TaxWize Tax Insights

Practical guidance on Swiss tax filing for individuals and families across Switzerland.

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Tax guides

Provisional tax bill, assessment, final bill: what you pay when (2026)

The order of Swiss tax bills: the provisional bill, the assessment and the final bill, what each one asks of you, the interest rates for 2025 and 2026, and when overpaid tax comes back.

15.10.2026 · 9 min read

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Why TaxWize

Swiss tax calculator 2025: what six inputs show, and what they miss

The TaxWize tax comparison estimates your 2025 tax from six inputs, with no account and no upload. What it calculates, what it leaves out, and why the ranking of municipalities still holds.

12.10.2026 · 7 min read

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Tax guides

Which documents the 2025 Swiss tax return needs in Zurich and Aargau

A documents checklist for the 2025 tax return in the cantons of Zurich and Aargau: what you need, what the canton wants to see with the return, and what you only keep.

08.10.2026 · 7 min read

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Tax guides

Pillar 3a 2027: which maximum applies to which tax return?

Switzerland has published the pillar 3a maximums for 2027: CHF 7'373 and CHF 36'864. The 2026 tax return still runs on CHF 7'258. How the years map to the returns.

05.10.2026 · 7 min read

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Tax guides

Voluntary tax disclosure in Switzerland 2026: back taxes, conditions and heirs

A forgotten account, inherited securities: how the penalty-free voluntary disclosure works, how far back the back tax reaches, and what applies to heirs.

01.10.2026 · 7 min read

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Why TaxWize

What your 2025 tax return tells you about 2026

Your 2025 return shows gaps that are still open for 2026, and for Pillar 3a that window closes on 31.12.2026. Why autumn is the right moment, and what TaxWize shows you.

28.09.2026 · 7 min read

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Tax guides

Childcare costs tax deduction in Switzerland: the 2025 limits in seven cantons

Daycare, childminders, day school: what counts as deductible childcare in Switzerland, why the limit applies per child, and how far the seven cantons differ for 2025.

24.09.2026 · 8 min read

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Tax guides

Why Swiss tax deduction limits change every year: the 2027 figures

Lucerne updates its franc deductions annually, Zurich every two years, the Confederation annually. Why several figures are current at once, and which year counts in January 2027.

21.09.2026 · 7 min read

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Perspectives

Does AI check your Swiss tax return? What the cantons say in 2026

In Solothurn, a system of rules and machine learning can trigger an automated tax assessment. Schwyz spells out where the limits are. Here's the overview.

17.09.2026 · 7 min read

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Perspectives

Crypto and the automatic exchange of information in 2026

Switzerland is not running the automatic exchange of information on crypto-assets in 2026. What the federal position actually says, and why your crypto still belongs in your tax return.

10.09.2026 · 6 min read

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Tax guides

The Swiss securities register: where your 31 December tax value comes from (2025)

The tax value of listed securities at 31 December comes from the Federal Tax Administration's price list, not from your bank's custody statement. How the valuation works, for the 2025 tax period.

07.09.2026 · 9 min read

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Tax guides

What a tax deduction actually saves you (2025 tax year)

A CHF 1'000 deduction does not cut your tax bill by CHF 1'000. What it is really worth depends on your income and on your municipality. Worked through for the 2025 tax year.

03.09.2026 · 8 min read

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Tax guides

Pillar 3a buy-in: 2026 is the first year it works

Pillar 3a has allowed buy-ins since 2025, but 2026 is the first year one is possible. What you can pay in for a 2025 gap, who qualifies, and how the deduction lands.

31.08.2026 · 7 min read

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Tax guides

Ermessensveranlagung: when the Swiss tax office estimates your taxes

What a discretionary assessment is, how high the canton estimates, why objecting to one is harder than usual, and what has to happen within 30 days.

27.08.2026 · 7 min read

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Why TaxWize

Where your tax data actually runs

Which part of TaxWize runs on which machine, who operates it, what leaves Switzerland, and why encrypted means three different things with three different owners.

24.08.2026 · 7 min read

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Perspectives

Married-couple taxation: what Switzerland votes on 29 November 2026

On 29 November 2026 Switzerland votes on the Mitte initiative on married-couple taxation. What it asks for, and how it sits with the individual-taxation law.

