Withholding Tax Calculator: Are You Overpaying? Estimate Your NOV Savings
February 27, 2026
6 min read
arvy Expat Tax Calculator
Withholding Tax Calculator: Are You Overpaying? Estimate Your NOV Savings
Most expats with a B permit in Switzerland overpay CHF 2,000–5,000 per year in withholding tax. The flat tariff doesn't account for your Pillar 3a contributions, actual commuting costs, professional training, or insurance premiums. A NOV (Nachträgliche Ordentliche Veranlagung) lets you claim these deductions — but is it worth it? This calculator estimates your potential savings in 60 seconds.
Your Situation
🏛️ Canton
Guide tax rates by canton. Actual rates depend on municipality and church tax.
💰 Gross Annual Salary
CHF/yr
Withholding tax applies to B/L permit holders earning under CHF 120,000/year. Above CHF 120,000: NOV is mandatory.
👤 Tax Tariff
A = single · B = married, one income · C = married, dual income
👶 Number of children
kids
⛪ Church member?
Your Deductions (NOV)
🏛️ Pillar 3a contribution (max CHF 7,258)
🚗 Daily commute (one way)
km
Standard deduction in QST tariff: ~CHF 1,000–2,000. Actual costs may be higher.
📚 Professional training / Weiterbildung (max CHF 12,000/yr)
🏦 Pension fund buy-in (Pillar 2 / BVG Einkauf)
👶 Childcare costs (Kita)
📅 Years in Switzerland (without NOV)
yrs
How many years have you already paid withholding tax without a NOV?
Withholding Tax in Switzerland: What Expats Need to Know
If you hold a B or L permit in Switzerland and earn under CHF 120,000 per year, your employer deducts withholding tax (Quellensteuer) directly from your salary every month. You never see the money — it goes straight from your employer to the cantonal tax authority.
The problem: the withholding tax tariff uses standardised deductions that don't reflect your real situation. It assumes average commuting costs, average insurance premiums, and zero voluntary deductions like Pillar 3a contributions. If your actual deductions are higher than these averages — and for most expats, they are — you're overpaying.
How Much Are Expats Typically Overpaying?
| Scenario | Annual Overpayment |
|---|---|
| Single, CHF 90k salary, pays into 3a, 20km commute | CHF 2,500–3,500 |
| Married, CHF 100k salary, 3a + childcare + training | CHF 4,000–6,000 |
| Single, CHF 80k salary, 3a only, short commute | CHF 1,500–2,200 |
| Single, CHF 110k salary, 3a + BVG buy-in + training | CHF 5,000–8,000 |
Over 3–5 years without a NOV, that's CHF 7,500–30,000+ in overpaid taxes — money that could have been invested, growing tax-free in Switzerland.
The double benefit: The money you save through a NOV is money you can invest. CHF 3,000/year saved and invested at 7% for 10 years becomes over CHF 41,000. That's the compound effect of tax optimisation — you don't just save money, you grow it. → Compound Interest Calculator
What Is a NOV (Nachträgliche Ordentliche Veranlagung)?
A NOV replaces the flat withholding tax with a regular tax assessment. You file a full tax return — declaring all income, wealth, and deductions — just like any Swiss resident with a C permit. The cantonal tax authority calculates your actual tax liability. If it's lower than the withholding tax already deducted, you get the difference back.
Key facts about the NOV:
| Aspect | Detail |
|---|---|
| Who can apply | B/L permit holders earning under CHF 120,000/year |
| Who must apply | Anyone earning over CHF 120,000/year (mandatory since 2021) |
| Deadline | March 31 of the following year (strict, non-extendable) |
| Irrevocable | Yes — once you apply, you can't switch back to withholding tax |
| Covers | All income, wealth, and deductions for the entire tax year |
Which Deductions Does the NOV Unlock?
The withholding tax tariff already includes some standard deductions. The NOV lets you claim the actual amounts — which are typically higher:
| Deduction | In QST tariff | Actual (NOV) | Typical extra |
|---|---|---|---|
| Pillar 3a | Not included | CHF 7,258 | CHF 7,258 |
| Commuting costs | ~CHF 1,500 standard | Actual (up to ~CHF 5,000) | CHF 500–3,500 |
| Professional training | Not included | Actual (max CHF 12,000) | CHF 1,000–12,000 |
| Pension fund buy-in (BVG) | Not included | Actual amount | CHF 5,000–50,000 |
| Childcare (Kita) | Not included | Up to CHF 10,100 federal / CHF 25,000 ZH | CHF 5,000–25,000 |
| Insurance premiums | Standard amount | Actual KVG + supplementary | CHF 500–2,000 |
| Charitable donations | Not included | Actual (up to 20% of income) | CHF 200–2,000 |
The Pillar 3a lever: The single biggest deduction for most expats. CHF 7,258 deducted at a 32% marginal rate = CHF 2,322 in annual tax savings. Over 5 years: CHF 11,610 saved. If you're not paying into 3a, you're leaving this money on the table twice — once in lost tax savings, once in lost retirement growth. → Pillar 3a for Expats: Complete Guide
When the NOV Can Backfire
The NOV is not always beneficial. In specific situations, the ordinary tax calculation can result in higher taxes than the withholding tax tariff:
This typically happens when you live in a high-tax municipality, have a partner with significant additional income (Tariff C), have few deductible expenses, or have substantial wealth (which is taxed in the ordinary assessment but not in withholding tax). Our article on withholding tax covers this in detail with concrete examples.
