Marriage in Germany: what changes financially and legally?

Marriage can affect much more than your surname.

For an international couple living in Germany, it can influence:

• the legal framework around property;
• how gains built during the marriage are treated if the marriage ends;
• income-tax assessment;
• survivor-pension rights;
• statutory inheritance rights;
• inheritance and gift-tax allowances;
• decisions around accounts, insurance and beneficiaries.

But several common assumptions are wrong.

Getting married in Germany does not automatically mean:

• everything you own becomes jointly owned;
• every debt becomes a joint debt;
• you must adopt the same surname;
• joint tax assessment always saves the same amount;
• German matrimonial-property law necessarily governs every international couple;
• your spouse automatically receives your entire estate.

The useful first step is understanding which rule applies to which part of your financial life.

1. Marriage does not automatically merge your assets

If German matrimonial-property law applies and the couple has not agreed another regime, the statutory default is normally the Zugewinngemeinschaft.

The name is easy to misunderstand.

It is not the same thing as placing all assets into one common pool.

Under § 1363 BGB:

• each spouse keeps their own property;
• property acquired after marriage also remains the property of the spouse who acquires it;
• the increase in wealth during the marriage can become relevant when the matrimonial-property regime ends.

So a bank account, investment portfolio or property does not automatically become 50/50 simply because the owner gets married.

What does Zugewinngemeinschaft actually equalise?

The core concept is the Zugewinn — broadly, the increase in each spouse’s net assets over the relevant period.

When the statutory regime ends in circumstances such as divorce, German law can compare the gains of the two spouses.

Under § 1378 BGB, if one spouse’s gain exceeds the other’s, the spouse with the lower gain can have a monetary equalisation claim generally corresponding to half the difference, subject to the detailed statutory rules.

That is different from saying:

“Everything is split 50/50.”

The actual calculation can involve:

• initial assets;
• final assets;
• liabilities;
• certain gifts or inheritances;
• valuation dates;
• specific statutory adjustments.

Those calculations are legal work and should be handled by an appropriately qualified lawyer / notary where relevant.

2. For international couples, German property law may not be the applicable law

International couples should not assume that living in Germany automatically means the German statutory matrimonial-property regime governs all their assets.

EU rules on matrimonial-property regimes apply in participating countries including Germany and France.

For marriages covered by those rules, spouses can in certain circumstances make a formal choice of applicable law.

Without a valid choice, the applicable law can be determined by connecting factors such as:

1. the spouses’ first common habitual residence after marriage;
2. failing that, their common nationality at the time of marriage;
3. failing that, the country with which they jointly had the closest connection.

The applicable law can then govern the matrimonial-property regime across assets located in different countries.

That makes this particularly important for couples who:

• married in France and later moved to Germany;
• have different nationalities;
• own property in more than one country;
• expect to move again;
• have a marriage contract or previous legal arrangement.

Do not infer the applicable regime from the country where one bank account happens to be located.

3. Can you choose another matrimonial-property regime?

Where German law applies, spouses can change or structure their matrimonial-property arrangements through an Ehevertrag — marriage contract.

Under § 1408 BGB, spouses can regulate their matrimonial-property arrangements contractually, including changing the applicable property regime.

Under § 1410 BGB, a German marriage contract must be concluded before a notary with both parties present.

Possible arrangements can include, depending on the legal advice received:

• modification of the statutory Zugewinngemeinschaft;
• Gütertrennung — separation of property;
• other specific contractual provisions.

A marriage contract is not automatically necessary for every couple.

It can deserve particular attention when there are:

• substantial pre-marital assets;
• very different levels of wealth;
• a business or company ownership;
• children from a previous relationship;
• property in several countries;
• expected inheritances;
• international mobility;
• a desire to clarify what happens on separation or death.

The correct structure is a legal question, not a financial-product recommendation.

4. What about a French PACS?

A French PACS does not automatically have the same effects as a German marriage, but saying that it has no legal effect in Germany is too broad.

A PACS does not automatically become a German marriage, and you should not assume that German rules granting rights specifically to spouses apply to a PACS in exactly the same way.

But international and EU rules can create legal effects for registered partnerships depending on:

• the right being considered;
• the country involved;
• the applicable conflict-of-laws rules;
• the form and registration of the partnership.

So the correct question is not simply:

“Does Germany recognise PACS: yes or no?”

It is:

“For this specific issue — property, tax, residence, inheritance, pension or another right — what effect does our French PACS have in Germany?”

That should be checked with a lawyer / notary familiar with French-German private international law where it matters.

