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Saron or fixed-rate mortgage

Spoilt for choice: variable or fixed mortgage? A comprehensive analysis of the pros and cons with valuable tips and tricks to help you make your decision.

Buying a property is one of the biggest investments most people make in their lives. When deciding which type of mortgage to choose, there are many factors to consider. One of the most important decisions you have to make is whether to opt for a Saron mortgage or a fixed-rate mortgage. Our article will help you make the right decision between the two types of mortgage.

Comparison of the key features of the two types of mortgage

Saron

  • Interest rate is variable
  • Based on the Swiss National Bank’s key interest rate
  • Short-term financing with terms ranging from 2 to 5 years

fixed-rate mortgage

  • Interest rate is fixed
  • Market-independent interest rate
  • Terms of between 2 and 10 years are common.

Was ist eine Saron-Hypothek?

Variabler Zinssatz

Die Saron-Hypothek ist eine Hypothek mit einem variablen Zinssatz, der täglich ändern kann. Als Basis für den Saron (Swiss Average Overnight Rate) dient der Leitzins der Schweizerischen Nationalbank (SNB).

Kürzere Laufzeit

Saron-Hypotheken laufen üblicherweise 2 bis 5 Jahre. Über diese Laufzeit hinweg bleibt der Hypothekarbetrag unverändert, ausser es wurden direkte Amortisationen oder anderweitige (Teil-)Rückzahlungen vertraglich festgelegt.

Geldmarkt als Basis

Saron Hypotheken aller Laufzeiten werden unter dem Begriff Geldmarkthypotheken geführt, da es sich eher um kurzfristige Finanzierungen handelt die auf Basis des Geldmarktes verhandelt werden.

Saron mortgage notice period

The term of the Saron mortgage is regulated by a framework agreement covering the agreed duration. Even if this framework agreement has a fixed term, there is usually still a notice period for Saron mortgages. This is usually six months. In order to comply with this notice period, you must submit an official notice of termination to your mortgage lender six months before the framework agreement expires. This ensures that you can compare the various offers after the Saron mortgage expires and, depending on interest rate developments and offers, even change providers if necessary.

Saron mortgage or Libor mortgage?

Libor was abolished at the end of 2021. Until then, Libor had been the basis for money market mortgages (Libor stood for ‘London Interbank Offered Rate’). The Saron mortgage was therefore known as the Libor mortgage for many years. Whether Libor or Saron, both types of mortgage have interest rates that change daily. Libor and Saron also have very similar interest rates. If you want to find out about the historical development of the Saron interest rate, you can therefore use Libor as a good reference value.

Saron interest rate development

Looking at this chart alone, one might get the impression that interest rates are rising steadily. That is why it is important to look at the long-term picture. The chart of the Libor (predecessor of the Saron) since 2002 helps here:

The advantages and disadvantages of a Saron mortgage

Advantages of a Saron mortgage

  • The interest rate on a Saron mortgage is usually lower than on a fixed-rate mortgage.
  • Interest rates can change daily, which leads to lower interest rates when interest rates fall.
  • Saron mortgages offer flexibility, as borrowers can generally exit at any time without incurring an early repayment penalty.
  • Advantageous if the borrower plans to sell the property in the foreseeable future
  • Many providers allow you to switch to a longer-term fixed-rate mortgage during the term of the Saron mortgage.

Disadvantages of a Saron mortgage

  • The interest rate on a Saron mortgage is variable, so the exact interest costs are not known in advance.
  • Borrowers can calculate monthly costs less accurately
  • Saron mortgage is a short-term financing option, not available with long or ultra-long terms.
  • Mortgage holders have to deal with restructuring their mortgage every few years.
  • Compared to a fixed-rate mortgage, the administrative costs for the mortgage institution are higher, resulting in slightly higher margins.

What is a fixed-rate mortgage?

Fixed interest rate

A fixed-rate mortgage is a mortgage with a fixed interest rate, a fixed term and a fixed, i.e. constant, mortgage amount. Contractually agreed direct amortisations and other (partial) repayments are excluded.

Market-independent

The interest rate remains unchanged throughout the term of the mortgage, regardless of fluctuations in the general interest rate level. Normally, the longer the contractually agreed term, the higher the interest rate.

Long terms possible

Fixed-rate mortgages are available with terms ranging from 2 to 10 years. Upon request, some mortgage institutions offer longer terms, such as 15, 20 or even 25 years. The most popular mortgage in Switzerland at present is the 10-year fixed-rate mortgage.

The advantages and disadvantages of a fixed-rate mortgage

Advantages of a fixed-rate mortgage

  • Interest rate remains fixed throughout the entire term
  • Interest costs remain unchanged, even with rising interest rates
  • Borrowers know exactly how much they have to pay each month, which makes planning and budgeting easier.
  • Fixed-rate mortgages are available with long and very long terms, in some cases up to 20 or 25 years.
  • Long-term commitment significantly reduces administrative effort
  • Mortgage borrowers will not have to worry about mortgage interest rates again until the distant future.

