These deductions are checked too rarely by Swiss private individuals

Basics

For Swiss private individuals, professional expenses in the tax return are often treated too broadly. This is exactly where mistakes arise: professional expenses, home office costs and continuing education costs do not follow the same logic.

For direct federal tax in the 2025 tax period in particular, commuting costs are deductible only up to a maximum of CHF 3,200, additional costs for meals away from home follow fixed amounts, and other professional expenses are generally covered by a flat-rate deduction of 3% of net salary, with a minimum of CHF 2,000 and a maximum of CHF 4,000.¹

The key is to keep the categories separate: the flat-rate deduction for other professional expenses already covers many typical outlays, including work tools, specialist literature, professionally necessary hardware and software and, in principle, also the costs of a private study.

Profession-related education and continuing education costs, by contrast, do not belong in this flat-rate deduction, but in a separate general deduction.^1,2

Anyone who does not separate this logic usually makes one of two mistakes: either too many costs are broadly hidden under professional expenses, or genuine continuing education costs are not claimed at all even though they are separately deductible.^1,2,7

Frequently overlooked professional expenses

For direct federal tax, it is worth taking a close look at the classic professional expenses. Not every expense is deductible, but many items are abandoned too quickly or calculated incorrectly.¹

• Commuting costs: For direct federal tax in the 2025 tax period, the actual necessary costs of travelling to work are deductible up to a maximum of CHF 3,200. For a private car, the comparison with public transport generally applies unless public transport is objectively unreasonable.¹
• Typical mistake: Claiming the car in full on a flat basis even though public transport would be reasonable, or failing to take home office days into account.^1,3,4,5
• Important supporting document: Public transport subscriptions, tickets, commuting route, justification for using a private vehicle.¹

• Meals away from home: For direct federal tax, the rule is generally CHF 15 per main meal taken away from home or CHF 3,200 per year in the case of regular meals away from home. The deduction is halved if the employer provides subsidised meals; it is effectively eliminated if the meal costs no more than CHF 10.¹
• Typical mistake: Claiming meals in full despite a staff canteen, lunch checks or home office days.^1,3,4,5
• Important supporting document: Salary certificate, information about the canteen or employer subsidy, working days.¹

• Other professional expenses: The flat-rate deduction of 3% of net salary, with a minimum of CHF 2,000 and a maximum of CHF 4,000, already covers many costs, including specialist literature, hardware and software, work tools and private study costs.¹
• Typical mistake: Claiming individual costs twice or listing effective costs in addition to the flat-rate deduction.^1,3,6
• Important supporting document: Separate schedule and supporting documents if you claim effective costs instead of the flat-rate deduction.¹

• Continuing education: Continuing education is a separate general deduction. For direct federal tax in the 2025 tax period, up to CHF 13,000 of self-funded profession-related education and continuing education costs may be claimed.^2,7
• Typical mistake: Putting continuing education into the flat-rate professional expenses deduction or not declaring it at all.^1,2,7
• Important supporting document: Invoices, proof of payment, course programme, employer reimbursements.^2,7

A common misconception arises particularly with other professional expenses: many taxpayers do collect receipts for software, specialist books or a professionally necessary study, but forget that these costs only have an additional effect if you do not claim the flat-rate deduction and instead declare the effective costs in full and with proof.^1,3,6

Commuting costs are often claimed either too cautiously or too generously

Too rarely examined are not only public transport costs, but also the question of whether the conditions for a higher deduction are even met when using a private vehicle. For direct federal tax, for a car or motorcycle the amount accepted is generally only the amount that would have been incurred by using the available public transport, unless its use is objectively unreasonable.¹

Conversely, commuting costs are often carried forward for too long on home office days. Several cantons expressly point out that for days with actual home office or with a claimed private study, commuting costs can no longer be deducted in the same way.^3,4,5