5. Surnames: the German rules changed in 2025

Since 1 May 2025, German naming law allows more flexibility for married names.

Where German naming law applies, spouses can:

• keep the surnames they had at the time of marriage;
• choose one spouse’s birth / family name as the common married name;
• choose a genuine double married name made from both spouses’ names.

The double name can generally be written with or without a hyphen under the statutory rules.

This reform also expanded double-name possibilities for children.

The rules are therefore no longer limited to a model in which only one spouse adds the other’s surname while the second spouse keeps a single name.

For international couples, the applicable naming law and foreign-document consequences can still require separate verification.

6. Marriage does not automatically make every debt joint

Marriage and joint liability are not the same thing.

Under the German statutory property regime, spouses retain separate property.

A debt signed by one spouse does not simply become the other spouse’s debt because they are married.

But there are important exceptions.

Joint contracts

If both spouses sign:

• a mortgage;
• a loan;
• a rental contract;
• a joint guarantee;
• another contractual obligation,

both can become liable according to the contract.

Transactions for normal family needs

Under § 1357 BGB, one spouse can in certain circumstances enter into transactions for the appropriate needs of the family that create rights and obligations for both spouses.

That rule does not mean one spouse can bind the other to any large financial decision.

Its scope depends on the nature and circumstances of the transaction.

Practical takeaway

Do not use either extreme:

• “Marriage makes all debts joint.”
• “My spouse can never be affected by a debt in my name.”

Check who signed, what the obligation concerns and which legal rule applies.

7. Marriage does not automatically create joint bank or investment accounts

A couple can remain financially organised in several ways.

For example:

• separate current accounts;
• a shared household account;
• separate savings / investment accounts;
• selected joint accounts;
• a combination.

The legal ownership of an account or asset depends on the actual account / ownership structure, not simply on marital status.

A useful household setup can distinguish:

Shared operating money

Rent or mortgage, bills, food, childcare and joint projects.

Individual money

Personal spending, individual investments or existing assets.

Joint long-term goals

Property, family reserves, travel, education or other agreed projects.

There is no legal requirement for every married couple to merge all finances into one account.

8. How does marriage affect German income tax?

Marriage can change how spouses are assessed for German income tax when the statutory conditions are met.

Under § 26 EStG, qualifying spouses can choose between:

• Einzelveranlagung — individual assessment;
• Zusammenveranlagung — joint assessment.

For joint assessment, § 26b EStG combines the spouses’ income and treats them jointly for the assessment subject to the applicable rules.

What is the Ehegattensplitting / Splittingtarif?

For spouses assessed jointly, § 32a EStG applies the splitting method.

Broadly:

1. the couple’s joint taxable income is divided by two;
2. the tariff is calculated on that half;
3. the resulting tax is doubled.

Because the German income-tax tariff is progressive, this can create a tax advantage where taxable incomes are uneven.

But it does not guarantee a large tax saving for every married couple.

If the spouses have similar taxable incomes, the effect can be much smaller.

The real outcome depends on the full tax situation.

If you marry in December, can joint assessment apply to that year?

Potentially, yes.

§ 26 EStG allows the conditions for spouse assessment to have existed either at the beginning of the assessment year or to arise during that year.

So a qualifying couple marrying late in the calendar year can potentially choose joint assessment for that assessment year if the other statutory conditions are met.

That is different from saying:

“Marry before 31 December and you automatically receive a large tax refund.”

A joint assessment can change the annual tax result, but the size and direction of that difference depend on the individual case.

A Steuerberater should confirm the result where the decision or cross-border circumstances make it material.

Tax class is not the same as final annual tax

Payroll withholding during the year and the final annual income-tax assessment are different concepts.

A payroll tax class can affect when income tax is withheld from salary.

It does not by itself determine the final annual tax liability after assessment.

International couples should be particularly careful about assuming that a change visible on a monthly payslip represents the final annual “marriage tax saving”.

9. Survivor pensions: marriage can create rights, but not automatically

Marriage can be relevant to German statutory survivor pensions.

Under § 46 SGB VI, a surviving spouse can potentially qualify for a Witwenrente / Witwerrente if the statutory conditions are met.

The rules distinguish between smaller and larger survivor pensions and can depend on factors such as:

• the deceased spouse’s pension-insurance record;
• whether the surviving spouse remarries;
• age;
• disability;
• raising a qualifying child;
• the surviving spouse’s own income.

The one-year marriage rule

For marriages concluded from 2002 onward, there is normally an important one-year minimum-duration rule.

