ISK vs KF vs AF - Which Account Leaves You With More?
Simulate the same investment strategy across an ISK, KF, and ordinary AF account. See how taxes, fees, foreign withholding tax, returns, and time affect the money you could actually have at the end.
📈 Kapital & Sparhorisont
GrunddataAvkastning & Skatteregler
📊 Förväntad Avkastning
🏛️ Schablonskatt & Avgifter
Simulatorn använder 2026 års schablonskatt som standard. Skatteregler och faktisk beskattning kan skilja sig från simuleringen.
Simuleringsresultat
Tre separata scenarier – hela sparandet placeras i ett konto
Relativt slutkapital
Ändra värdena till vänster för att se vilket konto som passar bäst.
Your investment balance only matters relative to what you spend.
Having 1 million kr sounds impressive. But whether that is enough depends entirely on your household's monthly expenses. The same investment portfolio can represent years of financial security for one household and only a short runway for another.
Your household expenses
Enter your approximate monthly household spending. You can replace this with your actual expense data in Household Saga.
Replace this estimate with your actual household spending to make the simulation meaningful.
Your real target isn't "a million."
The useful question is: "How much invested capital do I need to support my household?"
If your household spends 30,000 kr per month, that's 360,000 kr per year. A simple 25× expense target would therefore be 9 million kr. If your expenses are 20,000 kr instead, the same rule gives you a 6 million kr target.
Why Household Saga belongs here
The investment simulator can estimate what your portfolio could become. It cannot know what your household actually spends.
That's where Household Saga comes in: your real spending history gives the simulation a much better estimate of the capital you actually need.
What your simulated capital means in real life
This section uses the final balances from the simulator above and compares them against your household spending.
Runway is a simple comparison of simulated final capital divided by annual household expenses. It does not model future investment returns, inflation, taxes during withdrawals, pensions, or changes in spending.
How the simulation works
Choose your investment strategy
Enter your starting capital, monthly contribution, expected return, dividend yield, and investment horizon.
Run the same strategy across three accounts
The simulator applies the same investment assumptions independently to ISK, KF, and AF so you can compare the account types directly.
See the after-tax result
The result focuses on the capital you could actually have at the end of the period after the simulated account-specific taxes and fees.
Compare it with your household needs
Your investment balance becomes meaningful when compared with what your household actually spends. Use Household Saga to replace estimates with real spending data.
The account matters. But the end goal matters more.
ISK, KF, and AF are simply different ways of holding investments. The important question is not which account has the highest balance in isolation. It's which structure gives you the best outcome for the investment strategy you actually intend to follow.
ISK
An investment account where taxation is generally based on a standardized tax calculation rather than taxing every realized gain. This simulation models that tax drag over time.
KF
A capital-insurance structure that can be particularly relevant for investors holding foreign dividend-paying investments. The simulation also allows you to model insurance fees.
AF
A conventional taxable investment account. The simulation models capital-gains taxation when gains are realized, rather than applying an annual standardized account tax.
Don't confuse the simulation with a prediction
The calculator is deliberately a scenario simulator. If you enter a 7% expected annual return, it does not mean your portfolio will actually return 7% every year. Markets fluctuate, dividends change, tax rules change, and your own contributions may change.
The value of the simulator is that it lets you hold the investment assumptions constant and see how the account structure changes the long-term result.
For a more useful financial-planning result, pair the investment simulation with your actual household spending.
From simulation to real life
Household Saga turns the estimate into a real financial picture
The simulator tells you what your investments could become. Household Saga helps you understand what your household actually needs.
Track real household expenses
See where your money actually goes instead of relying on an assumed monthly spending number.
Build your true financial target
Your required capital is ultimately connected to your household spending, not an arbitrary net-worth milestone.
Connect spending with investing
Use your real expense baseline alongside investment projections to understand the gap between where you are and where you need to be.
FAQ
Frequently Asked Questions
Understanding the ISK, KF and AF simulation
What does this calculator actually simulate?
It simulates the same investment strategy independently in an ISK, KF, and AF account and estimates the capital remaining after the modeled account-specific taxes and fees.
Does the calculator tell me which account I should choose?
It shows which account produces the highest simulated result under the assumptions you provide. It is a scenario comparison, not personalized financial advice.
Why compare the accounts using the same investment strategy?
Because otherwise the comparison becomes meaningless. The simulator is designed to answer: if I make the same investment with the same starting capital, contributions, return assumptions, and time horizon, how might the account structure affect the result?
Is ISK always better than KF?
No. The relative result depends on the assumptions. Foreign dividend taxation, KF fees, account tax rates, portfolio characteristics, and investment horizon can all affect the comparison.
Is KF always better for foreign stocks?
Not automatically. KF can be attractive for foreign dividend-paying investments because of how foreign withholding tax is handled, but insurance fees and the specific securities involved also matter.
Why can AF sometimes beat ISK or KF?
With sufficiently low returns, the annual standardized tax associated with ISK/KF can represent a larger drag than the tax that would arise from realizing gains in a conventional AF account.
Why do dividends matter?
Dividends can create additional taxation effects, particularly when they originate outside Sweden. The simulator therefore lets you specify both dividend yield and the share of dividends coming from foreign holdings.
Does the simulator assume the market returns the same amount every year?
The simplified simulation uses a constant expected return. Real markets do not behave this way, so the result should be interpreted as a scenario rather than a forecast.
Why do I need to enter my household expenses?
Because an investment balance has no useful context without knowing what it needs to fund. A household spending 20,000 kr per month has a very different financial target from one spending 50,000 kr per month.
How does Household Saga fit into this?
Household Saga can provide the real-world expense baseline that the investment simulation cannot know on its own. Instead of guessing your monthly spending, you can use your actual household spending to determine how much capital you may ultimately need.
What is the 25× expense rule?
A commonly used financial-independence rule estimates a target by multiplying annual spending by 25. For example, 30,000 kr of monthly spending corresponds to 360,000 kr annually and a 9 million kr target. This is a rule of thumb, not a guarantee.
Does reaching the 25× target guarantee financial independence?
No. Investment returns, inflation, taxes, sequence-of-returns risk, longevity, pensions, changing expenses, and withdrawal strategy all matter. The 25× figure is best treated as a planning benchmark.
Should I use my current expenses or future expenses?
For a useful long-term plan, think about the expenses you expect to have during the period the portfolio is intended to fund. Housing, children, retirement, debt repayment, and lifestyle changes can all materially change your spending.
Does this calculator include pensions?
No. The investment simulation focuses on the capital being modeled in the selected account. Pension income should generally be considered separately when determining your future household funding requirements.
Is this financial advice?
No. This is an educational scenario simulator. Swedish tax rules and individual circumstances can change, so decisions involving significant investments should be evaluated using current official information and, where appropriate, professional advice.
Know what you need before deciding how to invest.
Simulate your ISK, KF and AF outcomes, then connect the result to your actual household spending with Household Saga.