Loan Calculator

Understanding loan costs

Every loan has two costs: the principal you borrow and the interest you pay for borrowing it. The total interest depends on three factors: loan amount, interest rate, and loan term.

A small change in interest rate can mean hundreds of thousands of kronor over the life of a mortgage. This calculator helps you see that impact clearly.

How the loan calculator works

Enter your loan amount, interest rate, and term. Choose between two repayment methods:

• Annuity — fixed monthly payment throughout the loan term. The split between interest and amortization shifts over time.
• Linear — fixed amortization each month, with decreasing interest. Higher payments initially, lower over time.

Annuity vs. linear amortization

| | Annuity | Linear |

|---|---|---|

| Monthly payment | Fixed | Decreasing |

| Total interest paid | Higher | Lower |

| Cash flow predictability | High | Medium |

| Best for | Budget stability | Minimizing total cost |

With linear amortization, you pay less total interest because you reduce the principal faster. With annuity, you get predictable payments — easier to budget around.

Swedish mortgage context

For reference when using this calculator:

• Average Swedish mortgage rate (2024–2025): 3.5–5.0% (variable), 3.0–4.5% (3–5 year fixed)
• Typical loan-to-value: up to 85% (15% minimum down payment required by law)
• Amortization requirements: Swedish regulations require mandatory amortization — typically 1–2% of the loan per year, depending on your LTV ratio

The impact of rate changes

On a 2,000,000 SEK mortgage over 25 years (annuity):

| Interest rate | Monthly payment | Total interest |

|---|---|---|

| 3.0% | ~9,486 SEK | ~845,700 SEK |

| 4.5% | ~11,120 SEK | ~1,335,900 SEK |

| 6.0% | ~12,878 SEK | ~1,863,300 SEK |

The difference between 3% and 6% is over one million SEK in interest — more than half the original loan.

Loans and your net worth

A loan is a liability that directly reduces your net worth. Understanding the true cost of borrowing helps you make better decisions: when to pay down debt versus invest, how aggressively to amortize, and whether refinancing makes sense.

Findex tracks your complete financial picture — assets and liabilities — so you can see exactly how each loan payment moves your net worth forward.