If the marriage lasted less than one year, the law generally presumes a so-called Versorgungsehe — a marriage entered mainly to create survivor-pension rights — unless the circumstances rebut that presumption.

Examples can include an unexpected accidental death.

So marriage can create survivor-pension rights, but it is not a guaranteed fixed benefit simply because a couple is legally married.

10. Marriage changes statutory inheritance rights — but your spouse does not automatically inherit everything

Under German statutory inheritance law, the surviving spouse’s share depends on factors including:

• which relatives of the deceased also survive;
• the matrimonial-property regime;
• whether there is a valid will or inheritance contract;
• which national inheritance law applies.

Under § 1931 BGB, for example, a spouse inherits one quarter alongside descendants under the basic statutory rule.

Where the German statutory Zugewinngemeinschaft applies, § 1371 BGB can increase the surviving spouse’s statutory share by a further quarter.

That often means a surviving spouse and children share the estate differently from the simple “spouse gets everything” assumption.

The exact result should be calculated for the actual family structure.

Children’s Pflichtteil is not automatic co-ownership of the estate

German law does not mean that children automatically become co-owners of part of every estate asset.

Under § 2303 BGB, a descendant who is excluded from succession by a will can generally have a Pflichtteil claim.

The Pflichtteil is normally a claim equal to half the value of the statutory inheritance share.

That is not the same as automatically becoming a co-heir to specific assets.

Parents and spouses can also have Pflichtteil rights in defined circumstances.

Estate planning therefore needs more precision than “children always inherit X%”.

11. International inheritance may not be governed by German law

This is critical for expat couples.

Under the EU succession framework, an international estate is generally dealt with under the law of the country where the deceased had their last habitual residence, unless another valid rule applies.

A person can also generally choose the law of their nationality to govern their succession by making the choice expressly in a will or equivalent document.

So a French person living in Germany with assets in France and Germany should not assume:

• French inheritance law automatically governs the French assets;
• German law automatically governs the German assets;
• the estate will necessarily be split country by country.

The applicable succession law and inheritance-tax rules are also separate questions.

Cross-border estate planning deserves specialist legal and tax advice.

12. What is the German inheritance / gift-tax allowance for spouses?

Under § 16 ErbStG, where the relevant German inheritance / gift-tax rules on unlimited tax liability apply, a spouse currently has a personal allowance of:

€500,000.

That can be relevant to both inheritance and gifts between spouses under the applicable rules.

It should not be interpreted as:

“Every transfer between international spouses is tax-free up to €500,000.”

Cross-border tax residence, asset location, earlier gifts and other rules can affect the result.

There can also be additional inheritance-specific reliefs in particular cases.

Individual planning should be confirmed by a Steuerberater or appropriately qualified tax professional.

13. Marriage should trigger an insurance and beneficiary review

Marriage changes who may depend financially on whom.

That is a good reason to review existing protection.

Check:

• term life insurance;
• income protection;
• health-insurance family implications;
• accident / other survivor benefits where relevant;
• occupational pension survivor provisions;
• private pension beneficiary clauses;
• investment / insurance beneficiary designations.

Do not assume that marriage automatically updates every private contract.

A contractual beneficiary designation can need a separate change.

Health, income protection and life insurance in Germany

14. Financial independence and joint planning can coexist

Marriage does not require either person to stop building their own financial security.

Joint planning and individual financial resilience can coexist.

A resilient couple can understand both:

The joint picture

• household income;
• recurring costs;
• reserves;
• property;
• family protection;
• children;
• shared long-term goals.

Each person’s individual position

• pension rights;
• personal assets;
• career risk;
• insurance;
• individual debts;
• pre-marital assets;
• professional / business interests.

The objective is not maximum financial separation.

It is that both spouses understand what they own, what they owe and what would happen under important life events.

A practical marriage finance checklist

Legal structure

• Which country’s law governs our matrimonial-property regime?
• Are we in the statutory regime or do we already have an agreement?
• Would an Ehevertrag / cross-border legal review be useful?

Assets

• What does each person own before marriage?
• Which assets are individually owned?
• Which assets will be joint?
• Do we have reliable records of major pre-marital assets?

Debts

• Which debts are individual?
• Which contracts have both signatures?
• Are there guarantees or business liabilities?

Banking

• Do we want separate accounts, a joint household account or both?
• Who can access emergency money?
• How are joint bills funded?

Tax

• Are we eligible for individual or joint German assessment?
• Are cross-border tax rules relevant?
• Does one person have foreign income or assets?

Protection

• Does either spouse depend on the other’s income?
• Are beneficiary clauses current?
• Are survivor benefits understood?

