The planned loan instalment for the house appears affordable on its own. At the same time, there is an ongoing car finance, another instalment contract and perhaps a larger payment due later. What matters then is not only the new instalment, but the combined timing of all obligations. This article helps prepare a private residential finance in Germany. The calculation examples are chosen freely; they are neither a creditworthiness decision nor a recommendation to refinance.
Record each obligation with its own timeline
First collect the existing contracts and the current status. For each case note the regular payment, the intended end and, if applicable, any larger final payment. A current instalment and a merely estimated outstanding total serve different purposes. For concrete planning use verifiable documents rather than memories from the original contract signing.
Also record whether a payment is shared with another person and on which actually clarified basis you reckon with their contribution. The article does not assess liability or the effectiveness of private compensation agreements. For your own payment plan it should, however, be apparent which amounts you would have to make up organisationally and financially if a contribution were not forthcoming.
View the first months after purchase separately
An existing finance agreement may end soon. That does not automatically mean the new residential financing has the same free capacity from the start. Lay the months with parallel payments visibly on top of each other. A later improved situation does not automatically cover a present due date.
Our editorial recommendation: Plan at least the actually decisive phases separately. For example, an initial phase with several instalments, a later phase after the end of a contract and a point in time with a larger one‑off payment. The observation period is determined by your real contracts, not by an invented fixed number of months here.
Example: The final payment does not disappear with the monthly instalment
A fictional household plans a new housing loan instalment of 1.100 euros. In addition, there are initially an instalment of 280 euros and another of 120 euros. Together that is 1.500 euros per month, before other housing and living costs are taken into account.
Later the 280 euro instalment ends. At that time, however, the assumed contract also provides for a final payment of 4.000 euros. Afterwards the ongoing example instalments fall to 1.220 euros. A concrete available solution must nevertheless be planned for the final payment. The calculation does not assess either the contract or a possible follow‑up financing. It shows the difference between a permanently ceasing payment and a merely postponed burden.
Bank assessment and personal household decision complement each other
§ 505a BGB contains the obligation to check creditworthiness for consumer loans; for immovable consumer loans what matters is the probable contractual fulfilment of the obligations. § 505b requires appropriate information for this, among other things on income, expenses and other financial circumstances and their proper verification. [PRÜFUNG] [GRUNDLAGE]
Therefore disclose existing obligations transparently in the financing discussion and ask which proofs are required for them. Personal planning remains your own task, however. You should be able to explain how the parallel payments fit into your actual everyday life, which amounts are already needed elsewhere and which important assumptions are not yet confirmed.
A possible replacement is a new decision
If an existing financing is to be replaced for relief, first check its concrete terms and the new overall calculation. A smaller monthly instalment can be associated with a different term or additional costs. This article does not assert any particular right of termination or a free replacement route for any existing contract.
Compare a change therefore on the basis of the actually available offers: Which payments cease, which arise anew, when and in what amount? An expected sale proceeds or a not yet approved new loan is, until clarified, not a secured discharge of the old obligation.
Take a clear test bench rather than a prettified single instalment
Before deciding to buy you should be able to present your combined payment plan in an understandable form. Unclarified final payments and unconfirmed reliefs remain visible. An existing reserve is not simultaneously used multiple times to solve different bottlenecks.
This makes it possible to discuss specifically whether property, financing and other contracts fit together or whether the purchase framework needs to be adjusted. Decisive is the actually sustainable sequence of payments, not the friendliest single figure in a financing offer.