Tax deductions in the Swiss system
In Switzerland, taxable income does not equal gross income: the tax system provides a series of deductions that reduce the tax base and, consequently, the tax owed. Knowing and correctly using these deductions is the most effective and legal way to optimise your tax burden.
Deductions apply to both the direct federal tax (IFD) and cantonal and municipal taxes, but amounts and conditions can vary significantly from canton to canton. This guide presents the main deductions at the federal level, with notes on the most relevant cantonal differences.
From pension contributions (pillar 3a) to professional expenses, from mortgage interest to medical costs: each deduction has precise rules and maximum amounts that are essential to know to avoid leaving money on the table.
Federal vs. cantonal deductions
The Swiss tax system operates on three levels (Confederation, Canton, Municipality), and allowable deductions can differ between federal and cantonal taxes. Here are the main differences:
Direct federal tax (IFD)
- Maximum amounts set by the Federal Act on Direct Federal Tax (LIFD)
- Uniform rates throughout Switzerland
- Standardised deductions with defined flat rates
- Updates communicated annually by the Federal Council
Cantonal and municipal taxes
- Each canton sets its own maximum amounts and conditions
- Some cantons offer additional deductions not available at federal level
- Differences can be very significant (e.g. ZH vs. TI vs. GE)
- Always consult the tax law of your canton of domicile
The amounts in this guide refer to direct federal tax (IFD) 2026 unless otherwise stated. For cantonal deductions, always check with your cantonal tax office.
Professional expenses
Employees can deduct expenses necessary for their professional activity. The main categories are:
Commuting costs
Actual costs of public transport or, if justified, private car. The maximum deductible for IFD is CHF 3,000/year. Many cantons allow higher amounts (e.g. ZH: no limit for public transport).
Off-site meal expenses
If the commute does not allow lunch at home: flat rate of CHF 3,200/year (IFD). If the employer provides a subsidised canteen: CHF 1,600/year.
Other professional expenses (flat rate)
A flat rate of 3% of net salary (minimum CHF 2,000, maximum CHF 4,000 IFD) covers professional clothing, work tools, materials and small unspecified expenses.
Continuing education expenses
Professional development and retraining courses up to CHF 12,000/year (IFD), provided they serve to maintain or improve skills for the activity performed.
Home office / remote work
If the employer does not provide a workplace, a proportion of home office costs can be deducted (proportional rent, electricity, heating). The amount depends on the canton.
Pension — Pillar 3a
Contributions to pillar 3a (tied individual pension) are fully deductible from taxable income. This is one of the most significant deductions and should be used every year.
| Profile | Maximum amount 2026 | Condition |
|---|---|---|
| Employees with pension fund (2nd pillar) | CHF 7,258 | "Small" pillar 3a |
| Self-employed without pension fund | CHF 36,288 | Max 20% of net self-employment income |
| Self-employed with pension fund | CHF 7,258 | Same as employees |
Payment must be made by 31 December of the tax year. Retroactive payments are not possible. Opening multiple 3a accounts (max 5) allows staggered withdrawals with a significant tax advantage at the time of withdrawal.
Insurance and pension premiums
Premiums for mandatory and voluntary insurance and pension contributions can be deducted at both federal and cantonal level:
- Mandatory health insurance premiums (KVG) — basic
- Supplementary life and accident insurance premiums
- Contributions to legally recognised pension schemes
- Interest on savings capital (included in the federal flat rate)
| Marital status | Maximum IFD flat rate | Notes |
|---|---|---|
| Single person | CHF 1,800 | Including voluntary AHV contribution |
| Married couple (joint return) | CHF 3,600 | For both spouses combined |
| Per dependent child | CHF 600 | Added to the individual or couple flat rate |
Debt and mortgage interest
Interest on private debts is deductible within certain limits. For property owners, this is often one of the most significant deductions.
Mortgage interest
Interest on the mortgage for your own home is fully deductible. For those with a fixed-rate mortgage, the annual amount is known in advance and easily plannable.
Interest on personal loans
Interest on consumer credit, personal loans or leasing (interest portion) is also deductible, provided it is documented.
Maximum limit
Total deductible interest cannot exceed the amount of wealth income (dividends, interest income, rental income) plus CHF 50,000.
For property owners, you can choose each year between the flat-rate deduction for maintenance (typically 10–20% of the imputed rental value) and actual documented expenses. The most advantageous choice depends on the extent of work carried out.
Medical and dental expenses
Healthcare expenses not reimbursed by insurance can be deducted, but only for the portion exceeding a threshold calculated on net income.
