A couple buys a car, renovates a home, or requests money to face a common project and both sign the loan. Years later, separation arrives and one of them commits to continue paying the installments. The agreement can serve to organize the accounts between both, but there is a fundamental issue: in front of the bank, both can continue being debtors.
The sentimental breakup, divorce, or end of a de facto couple does not automatically modify a financing contract. To know what the entity can claim, one must refer to the loan conditions and check, especially, whether the borrowers assumed joint or several liability. The Civil Code regulates both possibilities and establishes that solidarity must derive from the obligation assumed.
If the loan is joint, the bank can claim everything from one alone
The difference is important. In a joint obligation, the creditor can go against any of the debtors or against all simultaneously until collecting in full what is owed. This is established by article 1144 of the Civil Code.
Imagine an ex-couple that still owes 20,000 euros to repay. Even if both had agreed among themselves to pay 10,000 euros each, if the loan establishes joint liability and one stops complying, the bank can claim the pending amount from the other under the terms provided in the contract.
This does not necessarily mean that the one who ends up paying everything must bear the cost permanently. The Civil Code allows the joint debtor who pays to subsequently claim from the other the part that corresponded to them, along with the interest on the advance.
In other words, there are two different relationships: the one of the couple with the bank and the one that the former members of the couple maintain between themselves.
Separating does not remove anyone from the loan
This is one of the most frequent mistakes. That in the divorce agreement or in a private agreement it is established that one of the two will keep the loan does not by itself obligate the financial entity to release the other.
The Civil Code establishes that replacing one debtor with another requires the creditor's consent. The Bank of Spain also explains that changing the holder of a loan through a debtor substitution requires the authorization of the financial entity.
Therefore, a clause like "from now on Juan will pay all the installments" can produce effects between Juan and his ex-partner, but if both continue to be listed as borrowers in the contract, the bank retains the rights that correspond to it against both.
The bank is not obliged to remove one of the holders
A common solution after a separation is to request the entity to leave the loan solely in the name of the person who keeps the financed asset. However, the bank is not obliged to accept the change.
The Bank of Spain expressly reminds that entities are not obliged to modify the ownership of a loan, as it is a decision related to their commercial and risk policy. By removing one of the borrowers, the entity loses one of the personal guarantees it considered when initially granting the financing.
The bank can reassess the economic capacity of the person who intends to take on the debt alone and accept the operation, reject it, or propose new conditions or guarantees.
What if the loan does not establish joint liability?
Signing a credit between two people does not automatically allow one to assert that the bank can always demand 100% from either of them. Article 1137 of the Civil Code establishes that the existence of several debtors does not by itself imply solidarity. This must result expressly from the obligation.
When the debt is joint and no other distribution has been established, the Civil Code starts from the division of the credit or debt into as many equal parts as there are creditors or debtors.
Therefore, before determining who has to pay after a separation, the first thing is to review the loan contract. The specific wording of the responsibility assumed by each borrower is much more important than who ultimately used the money.
What happens if one stops paying their part
Let’s suppose that a couple was paying a monthly installment of 500 euros and, after separating, decides to assume 250 euros each. If one stops paying their part, it is not enough for the other to inform the bank that they have fulfilled "their half" if the contract requires something else.
From the entity's perspective, what matters is that the full loan installment is paid according to the contract. In a joint debt, the creditor can turn against any of the obligors to demand compliance.
The person who ends up paying more money than they were supposed to can later claim from their ex-partner, but they must do so separately. Therefore, simply stopping payment because "my ex was supposed to take charge" can also create a problem for the one who continues to appear on the loan.
Loan and mortgage: keeping the property is not enough
The problem is especially common with mortgages. A person can take ownership of the property after the divorce or buy their ex-partner's share of the property, and still, the latter continues to be listed as a debtor to the bank.
These are different operations. One thing is who owns the house and another who is responsible for the loan used to buy it.
If one wants to keep both the property and all the financing, it will usually be necessary to negotiate with the bank a modification of the loan to remove the other debtor. The Bank of Spain refers to this operation as debtor subrogation and reminds that it requires the authorization of the entity.
Hence, an ex-partner can cease to be the owner of a property but remain linked to the mortgage if the banking contract has not been modified as well.
Does it matter to be married or in a registered partnership?
To determine responsibility towards the bank, the decisive factor is fundamentally who signed the loan and under what conditions, not whether the borrowers are married, registered as a partnership, or simply cohabiting.
The matrimonial economic regime can have consequences on which assets respond to certain obligations, especially when there is a community of property, but separation or divorce do not erase the contractual obligations previously assumed towards third parties.
The same happens with an unmarried couple: if both are listed as borrowers, the end of the romantic relationship does not mean the end of the debt.
Three common solutions after a separation
When there is an outstanding joint loan, ex-partners usually have several alternatives. They can maintain the loan as it is and agree on how they will split the payments; pay off the debt early, if they have the necessary money; or negotiate with the entity for one of them to become the sole borrower.
This last option is the one that really allows breaking the financial link between both, but it depends on the acceptance of the bank. Until the entity formally releases one of the borrowers, a private agreement between the ex-partners does not equate to disappearing from the loan.
The key, therefore, is not to confuse who has promised to pay with who is obligated to the creditor. A couple can internally distribute a debt as they see fit, but if both signed the loan and both continue to appear on it, the separation does not alone modify what the bank can demand from them.