Meals are often declared without looking at the salary certificate

For the meal deduction, what counts is not the taxpayer’s subjective assessment, but the tax-relevant additional burden compared with normal meals at home. As soon as the employer makes subsidised main meals possible or the salary certificate contains corresponding indications, the deduction is reduced. Home office days also have a direct effect here, because on those days there are typically no additional professional costs for meals away from home.^1,3,4,5

Classifying home office correctly

The term home office deduction Switzerland is misleading in practice. For employees, there is no independent special deduction with a fixed flat rate at federal level. From a tax perspective, the real issue is whether the costs of a private study can be recognised as effective other professional expenses.^1,4

The hurdle is deliberately high. Direct federal tax recognises the costs of a private study only if you can prove that you have to use a room in your private home mainly and regularly for professional work. Merely occasional work in the private home does not, according to the guidance, cause deductible additional costs.¹

Cantonal authorities also review this restrictively. Zurich states that the deduction cannot be combined with the flat-rate deduction for professional expenses, that the commuting and meal-related additional costs which cease to exist on study days can no longer be deducted, and that no deduction is allowed insofar as employer reimbursements cover the costs.³

Bern formulates this similarly, stating that there is no separate home office deduction, but that home office costs fall under other professional expenses. There as well, commuting costs and meals away from home are excluded for the relevant days if private study costs are effectively claimed.⁴

Vaud follows the same direction, reducing commuting and meal deductions proportionally in the case of telework, while allowing the flat-rate deduction for other professional expenses to remain. Effective costs for a private study are expressly accepted there only on a restrictive basis, namely where working from home is necessary or even mandatory and not merely a matter of personal convenience.⁵

The Canton of Aargau also shows how concrete the review can become: a deduction for a private study is recognised only in the case of regularly substantial work from home and where there is a special room used mainly for professional purposes. The effective home office costs replace the flat-rate deduction there if, together with the other effective professional expenses, they are higher; cumulation is excluded.⁶

In professional practice, this is why substantial and regular home office use is often applied, frequently in an order of magnitude of around one-third to 40% of working time. However, this order of magnitude is not a rigid federal rule, but only a practical guide; the decisive factors remain cantonal practice and your specific case.⁸

What often goes wrong in practice

• You declare home office costs even though a reasonable workplace is available at the employer’s premises.^3,5,8
• You only use a laptop at the dining table, but do not have a clearly separated workspace.^1,6,8
• You combine effective study costs with the 3% flat-rate deduction.^1,3,6
• You leave commuting and meal deductions unchanged even though part of the working days were spent in home office.^3,4,5

Claiming continuing education correctly

The continuing education deduction is particularly often underestimated in Swiss private tax returns. Since the new regulation, profession-related education and continuing education costs no longer belong to professional expenses, but to the general deductions.

This is important because different rules apply here than for other professional expenses.^1,2

For direct federal tax, up to CHF 13,000 can be deducted in the 2025 tax period. You are entitled to the deduction if you have a first qualification at upper secondary level or if you have reached the age of 20 and the costs do not relate to education up to the first qualification at upper secondary level. In addition, you must have borne the costs yourself.^2,7

An often overlooked point: the deduction does not require a direct connection with current earned income in the same tax period. According to the FTA, the deduction can also be claimed if no earned income was generated in the relevant tax period. This makes the deduction relevant precisely in cases of career reorientation, re-entry into the labour market or transition phases.²

It is equally important to distinguish what is not deductible. Not every personally meaningful educational investment is, for tax purposes, profession-related continuing education.

The FTA specifically excludes advisory services, career, study and profession counselling, coaching, as well as events with a predominant hobby, fitness, leisure or entertainment character from the deductible concept of education.²

If you therefore want to declare a programme, seminar or course, you should first check whether professional knowledge is actually being taught. Courses, seminars, congresses and similar events with a professional orientation are generally more likely to qualify; individual coaching or offers primarily related to leisure are generally less likely to qualify.²