Mortgage calculator
Work out the monthly cost of a mortgage in Sweden: interest, amortisation and interest deduction, under the rules in force since 1 April 2026.
Work out your mortgage
Type the rate the bank offers you, or drag the slider to see what a higher rate costs. The calculator shows the first month, before and after the interest deduction.
The rules since 1 April 2026
A mortgage may be at most 90% of the price, so the down payment is at least 10%. An existing mortgage that is increased may be at most 80%.
Amortisation is 2% of the loan a year above 70% loan-to-value and 1% above 50%. The stricter requirement for loans above 4.5 times gross income no longer applies.
Source: lag (2026:226) om begränsning av bostadskrediter; Skatteverket on ränteavdrag. Checked 2026-10-13.
Down payment and amortisation for a SEK 3,000,000 home
The loan-to-value cap is 90%, so the smallest down payment on a SEK 3,000,000 home is SEK 300,000.
With 30% down, the loan-to-value is exactly 70%. The 2% requirement applies only above 70%, so amortisation is 1%. With half the price as a down payment, the loan-to-value is 50% and there is no amortisation requirement.
In the first month, the smallest down payment costs SEK 8,000 more than paying half: SEK 4,500 in amortisation, which reduces the loan, and SEK 3,500 in interest.
| Down payment | SEK 300,000 | SEK 900,000 | SEK 1,500,000 |
|---|---|---|---|
| Mortgage | SEK 2,700,000 | SEK 2,100,000 | SEK 1,500,000 |
| Loan-to-value | 90% | 70% | 50% |
| Amortisation a year | 2% | 1% | No requirement |
| First month | SEK 12,375 | SEK 7,875 | SEK 4,375 |
| After deduction | SEK 10,013 | SEK 6,038 | SEK 3,063 |
At 3.5% interest.
The monthly cost if the rate goes up
On a SEK 2,550,000 mortgage, the monthly cost before the interest deduction rises by SEK 2,125 if the rate goes up one percentage point, and by SEK 4,250 if it goes up two.
After the deduction, the increase is SEK 1,598 and SEK 3,277 a month. Amortisation does not change, because it depends on the loan and the loan-to-value, not on the rate.
| Rate | Per month | After deduction |
|---|---|---|
| 3.5% | SEK 11,688 | SEK 9,456 |
| 4.5% | SEK 13,813 | SEK 11,054 |
| 5.5% | SEK 15,938 | SEK 12,733 |
SEK 2,550,000 mortgage, first month.
How the interest deduction works
You can deduct 30% of the interest on your mortgage, up to SEK 100,000 of interest a year. On interest above SEK 100,000 the deduction is 21%. The bank charges the full interest, and the deduction lowers your tax.
With the calculator's starting values, the interest is SEK 89,250 a year. All of it is below the limit, so the deduction is 30% of it: SEK 26,775 a year, or SEK 2,231 a month.
At 5.5% on the same loan, the interest passes the limit, and the deduction on the part above it is 21%.
| At 5.5% interest | A year |
|---|---|
| Interest | SEK 140,250 |
| 30% of SEK 100,000 | SEK 30,000 |
| 21% of SEK 40,250 | SEK 8,453 |
| Interest deduction | SEK 38,453 |
| Deduction per month | SEK 3,204 |
Common questions about mortgages
How big a down payment do I need?
At least 10% of the price. A mortgage may be at most 90% of the price when it is granted, under the Swedish act on limiting housing credit (lag 2026:226) in force since 1 April 2026.
How much must I amortise?
2% of the loan a year if the loan-to-value is above 70%, and 1% a year if it is above 50%. Below 50% there is no requirement. The percentage is of the whole loan amount. The stricter requirement for loans above 4.5 times income was removed on 1 April 2026.
What is loan-to-value?
Loan-to-value (belåningsgrad) is the mortgage as a percentage of the price of the home. A SEK 2,550,000 mortgage on a SEK 3,000,000 home gives a loan-to-value of 85%. It decides how much you must amortise.
Does the interest deduction apply to all loans?
No. The deduction for interest on unsecured loans was removed from 1 January 2026, so interest on personal loans, credit cards and quick loans gives no deduction. Mortgages and other secured loans are not affected.
Why does the monthly cost fall over time?
Interest is charged on what you still owe. As you amortise, the loan gets smaller and so does the interest. The calculator shows the first month.
What is a stress rate?
The stress rate (kalkylränta) is the higher rate the bank uses when it checks whether you can afford the loan. It shows whether you could keep paying if rates rose. Each bank sets its own, and it is often higher than the rate you are offered.
How does the bank count my income?
The bank starts from your income after tax and wants to see income you can document. It subtracts housing, other loans and living costs, and what is left must cover the mortgage at the bank's stress rate. The mortgage calculator does not use your income. You can work out what is left each month in the calculator for how much you can borrow.
Can I get a mortgage with a payment remark?
There is no general answer. Each bank makes its own credit assessment and weighs the payment remark (betalningsanmärkning), your income and your other debts. Kreddo does not compare mortgages and cannot say how a bank will assess your application.
Is the result an offer?
No. It is a calculation from the figures you enter and the rules on amortisation and interest deduction. The bank decides the rate and how much you can borrow after its credit assessment. Kreddo is a comparison service and neither lends nor arranges mortgages.