yang Water · Goat

辛未 壬辰 壬子 甲辰

Open Person B's chart

In-laws

Your charts, read as in-laws

For in-laws, ezfate weighs Day Masters and Element exchange most. This is what those parts of your two charts say.

  • Day Masters

    25% of the score (In-laws)

    88

    Day Masters show how your temperaments meet; combining or feeding pairs make family life easier.

  • Element exchange

    25% of the score (In-laws)

    81

    The element exchange shows whether time together leaves you supported or tired.

Strongest point: Zodiac signs (95)To work on: Cross links (75)

Who you are to each other

Each Day Master read as a ten god in the other person's chart.

正官

Person B in Person A's chart

Direct OfficerPower

An in-law who sets the house rules for you (官星): the classic mother-in-law pressure. Polite, clear boundaries work better than silence.

正財

Person A in Person B's chart

Direct WealthWealth

An in-law you want to manage, or who leans on you for practical things. Respect their way of doing things.

The pillars that speak to this relationship

Heaven and earth combine (天合地合)

Your day stems combine and your day branches form a six harmony: one of the strongest classical signs of a bond.

  • Family lines (year pillars)

    The year pillar stands for the family line and its customs (家風).

    They combine: this side of the relationship comes easily.

    Six Harmony
  • Household (month pillars)

    The month pillar is your environment and daily rhythm: how you run a home together.

    No direct link: neutral ground you shape yourselves.

    No link

Score breakdown

  • Day Masters

    25% of the score

    88

    丁 Dīng and 壬 Rén combine into Wood: a strong natural pull between you.

  • Day branches

    5% of the score

    95

    丑 Chǒu and 子 Zǐ: Six Harmony.

  • Element exchange

    25% of the score

    81

    Person B's chart is 44% Water + Metal, the elements Person A needs most. Person A's chart is 30% Metal + Water, the elements Person B needs most.

  • Zodiac signs

    25% of the score

    95

    Horse and Goat: Six Harmony.

  • Cross linksLowest

    20% of the score

    75

    6 combinations and 3 clashes across the two charts.

Friction check

No real weak spot

Even your lowest factor, Cross links, scores 75/100, so the friction between you is mild.

How it shows up, and how to handle it

The sample reading shows how chapter 4, “Friction and how to handle it”, handles a pair like this.

Pillar by pillar

Each column compares the same pillar in both charts: stems on top, branches below.

Hour時

Day日

Month月

Year年

A
丁未
丁丑
辛巳
庚午
B supports ANo link
Stem CombinationSix Harmony
A supports BNo link
Same elementSix Harmony
B
甲辰
壬子
壬辰
辛未

What you give each other

Each chart has elements it needs. A good match supplies some of them.

Person B → Person A

水Water金Metal

Person B's chart is 44% Water + Metal, the elements Person A needs most.

Person A → Person B

金Metal水Water

Person A's chart is 30% Metal + Water, the elements Person B needs most.

Get the full compatibility reading

A plain-English AI reading of how your two charts work together, in five chapters: your match at a glance, how you work together, what draws you together, friction, and timing. The first chapter is free.

See a sample compatibility reading

How the score is weighted for in-laws

The same five factors as every ezfate match, weighted for this relationship. Lovers use the classic weights shown in grey.

  1. 0125%

    Day Masters

    lovers 25%

    Day Masters show how your temperaments meet; combining or feeding pairs make family life easier.

  2. 0225%

    Element exchange

    lovers 25%

    The element exchange shows whether time together leaves you supported or tired.

  3. 0325%

    Zodiac signs

    lovers 10%

    Year animals weigh most with in-laws: they stand for the two families and their customs (家風).

  4. 0420%

    Cross links

    lovers 15%

    Cross links show how often small remarks turn into friction.

  5. 055%

    Day branches

    lovers 25%

    The day branches matter little unless you live together.

How Bazi reads in-laws

In-law compatibility

In-laws are two families meeting, so this score leans on the pillars of family: the year pillars (family lines) and the month pillars (the household).

  • Year animals (年支), 25%: the two family lines and their customs (家風).
  • Household (月柱): how each of you runs a home.
  • Day Masters, 25%: how your temperaments meet.
  • Roles: an in-law who is your Officer (官星) sets house rules for you; one who is your Resource (印星) is an ally.

The spouse palaces count only 5% unless you live together; if you do, read them as how the shared home feels.

Daughter-in-law and mother-in-law: the classic pattern

In the classical reading of a woman's chart, the husband is the Officer star and his mother is the element that produces it, which lands on her Wealth star (財星): someone she tends to manage, and who tends to test her about running the house. It is one reason the relationship has been famously delicate for centuries.

Your two real charts may say something quite different. If your mother-in-law reads as your Resource (印星), she is more likely an ally; if she reads as your Officer, set kind, clear boundaries early.

House rules and family lines

When your year branches combine (支合, 三合), the two families' ways feel familiar. When they clash, expect different customs around holidays, food and money. Neither is a problem in itself; knowing which you have tells you what to talk about first.

The month pillars show how each of you runs a home day to day: meals, tidiness, money. When they clash, agree on whose house follows whose rules.

Keeping a kind distance

Distance is the classical remedy for clashes, and it is good advice for in-laws: regular, planned contact works better than constant contact. Your partner is the bridge between you.

In-law compatibility chart: the ten Day Masters

Every pairing of Day Masters, scored the way this relationship scores them. Rows are You, columns Your in-law. Select a cell to read the pair.

甲
乙
丙
丁
戊
己
庚
辛
壬
癸
甲
乙
丙
丁
戊
己
庚
辛
壬
癸

甲×己

88

88 / 100 for in-laws

甲 Jiǎ and 己 Jǐ combine into Earth: a strong natural pull between you.

In-law compatibility: questions and answers

In-law compatibility

The full reading, written for in-laws

Five chapters on these two charts, written for this relationship: your match at a glance, how you work together, what draws you together, friction and timing.