- Medical expenses borne by the taxpayer (not covered by health insurance)
- Unreimbursed dental expenses
- Costs for glasses, prostheses and prescribed medical devices
- Expenses for treatment in authorised facilities (hospitals, clinics, nursing homes)
Calculation example (IFD)
Net income: CHF 80,000 → Threshold 5% = CHF 4,000
Total unreimbursed medical expenses: CHF 6,500
→ Allowable deduction: CHF 6,500 − CHF 4,000 = CHF 2,500
Deductions for children and family
Families benefit from several specific deductions at both federal and cantonal level. Here are the main ones:
Dependent child deduction
CHF 6,600 per minor child or child in education up to age 25, dependent on the taxpayer (IFD). Cantons provide different amounts, often higher.
Third-party childcare
Up to CHF 25,500 per child under 14 for documented expenses for daycare, after-school care, babysitters or holiday camps (IFD). The canton may have different limits.
Dual-income married couple deduction
If both spouses work: deduction of up to CHF 13,600 (IFD) on the lower income. This mitigates the tax penalty for married couples.
Dependent person deduction
CHF 6,600 for each person in need supported by the taxpayer (elderly parents, disabled family members), provided support is at least CHF 6,600/year (IFD).
Other allowable deductions
Beyond the main categories, there are several other deductions worth knowing about:
Donations and charitable gifts
Donations to recognised public-benefit organisations: deductible from 5% to 20% of net income (IFD: up to 20%). Includes donations to the Confederation, Cantons, Municipalities and political parties (up to CHF 10,300 IFD).
Pension fund buyback (2nd pillar)
Voluntary buyback contributions to the 2nd pillar (LPP) are fully deductible from taxable income. A very effective strategy if planned over multiple tax years to maximise the benefit.
Disability-related expenses
Expenses related to a disability of the taxpayer or a dependent (adaptations, special transport, assistance) are deductible for the portion not covered by insurance.
AHV/IV/EO employee contributions
Mandatory social insurance contributions (AHV, IV, EO, ALV) withheld from salary are automatically deductible. For the self-employed, contributions paid to the compensation fund are deductible from income.
Imputed rental value expenses (owners)
Property owners must declare the imputed rental value as income but can deduct maintenance costs (flat rate or actual), mortgage interest and property insurance premiums.
Federal deductions summary table
Here is an overview of the main deductible amounts at federal level (IFD) for the 2026 tax year:
| Category | IFD amount | Notes |
|---|---|---|
| Commuting costs | Max CHF 3,000 | Public transport or car if justified |
| Off-site meals | CHF 3,200 / year | CHF 1,600 if company canteen |
| Other professional expenses | 3% salary (CHF 2,000–4,000) | Flat rate for clothing, tools, etc. |
| Continuing education | Max CHF 12,000 | Maintaining/improving skills |
| Pillar 3a (with PF) | Max CHF 7,258 | Employees and self-employed with 2nd pillar |
| Pillar 3a (without PF) | Max CHF 36,288 | Self-employed without pension fund (max 20% income) |
| Insurance premiums | CHF 1,800 / 3,600 | Single / married + CHF 600/child |
| Debt interest | Wealth income + CHF 50,000 | Mortgage and personal loans |
| Child deduction | CHF 6,600 / child | Minor children or in education up to age 25 |
| Third-party childcare | Max CHF 25,500 / child | Children under 14 |
Amounts refer to direct federal tax (IFD) 2026. Cantonal deductions may differ significantly. Always check with your canton of domicile. Source: FTA / LIFD.
Tips to maximise your deductions
- Pay the maximum allowed into pillar 3a every year by 31 December — it's the deduction with the best effort-to-savings ratio
- Keep all supporting documents for at least 10 years: the tax office can request documentation for any declared deduction
- For medical expenses, accumulate invoices: the deduction only kicks in above 5% of income, so it can be worth concentrating expenses in a single tax year if possible
- If you own property, compare the flat-rate and actual maintenance deduction each year — the best option changes based on work carried out
- Plan 2nd pillar buybacks over multiple years: the tax effect is much stronger if spread over 3–5 annual payments rather than a lump sum
- Open multiple pillar 3a accounts (up to 5): staggered withdrawals over different years reduce the progressive rate applied to the capital
- Don't forget the dual-income married couple deduction (CHF 13,600 IFD) if both spouses work — it is often overlooked
- Use software like AccountEX to track deductible expenses throughout the year: at year-end you'll already have everything organised for your tax return
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