Save tax with pillar 3a

Calculate how much your 3a contribution saves you in taxes, each year and until retirement.

Your situation

CHF
Annual tax savings
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Contribution considered—
Marginal rate—
Tax savings / year—
Total contributed over the period—
Cumulative tax savings—
⚠️ Estimate. Real savings depend on your exact marginal rate (income, canton, municipality, marital status). On withdrawal, 3a capital is taxed separately at a reduced rate. This is not tax advice.
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How pillar 3a reduces your taxes

Pillar 3a contributions are fully deductible from your taxable income, up to the legal cap. In 2026 the cap is CHF 7,258 for an employee with a pension fund, and 20% of income (max CHF 36,288) for a self-employed person without a 2nd pillar.

The tax saving equals your contribution times your marginal tax rate (the rate on your last income bracket). The higher your income and municipal taxes, the bigger the saving. Repeated yearly until retirement, the effect is substantial.

What is the 'marginal rate'?

It's the tax rate on the last franc of your income. In Switzerland it is often between 15% and 40% depending on income, canton and municipality. Your tax statement or a cantonal simulator gives it precisely.

Is 3a capital taxed later?

Yes, on withdrawal (retirement, property purchase, leaving Switzerland…) the capital is taxed separately at a reduced rate. The net advantage usually stays very favourable.

Detailed calculation method

Pillar 3a cuts tax because the contribution is deducted from taxable income. The saving therefore does not depend on your account's return but on your marginal rate: the rate applied to the last franc earned.

annual saving = (capped) contribution × marginal rate
cumulative saving = annual saving × number of years

2026 ceilings: CHF 7,258 for an employee with a pension fund; 20 % of earned income, up to CHF 36,288, for a self-employed person without a second pillar.

The calculator automatically caps the contribution according to the status chosen and warns you if you exceed it. The marginal rate depends on your canton, municipality and family situation: estimate it with our tax comparison by looking at the effect of CHF 1,000 more income.

Limitations and accuracy

The cumulative figure shown is a sum of annual savings, not discounted: it accounts for neither the return on your 3a capital, nor inflation, nor changes in your marginal rate over a career.

It also does not deduct the tax on withdrawal. Pillar 3a capital is taxed when paid out, separately from income and at a reduced rate — much lower than the saving obtained on the way in, which is what makes the scheme worthwhile, but the net advantage is slightly below the figure shown. Finally, a cross-border worker only benefits from the deduction if taxed on actual deductions, i.e. as a quasi-resident: see our article on withholding tax in Geneva.

Frequently asked questions

How do I find my marginal rate?

Compute your tax with your current income, then with CHF 1,000 more: the difference divided by 1,000 is your marginal rate. In Switzerland it is most often between 20 % and 40 % depending on canton, municipality and income.

Should I open several 3a accounts?

It is common practice: withdrawals must always close an account in full, and taxation on withdrawal is progressive. Spreading capital over three or four accounts allows staggered withdrawals across several years and reduces the final tax.

Can pillar 3a be withdrawn before retirement?

Yes in defined cases: buying or amortising your main residence, starting self-employment, leaving Switzerland permanently, disability, or buying into a pension fund. Outside those cases the capital stays locked until five years before the reference age.

Can a cross-border worker open a pillar 3a?

Yes, if subject to Swiss social security. But the deduction only has a tax effect if they request taxation on actual deductions (quasi-resident status), before 31 March of the following year.

Sources and references