Why this number matters
A quarter of a percentage point looks harmless on a rate table. On a mortgage, it has rent-money energy. FI's 8 May update says the spread between the highest and lowest average variable mortgage rates among the major banks was 0.26 percentage points in March. In January, the same spread was 0.58 percentage points, worth more than SEK 11,000 a year on a SEK 2 million loan.
That does not mean every borrower can collect the whole spread. The point is narrower and more useful: bank averages move, and your own rate can drift away from what similar borrowers are getting. The newest FI numbers give Swedish mortgage holders a fresh reference point for the next bank conversation.
List rate vs average rate
The list rate is the advertised starting point. The average rate is what the lender's customers actually received for new, renewed, renegotiated, or extended loans during the month. FI says average rates are a better benchmark than list rates when comparing banks or talking to your own lender.
Konsumenternas makes the same distinction in its mortgage-rate comparison. Its tables show both advertised rates and average rates, and its page says lenders have five business days to publish each month's average rates. That delay matters when you are comparing a current offer with the latest public data.
The fixed-rate twist
FI also saw a quick shift in borrower behavior. In February, 17.5 percent of mortgage customers in the FI sample had a fixed rate. In March, the share rose to 33 percent.
That is the human part of the rate table. When the world feels shaky, a fixed monthly cost can look more valuable even if it is not always the cheapest route. A lower rate is not the only variable; budget certainty has a price too.
What to check before calling the bank
- Your actual rate: check the mortgage notice or internet bank, not an old memory of the rate.
- Your binding period: a three-month rate is often called variable, while longer fixed periods can have break-cost rules if the loan is repaid early.
- Comparable averages: compare your rate with recent average rates for the same kind of binding period.
- Loan-to-value and household details: banks price risk differently, so the average is a reference point, not a promise.
- All relationship discounts: savings, salary account, insurance, or other bundles can make an offer look cleaner or messier than the headline rate.
Bottom line
The useful move is not to chase the lowest number on the internet. It is to know whether your current offer still makes sense against fresh average-rate data, then ask the bank to explain the gap in plain kronor.
For a SEK 2 million mortgage, FI's March spread shows that 0.26 percentage points can be more than SEK 5,000 a year before tax relief. That is big enough to deserve a calendar reminder, especially when the binding period is close to renewal.
Source frame: 8 May 2026 mortgage-rate spread, March 2026 average variable rate, 0.26 percentage-point spread, SEK 2 million cost example, January spread, fixed-rate share, and average-rate interpretation from Finansinspektionen's 8 May 2026 mortgage-rate update and FI's mortgage-rate statistics page; comparison-table framing, list-rate and average-rate definitions, publication timing, and fixed/variable-rate context from Konsumenternas mortgage-rate comparison. Accessed 12 May 2026. This is educational mortgage context, not personalized financial, tax, legal, or investment advice.