Retirement

• What pension rights does each spouse have?
• Are there German and foreign pension histories?
• Would one person’s career break materially change retirement outcomes?

Estate

• Do we have wills?
• Which law would currently govern succession?
• Are there children from previous relationships?
• Are assets held in more than one country?

This is the point where legal, tax and financial planning often need to connect without being performed by the same professional.

When should an international couple get specialist legal advice?

Consider it particularly seriously when:

• you have different nationalities;
• you married in one country and live in another;
• you own real estate abroad;
• one spouse owns a business;
• you have children from previous relationships;
• there is a large wealth imbalance;
• you have a French PACS or another prior registered partnership;
• one or both spouses expect significant inheritance;
• you want a marriage contract;
• you want to choose the applicable law;
• you need a cross-border will.

A financial review can identify these dependencies.

The legal structure itself should be drafted / confirmed by an appropriate lawyer or notary.

Frequently asked questions

Does marriage make all our assets joint in Germany?

No. If German law applies and you are in the statutory Zugewinngemeinschaft, each spouse generally keeps separate ownership of their assets. The gains accumulated during the marriage can become relevant when the regime ends.

Does marriage make me liable for my spouse’s debts?

Not automatically. Liability can arise from joint contracts and, in certain circumstances, transactions for appropriate family needs under § 1357 BGB. The specific obligation needs to be checked.

Can married couples keep different surnames in Germany?

Yes. Where German naming law applies, spouses can keep their existing surnames.

Can both spouses now use a double married name?

Yes. Since 1 May 2025, German naming law allows spouses to choose a genuine double Ehename formed from both names, where German naming law applies.

Do married couples have to file taxes jointly?

No. Qualifying spouses can choose between individual and joint assessment under the German income-tax rules.

Does joint assessment always save tax?

No. The splitting method can be more advantageous when taxable incomes differ significantly, but the actual result depends on the couple’s full tax situation.

If we marry in December, can the marriage affect that year’s tax assessment?

Potentially yes. If the statutory conditions for spouse assessment are met during the assessment year, joint assessment can potentially be chosen for that year. That does not guarantee a particular refund.

Does a French PACS give exactly the same rights as a German marriage?

No. A PACS should not be treated as automatically equivalent to marriage for every German legal, tax, pension or inheritance purpose. Its effect needs to be checked for the specific issue.

Does my spouse automatically inherit everything?

No. Statutory inheritance shares depend on the family structure, property regime, will / inheritance contract and applicable succession law.

Are children automatically co-heirs even if a will excludes them?

Not necessarily. Under German law, an excluded descendant can generally have a Pflichtteil monetary claim equal to half the value of their statutory share. That is different from automatically owning part of each estate asset.

Marriage changes the framework, not every financial decision automatically

Marriage is not simply a tax-optimisation or legal-protection decision.

Its financial effects are broader.

Marriage can change:

• the legal framework around wealth;
• tax-assessment choices;
• survivor benefits;
• inheritance rights;
• household financial dependencies.

But an international couple must first determine which law applies, then distinguish what happens automatically from what requires a contract, tax election, beneficiary change, will or specialist advice.

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Official sources

This article was reviewed against current sources including:

• BGB § 1363 — statutory Zugewinngemeinschaft and continued separate ownership of spouses’ assets;
• BGB § 1378 — equalisation claim when one spouse’s gain exceeds the other’s;
• BGB §§ 1408 and 1410 — marriage contracts and notarial-form requirement;
• BGB § 1357 — transactions for appropriate family needs that can bind both spouses;
• BGB § 1355 / BMJV 2025 naming-law reform — modern surname rules and genuine double married names from 1 May 2025;
• EStG §§ 26 and 26b / § 32a — individual vs joint spouse assessment and splitting method;
• SGB VI § 46 / Deutsche Rentenversicherung — widow / widower pension and the one-year marriage rule;
• BGB §§ 1931 and 1371 — statutory spouse inheritance and effect of Zugewinngemeinschaft on death;
• BGB § 2303 — Pflichtteil claims;
• ErbStG § 16 — €500,000 spouse inheritance / gift-tax allowance under the applicable conditions;
• Your Europe / EU Matrimonial Property Regulation — applicable law for international couples’ property regimes;
• Your Europe / EU Succession Regulation — habitual-residence rule and possibility of choosing the law of nationality for succession.

This article is general information. Matrimonial-property, inheritance, PACS recognition, wills and marriage contracts require legal advice where individual application matters; individual tax treatment requires an authorised tax professional.