Retirement Savings Planner

Estimate whether your private investment strategy will sustain you through retirement. All displayed values are in today's purchasing power.

Time & Savings

Current age i Your age today. The simulation starts from this point.

Retirement age i The age at which you stop contributing and start withdrawing. Must be greater than your current age.

Projection end age i The age up to which the simulation runs. Choose a value well beyond your expected lifespan for safety.

Current savings i The total amount currently invested in your private portfolio.

Contributions & Payouts

Monthly contribution before retirement i How much you add to your investment account each month until retirement.

Annual contribution increase (%/yr) i Your monthly contribution grows by this percentage each year (e.g. to keep up with salary increases). Set to 0 for constant contributions.

Desired net monthly payout i The amount you want to receive each month after retirement, in today's money. The actual withdrawal will be higher to cover taxes, and will grow with inflation to maintain this purchasing power.

Flat payout tax rate (%) i A simplified flat tax rate applied to each withdrawal during retirement. This covers income tax on the payout. Set to 0 if withdrawals are tax-free in your situation.

Economic Assumptions

Expected annual return (%/yr) i The average annual gross return on your investments before inflation. A global equity portfolio has historically returned 5–8 % p.a.

Expected annual inflation (%/yr) i The expected average rate of inflation. Switzerland has historically seen 0.5–2 % p.a. (1.5–2.5 % for Germany). This is used to express all results in today's purchasing power.

Wealth Tax (Optional)

Apply Zürich cantonal wealth tax i When enabled, annual wealth tax based on Canton of Zürich rates is deducted from the portfolio once per year, assessed on the nominal account balance.

Municipal tax multiplier (%) i The Steuerfuss of your municipality. For Zürich city this is 119 %. Combined with the cantonal multiplier (95 %), this determines the total wealth tax. Only relevant if wealth tax is enabled.

Married couple i When enabled, the married-couple wealth tax tariff is used instead of the single-person tariff. This generally results in a higher tax-free allowance.

Adjust the inputs above to see results.

Balance at Retirement

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in today's money

Balance at End

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in today's money

Total Gross Withdrawals

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in today's money

Total Contributions

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Total Payout Tax

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Total Wealth Tax

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Methodology & Assumptions

The simulation runs month by month from your current age to the projection end age. All values displayed in the graph are expressed in today's purchasing power (real terms).

Before retirement: Each month, the portfolio grows at the expected return (compounded monthly) and receives your monthly contribution. Contributions increase annually by the specified rate.

During retirement: Each month, a gross withdrawal is made to deliver your desired net payout after the flat payout tax. The nominal payout grows with inflation so that your purchasing power stays constant.

Wealth tax: When enabled, Zürich cantonal wealth tax (Einfache Staatssteuer × Steuerfuss) is assessed once per year on the nominal portfolio balance. You can choose between the single-person and married-couple tariff.

Inflation adjustment: Internally, the model tracks nominal balances (which is required for wealth-tax computations). Displayed balances are then deflated by cumulative inflation to show real purchasing power.

Limitations: This tool uses constant return, inflation, and tax-rate assumptions throughout the projection. It does not model market volatility, changing tax law, or stochastic outcomes. It is intended as a rough planning guide, not a precise forecast.

Disclaimer

This calculator is provided for informational and educational purposes only and does not constitute financial, tax, or investment advice. The results are based on simplified models and may not reflect your individual circumstances, future legislative changes, or the full complexity of Swiss tax law.

No reliance should be placed on the outputs of this tool when making financial or investment decisions. Always consult a qualified financial advisor or tax professional before acting on any information presented here. The author accepts no liability for any loss or damage arising from the use of, or reliance on, this calculator.

Privacy: This calculator runs entirely in your browser. No input data is permanently stored or sold to third parties.