20.08.2026 · 8 min read

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Tax guides

Deducting further education costs: the 2025 caps in seven cantons

One course invoice, two ceilings: for tax year 2025 Zurich allows CHF 12'400, Aargau CHF 18'000, and the direct federal tax CHF 13'000 everywhere. What counts as job-related, what your employer's contribution removes, and which year the invoice belongs to.

17.08.2026 · 8 min read

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Why TaxWize

Why TaxWize returns the same number every time

The tax calculation is a rule set, not a language model. What that buys you in practice: a visible chain of line items, separate cantonal and federal columns, and a result you can reproduce.

13.08.2026 · 6 min read

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Tax guides

Two employers, a change of hours: the 2025 Zurich tax return

Two salary certificates in one year, a lower workload, a gap in between. What actually changes on a canton Zurich return for the 2025 tax year, which deduction you only get once, and where the working days decide.

10.08.2026 · 7 min read

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Tax guides

Property maintenance deductions in Switzerland: what counts for 2025

Which part of a renovation is deductible maintenance, which part sits on the shelf until you sell, and why canton Zurich and the federal tax put two different flat rates on the same return. With the quotas from Zurich's own catalogue.

06.08.2026 · 12 min read

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Tax guides

Bern's second 2026 tax instalment, payable by 19.09.2026

The second instalment bill falls due on 20.08.2026 and is payable within 30 days. What the 70 per cent actually means, how the 4.00 % default interest works, and what canton Bern publishes if you can't pay.

03.08.2026 · 9 min read

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Perspectives

Imputed rental value ends in 2029, and the deductions go with it

The Federal Council has set the abolition of Switzerland's imputed rental value for 1 January 2029. What falls away then, what still applies until then, and what decides your own number.

30.07.2026 · 9 min read

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Tax guides

Swiss tax return deadline extension 2026: what is still possible

How long you really have to file the 2025 tax return in AG, ZH, LU, SO, BE, ZG and SZ: the deadlines, the second extension tier, the fees, and what happens if you do nothing at all.

27.07.2026 · 10 min read

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Why TaxWize

Verified to the franc: the method behind the TaxWize calculation

How TaxWize checks its tax calculation against the cantons' own calculators and portals, franc by franc: the procedure, a worked example, the documented limits, and how you can run the same check yourself.

27.07.2026 · 9 min read

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Why TaxWize

Your tax data online: 6 questions for any provider (2026)

Before you upload your salary certificate and bank statements anywhere: six questions every serious provider must be able to answer, and how TaxWize answers them.

25.07.2026 · 9 min read

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Tax guides

Getting your Swiss tax return done: costs in 2026

What having your Swiss tax return prepared costs in 2026: services from CHF 35, fiduciaries from about CHF 150 to over CHF 1'500, the free cantonal portal and TaxWize at CHF 39. With sources and dates.

13.07.2026 · 9 min read

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Why TaxWize

Swiss tax return: software and services compared 2026

The honest 2026 comparison: the official cantonal portal, TaxWize, Dr. Tax Privat, the AI providers iqtax and Bärli Tax, plus the filing services steuermacher.ch, SimpleTax and taxea, with prices and sources.

12.07.2026 · 18 min read

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Tax guides

Taxed at source in Switzerland? When filing a tax return gets money back (2026)

If you are taxed at source, filing a tax return can refund overpaid withholding tax. When it is worth it, the CHF 120'000 rule, the 31 March deadline, and the Q4 myth.

12.07.2026 · 7 min read

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Perspectives

Individual taxation: what changes now that it has passed

On 8 March 2026 Switzerland voted for individual taxation. What it actually means, who will tend to pay less or more, and when it takes effect.

07.07.2026 · 4 min read

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Tax guides

Your commute and work costs: flat rate or actual receipts?

How Switzerland's work-expense deductions actually work: commuting (and why you usually deduct the train, not the car), the lunch deduction, and the flat rate vs. itemising. With Zurich and Aargau figures.

03.06.2026 · 5 min read

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Tax guides

Your car in your tax return: what it's worth, and why

How a private car is declared as wealth in Switzerland, how its tax value falls each year, and what changes with a used car, a leasing buyout, or a classic car.

02.06.2026 · 5 min read

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Tax guides

Pillar 3a and tax: from your first payment to retirement

Pillar 3a is Switzerland's most popular tax deduction. The full picture: what you save now, how the payout is taxed at retirement, and what changes if you use it to buy a home.

31.05.2026 · 6 min read