SARON or fixed-rate mortgage?
The right choice

Choosing between and is one of the most important decisions when financing a property.
Both differ fundamentally—and have clear advantages and disadvantages.

The right choice depends mainly on your risk tolerance, your financial situation, current interest rates, and your assessment of future interest rate trends.

An antique bronze beam scale in balance. In one pan is a small white model house, and in the other a stack of coins. On a rustic wooden table.

In a nutshell
SARON or Fixed-rate mortgage?

The SARON mortgage is flexible and usually more affordable, but is subject to fluctuating interest rates.

A fixed-rate mortgage offers a fixed interest rate and maximum planning security, but is less flexible as a result.

The key question
Security or flexibility?

The choice often comes down to one key question: If you want maximum security, a fixed-rate mortgage is the right choice—but if you want maximum flexibility and the chance for lower overall costs, the SARON mortgage is the better option.

Comparison of fixed-rate and SARON mortgages

Pros and cons
What you need to know

Advantages of a fixed-rate mortgage

  • Planning security
    Main advantage

    You know exactly what costs you’ll face over the years.

  • Protection against rising interest rates

    If interest rates rise, your costs stay the same.

  • Easy to compare

    Quotes are transparent and easy to compare.

  • Low effort

    Once it’s all set up, you won’t have to worry about your Mortgage for a long time.

Disadvantages of a fixed-rate mortgage

  • Limited flexibility
    Main disadvantage

    An early exit is often costly.

  • Repayment penalty

    Can quickly get very expensive

  • No benefit when interest rates fall

    You are not benefiting from falling interest rates.

Benefits of the SARON Mortgage

  • High flexibility
    Main advantage

    With a short notice period (for eligible providers).

  • Often more affordable in the long run

    Historically, SARON models have been cheaper over long periods of time.

  • Transparent interest rate setting

    Based on actual market transactions.

  • Low effort

    Once it’s all set up, you won’t have to worry about your Mortgage for a long time.

Disadvantages of the SARON Mortgage

  • Fluctuating interest rates

    Interest costs cannot be planned in advance.

  • Risks associated with rising interest rates

    Interest rates can rise quickly.

  • Higher requirements for customers

    To qualify for the SARON Mortgage, you need financial reserves and a certain willingness to take risks.

Common mistake
“I’ll start with SARON and switch later”

This strategy sounds logical—but it’s often problematic.

This is because interest rates often rise quickly, the optimal time to switch is hard to predict, and you are often bound by framework agreements—making it nearly impossible to switch providers and thus experience genuine interest rate competition.

The episode
Changing mortgage loan models often results in unfavorable terms.

Video

Video on the topic

Could your mortgage interest rates double in a short period of time? In this video, Florian Schubiger uses historical data from the past 50 years to show you just how much SARON mortgages can actually fluctuate—and why many people underestimate this risk.

@Mortgage
Florian Schubiger
Founder of Mortgage.ch

Saron Fixed-rate Mortgage 1

SARON Alternative
Fixed-rate mortgage with an exit option

Less well-known but particularly interesting: There are providers that allow you to exit a 10-year fixed-rate mortgage for free or at a very low cost. Such are particularly common among and

This combination of security and flexibility is a major advantage. You’ll find exactly these kinds of offers on HYPOTHEKE.ch.

In the Mix
Combination of the two models

Some homeowners opt for a combination. This strategy can make sense, but it also has many drawbacks.

The problem: Flexibility is limited, switching providers is often not possible, and when it comes to Extension, the is correspondingly weaker. In addition, a margin increase is possible for the SARON Mortgage during the Term.

A clear strategy is better, or—if possible—spreading the debt across multiple properties. Having a staggered Mortgage comes with many disadvantages.

Read more here: Should you opt for a stepped-rate Mortgage or not?

Amortization
Note the differences

With a fixed-rate mortgage, is usually only possible by contractual agreement.Amortization is often more flexible with a SARON Mortgage—depending on the contract, but no later than the end of the

For both Mortgage loan models, you can choose to or .

Learn more here: Direct or indirect amortization

Profile: Daniel Bosch

Choosing the right Mortgage loan model is crucial when taking out a mortgage. We help you make this important decision—completely impartially and independently.

Daniel Bosch
Mortgage expert

Conclusion
SARON or fixed-rate mortgage?

A fixed-rate mortgage is ideal for risk-averse individuals and is particularly suitable when interest rates are rising. The SARON mortgage is ideal for anyone who values flexibility and is often the more affordable solution in the long term.

The best solution is always the one that best suits your personal situation and needs.

FAQ: SARON or fixed-rate mortgage?

Frequently Asked Questions
Answers to help with this difficult decision

A fixed-rate mortgage has a fixed interest rate over a specific Term.
A SARON mortgage has variable interest rates that are continuously adjusted based on the money market.

Learn more about different mortgage terms here
Fixed-rate mortgages | 5-year fixed-rate mortgage  | 10-year fixed-rate mortgage | Saron mortgage

A fixed-rate mortgage is particularly worthwhile when interest rates are rising, when planning security is important, or when risk tolerance is low.

A SARON mortgage is suitable for individuals with financial reserves and a willingness to take risks who expect interest rates to remain stable or decline.

A combination is possible, but often has disadvantages:
   • Less flexibility 
   • More difficult to switch providers 
   • Limited negotiation options 
Staggering mortgage payments can also have disadvantages. Read more here: Staggering mortgage payments

Learn more here: Mortgage tiering

Interest rates typically rise relatively quickly, causing financing costs to increase significantly in a short period of time. The SARON interest rate tracks the SNB’s key interest rate on a one-to-one basis.

The right choice depends on your risk tolerance, your financial situation, and your assessment of interest rate trends. Comparing different providers is crucial to finding the best solution.

Use HYPOTHEKE.ch for this.

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