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Préstamos8 min read

Loan Between Two People: How to Create a Working Agreement for Payments, Changes and Exit

A guide to organising payments, records and changes when two people share financing, with a useful plan for unexpected events or an exit.

Two people reviewing a payment agreement for a shared loan

Sharing financing can make it easier to purchase an asset, carry out renovations or undertake a joint project, but it also requires ongoing coordination. A payment agreement for a shared loan does not replace the contract signed with the financial institution, nor does it alter its terms on its own. Its purpose is different: to organise the day-to-day relationship between the people responsible for payments and reduce misunderstandings before they arise.

This agreement can be a simple dated document, supplemented by clear payment records. The important thing is that it describes how the parties will act in normal situations and also when one party's income, living arrangements or priorities change.

What sharing a loan involves

What sharing a loan involves — visual guide by CalculaPréstamo

There are two aspects that should be distinguished. On the one hand, there is the relationship with the financial institution: the people who signed should review the contract to understand who is liable, what obligations exist, how the instalment is collected and what procedures are required for a change. Liability to the institution depends on what is set out in the contractual documentation and applicable regulations.

On the other hand, there is the private coordination between co-borrowers or people who contribute to the payment. Even if one person contributes a larger share each month, that internal arrangement does not necessarily change what was agreed with the institution. Therefore, it is advisable to avoid assumptions such as that no longer living together, selling an asset or verbally agreeing that one person will take over the instalment automatically releases the other party from liability to the lender.

Before signing, and also if the loan is already underway, it is useful to read the terms, identify due dates, associated costs and the procedures provided for early repayments or changes. If there are doubts about the legal scope of an obligation, it may be prudent to seek independent professional advice.

Why agree on how it will work before the first due date

An instalment paid on time does not, by itself, show who contributed what amount, under what criteria or whether there was an advance that must later be offset. When there is no defined method, a temporary difference in income or an unexpected expense can quickly become a dispute based on differing recollections.

The aim is not to anticipate that there will be problems, but to create a verifiable routine. A good agreement sets rules specific enough to operate each month, while allowing for reviews when relevant circumstances change. It should be understandable to both parties and reflect a shared decision, not an imposition.

It can also prevent the conversation from being limited to the instalment. Many financing arrangements involve related expenses, such as linked insurance, maintenance of the financed asset, fees set out in the contract or administrative costs. Deciding in advance which ones are shared and which are not helps calculate the total commitment.

Basic elements of a working agreement

The document does not need to be complex, but it should be specific. It may include the following points:

  • Identification of the financing: purpose, institution, internal reference that both people can consult and usual due date.
  • Instalment and contributions: expected instalment amount and the chosen allocation: half each, a fixed percentage, a specific amount or a criterion linked to income.
  • Internal deadline: a date before the main direct debit or transfer, allowing room for unexpected issues.
  • Payment channel: account from which the instalment is paid and the method each person uses to make their contribution.
  • Associated expenses: list of shared items, allocation criteria and method for approving unusual expenses.
  • Communication: channel for important notices and an indicative timeframe for reporting a payment difficulty.

An equal split may be easy to manage, but it does not always reflect each party's financial reality. A percentage of income may seem fairer in some cases, although it requires defining which income will be considered, when it will be reviewed and what will happen in the event of temporary variations. There is no universal formula: the useful criterion is the one both people understand, can maintain and put in writing.

How to record payments, advances and expenses

Keeping evidence does not mean distrust; it allows facts to replace memory. Each contribution should be linked to a date, amount and identifiable purpose. Transfers with a clear reference, statements from the account used and a shared record can serve this purpose.

The record may note, for example, the month's instalment, each party's expected contribution, amounts received, who made the final payment to the institution and any outstanding difference. If one person advances an amount, it is preferable to state whether it is a temporary loan to the other person, a future offset or a permanent change in the allocation.

Extraordinary contributions require particular attention. If a repair related to the financed asset is paid for or an additional instalment is covered, it is advisable to record whether that expense changes the internal percentages, gives rise to reimbursement or will not be offset. An ambiguous message may not clarify the agreement sufficiently.

