CAP Mortgage
Interest Rate Cap with Fees
The CAP mortgage combines the advantages of a with a certain level of protection: an interest rate cap. But does this “interest rate insurance” really make sense—or will you end up paying more than necessary?

Definition
CAP Mortgage
A CAP mortgage is a SARON mortgage with a fixed interest rate cap. This means you benefit from low, variable interest rates while also being protected against sharp increases in interest rates.
Important
Flexibility like a SARON Mortgage—with a built-in safety net. If it sounds too good to be true, there’s often a catch. That also applies to the CAP Mortgage.
Mechanism
How does a CAP Mortgage work?
The CAP mortgage consists of two components: a variable-rate SARON mortgage and interest rate protection via a financial derivative known as a “cap.” Put simply, the protection kicks in as soon as interest rates exceed a predefined upper limit—the excess interest is then offset by the derivative.
This protection isn’t free—it comes at a cost.
Pros and Cons
What You Need to Know
Benefits of a cap mortgage
Disadvantages of a cap mortgage
Target Audience
Who is a CAP Mortgage suitable for?
A CAP mortgage may be a good option for:
- People with a moderate risk tolerance
- Borrowers who want to hedge against sharply rising interest rates
- Homeowners who want flexibility but do not want to completely sacrifice security
Requirements
You are willing to pay for the insurance.


At first glance, a CAP mortgage seems appealing. But as is often the case, if something sounds too good to be true, there’s usually a catch. With a CAP mortgage, the catches are the costs, the lack of transparency, and the lower level of competition compared to more common Mortgage loan models.»
Bernard Raja
Mortgage expert at HYPOTHEKE.ch
Alternatives
Some better and more affordable options
In many cases, we believe there are significantly better solutions than a CAP Mortgage. With the right strategy, you can often achieve the same results as with a CAP Mortgage—but at a lower cost, with greater flexibility, and with more transparency.
Reine
Fixed-rate mortgage
Maximum planning certainty. No surprises.
Combination
SARON / Fixed-rate mortgage
Partly flexible, partly secured. Often more affordable and transparent
SARON Mortgage
+ financial reserve
Set aside the difference from fixed-rate loans. React when interest rates rise
Conclusion
CAP Mortgage – Useful or Superfluous?
The CAP mortgage offers protection against sharp rises in interest rates and flexible interest rate terms, but it also entails additional costs, less transparency, and a more complex structure.
Frequently Asked Questions
Answers about the CAP Mortgage
The CAP mortgage is usually based on a variable reference rate (e.g., SARON) plus a margin. In addition, a maximum interest rate (cap) is set, which you will never exceed. The insurance is not free; it is usually factored directly into the interest rate.
"Cap" refers to the interest rate cap. No matter how much interest rates rise, your interest rate will remain below this set limit.
No. CAP mortgages aren’t automatically cheaper. It depends on interest rate trends and the terms of the Mortgage. The protection is expensive, and in many cases, a Fixed-rate mortgage is the better and more cost-effective option for security-conscious homeowners.
The cap amount is set at the time the agreement is signed and depends on the provider as well as the current interest rate environment. The closer the cap is to the current interest rate level, the more expensive the protection becomes.
The costs depend heavily on the interest rate cap, the Term of the mortgage, and current interest rates. As a general rule, the lower the cap and the longer the Term of the mortgage, the more expensive the protection becomes.
The costs are often hidden in the Interest rate or charged indirectly.
Important to Know
Insurance is expensive, and in most cases, homeowners who are “worried” about rising interest rates are better off with a Fixed-rate mortgage.
Get a mortgage in 3 steps
No need to make a tedious trip to the bank
1. Assess the situation
Accessible at any time, without interruption
2. Compare offers
Try it 100% anonymously and for free
3. Take out a Mortgage
Instantly and conveniently from the comfort of your couch
Get started now and get your final offer in 5 minutes