Effective Interest Rate vs. Nominal Interest Rate: The Difference Explained
When comparing loans in Switzerland, borrowers regularly encounter two terms: nominal interest rate and effective interest rate. Many people confuse them or do not fully understand the difference. This can be costly — because only the effective interest rate is decisive for the actual cost of a loan.
What Is the Nominal Interest Rate?
The nominal interest rate (also: borrowing rate) is the pure interest rate on the outstanding loan amount. It indicates what percentage per year is charged in interest on the remaining outstanding balance.
Example: With a nominal interest rate of 6% p.a. and a loan amount of CHF 20,000, the interest in the first year would be CHF 1,200 — provided the entire amount remains outstanding for the whole year.
However, the nominal interest rate does not take into account additional costs such as: - Processing fees - Account management fees - Insurance premiums (if taken out) - Disbursement fees
What Is the Effective Interest Rate?
The effective interest rate (also: APR — Annual Percentage Rate) is the comprehensive interest rate that takes into account all costs of a loan — including all fees and ancillary costs. It enables a genuine comparison between different loan offers.
In Switzerland, the lender is obliged under the KKG (Consumer Credit Act) to state the effective interest rate. The legal maximum rate currently stands at 10% effective.
Why Is the Effective Rate Decisive?
Imagine Bank A offers a loan at 5% nominal interest but charges an annual administration fee of CHF 200. Bank B offers 5.5% nominal interest with no fees. Which offer is cheaper?
Without the effective interest rate, this is not immediately apparent. But with the effective rate, it is: Bank B could be cheaper despite the higher nominal rate.
Calculation Example: CHF 20,000 over 48 Months
Suppose you take out a [personal loan](/kredit-beantragen/privatkredit) at Cashare for CHF 20,000 with a term of 48 months.
Scenario A – Cashare, credit class B: - Nominal rate: approx. 5.5% p.a. - Effective rate: approx. 5.65% p.a. - Monthly instalment: approx. CHF 465 - Total costs (interest): approx. CHF 2,320
Scenario B – Typical bank: - Nominal rate: approx. 8.0% p.a. - Processing fee: CHF 300 - Effective rate: approx. 9.2% p.a. - Monthly instalment: approx. CHF 488 - Total costs (interest + fees): approx. CHF 3,724
Saving with Cashare: approx. CHF 1,400 over the term.
How Is the Effective Rate Calculated?
The calculation of the effective rate takes into account: 1. The nominal interest rate 2. The payment frequency (monthly = 12 periods per year) 3. All fees incurred 4. The timing of disbursement and repayment
The formula is complex and is determined in practice using financial calculators. What is important for you as a borrower: always rely on the stated effective interest rate, not the nominal rate.
Conclusion: Always Compare Effective Rates
The effective rate is the only reliable basis for comparison when evaluating loan offers. At Cashare, the effective rate is displayed transparently — with no hidden fees or surprises.