Joint account, transfers or reimbursements

An account used for shared expenses can simplify the process: both people deposit their share before a set date and the instalment is debited from it. Its main advantage is visibility of the available balance. In return, the parties need to decide who can operate it, how much of a buffer to maintain and how transactions unrelated to the loan will be documented.

Individual transfers to the account of the person making the payment can also work well if they are made in advance and clearly identified. Another alternative is for one person to pay initially and for the other to reimburse their share. The latter requires greater discipline, as the subsequent reimbursement may be delayed or confused with other expenses.

Whichever system is used, it is advisable to check regularly that the debit has been made correctly, that no overdraft has occurred and that the internal record matches the statements. Simplicity is usually an advantage: the more manual steps the process has, the more likely it is to fail.

What to do in the event of delays and unexpected events

The agreement should include a brief protocol for difficult months. For example, notifying the other person as soon as someone expects they will not be able to contribute the usual amount, explaining whether the difficulty is temporary or prolonged and specifying which options will be reviewed. Giving notice before the due date provides more room to act than doing so afterwards.

The parties may provide for internal alternatives, such as using a previously agreed joint fund, temporarily advancing an amount or adjusting other shared expenses. These solutions should be recorded: amount advanced, date, intended method of offset and terms for reviewing the arrangement. It should not be assumed that an advance automatically means waiving reimbursement.

If the difficulty affects payment to the institution, it is important to consult in advance the channels and options it indicates in the contract or through its customer service. Ignoring communications or allowing due dates to pass usually reduces the ability to respond.

Early repayments and instalment changes

An early payment may reduce the outstanding principal or have other effects depending on the applicable terms. Before contributing additional money, both people should review the documentation and agree on the goal: reducing the term, adjusting the instalment if the contract allows it, or simply reducing the outstanding debt.

It is also advisable to define how an unequal contribution will be recognised internally. If one person makes a larger extraordinary repayment, differing interpretations may arise regarding the balance between the two. Recording the source of the funds, the intended effect and whether there will be subsequent offset helps prevent a useful financial decision from causing disagreement.

Changes requested from the institution, such as an amendment to terms or to the parties involved, require their own procedures and acceptance where applicable. The private agreement can prepare the conversation, but it does not replace the necessary formal steps.

Change scenarios and an exit plan

The test of an agreement comes when the situation changes. Moving home, the end of cohabitation, job loss or a disagreement do not by themselves eliminate the obligations agreed with the institution. For that reason, it is reasonable to discuss these scenarios while the relationship is stable.

An exit plan may answer questions such as these:

  1. Who will continue to use or benefit from the financed asset, if there is one?
  2. How will the instalments be divided while a solution is being sought?
  3. What timeframe will there be to review alternatives, and what information will be used to decide?
  4. What will happen to outstanding internal advances?
  5. What steps will need to be discussed or completed with the institution?
  6. How will documents and proof of payment be retained?

It will not always be possible to anticipate the final solution, but establishing a procedure reduces rushed decisions. In the event of a significant dispute, mediation or professional advice appropriate to the case may help analyse the options available.

Checklist for reviewing the agreement

Checklist for reviewing the agreement — visual guide by CalculaPréstamo

Reviewing the payment agreement for a shared loan from time to time makes it possible to adapt it to reality. A review may coincide with a change in income, a variation in expenses, an early repayment or a change in living arrangements.

  • Are the instalment, due date and debit account still correct?
  • Do actual contributions match the agreed criterion?
  • Are there advances or reimbursements still to be documented?
  • Are relevant statements, receipts and communications being kept?
  • Are associated expenses clearly defined?
  • Is the emergency fund, if one exists, still sufficient for the stated purpose?
  • Do both people know the procedure in the event of a delay or major change?

The usefulness of this type of agreement depends less on its length than on its consistent use. Clear contributions, organised evidence and early conversations can make a shared debt more manageable without changing the obligations stated in the financing contract.

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