Mortgage costs: how to assess them

Mortgage costs: a comprehensive view

When acquiring a property, a mortgage represents a major part of the financing. However, its cost is not limited to the borrowed amount alone.

It includes several components that need to be considered together in order to assess the real cost of financing over time.

A comprehensive approach helps anticipate how these costs will affect your financial situation.

Mortgage interest

Interest payments represent the main cost of a mortgage.

They correspond to:

• the lender’s remuneration for the capital provided,

• a cost that varies depending on market conditions and the type of mortgage chosen.

The level of interest rates has a direct impact on:

• overall financing costs,

• and your ability to sustain the loan.

Loan amortisation

In addition to interest, part of the loan may be amortised, meaning it is gradually repaid over time.

This repayment allows you to:

• reduce the outstanding debt,

• lower interest costs in the long term.

Depending on the financing structure, amortisation may:

• apply only to a portion of the mortgage,

• or be organised in different ways.

Property maintenance costs

The cost of property financing is not limited to the debt itself.

It also includes property-related expenses, such as:

• regular maintenance,

• repairs,

• ongoing ownership costs.

These elements must be considered to avoid underestimating the true cost of the project.

The concept of theoretical cost

In Switzerland, financial institutions often use a theoretical cost approach to assess the sustainability of financing.

This approach consists of:

• applying prudent assumptions regarding interest rates,

• including all housing-related costs.

The objective is to ensure that the financing remains affordable even under less favourable conditions.

The impact of mortgage type

The choice of mortgage type also influences costs:

• some solutions offer cost stability,

• others provide greater flexibility,

• each comes with its own advantages and constraints.

The right choice depends on your situation, your objectives and your risk tolerance.

Taking a long-term perspective

Assessing mortgage costs requires a long-term view.

It is important to consider:

• potential changes in interest rates,

• the expected holding period of the property,

• changes in your personal situation.

This perspective helps avoid a purely short-term approach to financing decisions.

Integrating costs into your overall strategy

Mortgage costs should be analysed in relation to:

• your borrowing capacity,

• your equity,

• your overall financial situation.

A global approach helps structure a financing plan that is both balanced and aligned with your objectives.