Disadvantages of a fixed-rate mortgage

  • The interest rate on a fixed-rate mortgage is usually higher than on a Saron mortgage, even for short-term fixed-rate mortgages.
  • Mortgage borrowers cannot benefit from a fall in general interest rates, as interest rates are fixed.
  • Early termination of a fixed-rate mortgage can be expensive.
  • When a fixed-rate mortgage agreement is terminated, an early repayment penalty must be paid.
  • The amount of the early repayment penalty depends on the remaining term, the difference to the current interest rate and the mortgage amount.
  • The compensation can amount to several thousand or even tens of thousands of pounds.

Tips & Tricks

When deciding between a Saron mortgage and a fixed-rate mortgage, there are a few tips and tricks that borrowers should consider.

First, borrowers should consider their personal financial circumstances and needs. If they have a limited income or need or want to plan their monthly payments carefully, a fixed-rate mortgage is the better choice. However, if they prefer flexibility and the opportunity to benefit from lower and/or falling interest rates, a Saron mortgage may be the better choice. If the general interest rate level is at historic lows, it makes sense to lock in these favourable interest rates for the long term.

In the case of fixed-rate mortgages, there are some providers who offer to switch to an even longer-term contract free of charge during the term. Even in the event of early termination, there are various mortgage institutions that reduce the early repayment penalty to a lump sum (e.g. only a few thousand pounds).

Some providers allow you to switch to a fixed-rate mortgage during the term of the framework agreement for Saron mortgages. However, this fixed-rate mortgage must then run for at least as long as the remaining term of the Saron mortgage.

If you are planning to make large partial repayments on your mortgage, you can either take out a very short-term fixed-rate mortgage or a Saron mortgage for this amount, while choosing a long-term fixed-rate mortgage for the remaining mortgage amount.

Borrowers should definitely compare the interest rates and terms offered by different lenders, or have them compared, in order to find the best deal. Some lenders may offer lower interest rates or better terms for a Saron mortgage, while others may offer better terms for a fixed-rate mortgage.

Finally, borrowers should always consider the long-term implications of their decision. A Saron mortgage may be more attractive in the initial phase, but if interest rates rise, monthly payments can quickly increase and place a strain on the borrower. A fixed-rate mortgage, on the other hand, offers long-term planning security, but usually at a higher interest rate. It is therefore important to weigh up the advantages and disadvantages of both options and make a decision that best suits your individual financial needs.

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Frequently asked questions

The most common customer questions about Saron or fixed-rate mortgages and our answers to them.

Those on a tight budget would be better off switching to a fixed-rate mortgage, as the agreed interest rates are fixed. Over a period of around six months, the Saron mortgage will become more expensive than it is today.

The Saron mortgage rate is likely to continue rising throughout 2023, after which the SNB will probably not raise interest rates any further for the time being. However, there is no guarantee of this.

At the beginning of May 2023, the Saron stood at 1.41%, which is slightly lower than the SNB key interest rate of 1.50%. To find out the effective customer interest rate, the individual margin of the mortgage institution must be added to this 1.41%. Depending on the provider and negotiating skills, the margin ranges between 0.5% and 1.25% p.a.

The SNB’s goal is medium-term price stability. If the current interest rate hikes (implemented and announced/expected) are not sufficient to counteract inflationary pressure in Switzerland, further interest rate hikes may be necessary, bringing the Saron well above 2% and possibly even towards 3%.

If your budget can cope with one or two further interest rate hikes by the SNB, a Saron mortgage may still be a sensible and affordable financing option. If inflationary pressure in Switzerland remains high, even higher SNB key interest rates are to be expected. A Saron mortgage is less advisable in such an environment.

Most mortgage providers offer the option of switching to a fixed-rate mortgage from the same provider during the term of the Saron framework agreement. The term of the new fixed-rate mortgage must be at least equal to the remaining term of the Saron mortgage.

In the medium term, interest rates are expected to stabilise. As soon as inflationary pressure eases, mortgage interest rates in Switzerland will stop rising or even fall slightly.

Saron mortgage or fixed-rate mortgage – an interest rate comparison

After the SNB raised its key interest rate in several steps starting in 2022, it lowered it again in spring 2024. The Saron rose and fell in line with the SNB key interest rate.

Saron

The Saron currently stands at 1.45%. The cheapest Saron mortgage is therefore around 2% p.a.

Fixed-rate mortgage

  • 5 years: from 1.71%
  • 10 years: from 1.82%
  • 15 years: from 2.11%

Conclusion

Focusing purely on the current interest rate, medium to long-term fixed-rate mortgages are more attractive than Saron mortgages. However, it should be noted that further interest rate cuts could be expected with Saron mortgages. The market expects one or two further interest rate cuts of 0.25% each by the end of 2024 and H1 2025. This would mean that the interest rate for a Saron mortgage in mid-2025 would be around 1%, making it cheaper than most fixed-rate mortgages.