Rule of thumb: If your additional deductions (3a + commuting + training + BVG) total more than CHF 5,000–8,000, a NOV almost always saves money. If your deductions are minimal and you live in a high-tax municipality, do a comparison calculation first — or consult a tax advisor (CHF 100–200 for a basic check). → Withholding Tax: How to Get Thousands Back
Invest the Refund — The Compound Effect of Tax Optimisation
Here's what most expats miss: the NOV savings aren't just a one-time refund. They're annual recurring money that you can invest. At 7% return:
| Annual NOV savings | After 5 years invested | After 10 years | After 20 years |
|---|---|---|---|
| CHF 2,000 | CHF 11,500 | CHF 27,600 | CHF 82,000 |
| CHF 3,500 | CHF 20,100 | CHF 48,300 | CHF 143,500 |
| CHF 5,000 | CHF 28,700 | CHF 69,000 | CHF 205,000 |
CHF 3,500/year saved and invested for 20 years = CHF 143,500. That's not just tax optimisation — it's wealth building. And in Switzerland, the capital gains on that investment are tax-free.
Frequently Asked Questions: Withholding Tax & NOV
How much can I get back through a NOV?
Typically CHF 1,500–5,000/year. The biggest levers: Pillar 3a (saves ~CHF 2,200/year), commuting costs above the standard deduction, professional training, and pension fund buy-ins. Use our calculator above for your personal estimate.
What is a NOV?
A voluntary (or mandatory above CHF 120,000) tax return that replaces the flat withholding tax. You declare all income, wealth, and deductions. If your actual deductions exceed the standard amounts, you get the difference back.
Is a NOV always worth it?
Not always. In rare cases — high-tax municipality + few deductions — you may owe more. Rule of thumb: if your additional deductions (3a + commuting + training) exceed CHF 5,000, it almost always saves money. When in doubt: consult a tax advisor (CHF 100–200).
What's the deadline?
March 31 of the following year. For tax year 2025: March 31, 2026. This is strict and non-extendable. Miss it and the overpayment is lost.
Can I apply for a NOV for previous years?
No. You can only apply for the most recent tax year (before March 31). Tax overpayments from previous years without a NOV application are lost. This is why starting early matters — every year you wait costs thousands.
Do I need a tax advisor for the NOV?
Not necessarily. The cantonal tax offices provide forms and guidance. However, for complex situations (dual income, international assets, BVG buy-ins), a tax advisor (CHF 100–200 for a basic review) can ensure you claim everything you're entitled to.
What happens above CHF 120,000 salary?
A NOV is mandatory. Your employer still deducts withholding tax monthly, but you must file a full tax return. The withholding tax is credited against your final tax bill. Most people in this bracket get money back.
Can I invest the refund?
Absolutely — and you should. CHF 3,000/year saved and invested at 7% for 10 years becomes over CHF 41,000. Tax-free capital gains in Switzerland make this even more powerful. → Set up a savings plan with arvy from CHF 50/month.
Expat Finance Guides
Withholding Tax: Complete Guide
How to get thousands back
Pillar 3a for Expats
The biggest tax lever
Salary Breakdown Switzerland
What's left after all deductions
Investing as an Expat
Tax-free gains, brokers, strategy
Finance Roadmap: First Year
Month by month guide
Leaving Switzerland
Financial departure checklist
All arvy Calculators
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This calculator and article was created by Thierry Borgeat, Co-Founder of arvy, and reviewed by Patrick Rissi, CFA, and Florian Jauch, CFA. Last updated March 2026.
Disclaimer: This calculator provides guide values only and does not constitute personal tax advice. All withholding tax rates and marginal tax rates are approximations based on published cantonal tariffs for 2026 and may vary significantly by municipality, church tax status, income level, and individual circumstances. The estimated NOV savings are indicative — actual results will differ. A NOV application is irrevocable; in some cases the ordinary tax assessment may result in higher taxes than the withholding tax. We strongly recommend consulting your cantonal tax authority or a qualified tax advisor (CHF 100–200) before filing. arvy is a FINMA-supervised asset manager and does not provide tax advisory services. Legal Notice & Disclaimers
Disclaimer: This calculator provides guide values only and does not constitute personal tax advice. All withholding tax rates and marginal tax rates are approximations based on published cantonal tariffs for 2026 and may vary significantly by municipality, church tax status, income level, and individual circumstances. The estimated NOV savings are indicative — actual results will differ. A NOV application is irrevocable; in some cases the ordinary tax assessment may result in higher taxes than the withholding tax. We strongly recommend consulting your cantonal tax authority or a qualified tax advisor (CHF 100–200) before filing. arvy is a FINMA-supervised asset manager and does not provide tax advisory services. Legal Notice & Disclaimers
