Swiss tax return: the receipt checklist so nothing is missing
Swiss tax return checklist: the documents and receipts you need, what you must attach and what you only keep on file. A list you can tick off in one evening.
In short: For a Swiss tax return you need your salary certificate (Lohnausweis), the statements from your bank, pillar 3a and insurers, and a receipt for every actual deduction: commuting, training, medical costs, donations, childcare and property maintenance. You usually attach only a handful of documents, but you should keep all of them, because the tax office can ask for any receipt later.
A Swiss tax return rarely takes long because the forms are hard, but because documents are missing: the dentist's bill from spring, the pillar 3a statement, the receipt for the course you took in autumn. If everything is at hand, you are done in one evening.
This checklist covers the documents you need for a tax return in Switzerland, which ones you have to attach and which ones you simply keep. It is written for employees and private individuals; the exact requirements of your canton are in the guide (Wegleitung) that comes with the forms.
Which documents do you need for a Swiss tax return?
The basics are the same for everyone: proof of income and proof of assets. Most of these arrive on their own by post or in e-banking; your only job is to collect them in one place.
The basic checklist:
- Salary certificate (Lohnausweis) from every employer of the year
- Statements for daily allowances from unemployment, sickness or accident insurance
- Pension statements (AHV state pension, occupational pension fund, private pensions)
- Bank and postal accounts: interest and balance statement as at 31 December, often as a tax statement
- Securities list or custody account statement with income
- Pillar 3a statement showing the year's contributions
- Proof of voluntary purchases into the pension fund
- Health insurance premium invoices and any premium reduction notice
- List of debts: mortgage, personal loans, interest statements
- For home owners: imputed rental value, service charges and maintenance invoices
- Last year's tax return and assessment
The receipt checklist for every deduction
Every actual deduction needs a receipt; flat-rate deductions need none. The table shows which proof belongs to which deduction and whether you typically submit it or only keep it.
| Deduction | Receipt | Attach or keep? |
|---|---|---|
| Commuting costs | Public transport pass, tickets; for a car, the reason and kilometres | Usually keep |
| Meals away from home | No receipt, flat rate per working day | Nothing needed |
| Other professional expenses (actual) | Receipts for work clothing, tools, trade literature | Keep |
| Education and training | Course invoice, proof of payment, receipts for materials | Attach in some cantons |
| Pillar 3a | Statement from bank or insurer | Attach |
| Medical costs | Health insurer's annual statement, dentist, pharmacy, glasses | Keep, attach a summary |
| Donations | Donation confirmation, payment record | Attach in some cantons |
| Childcare | Invoices from nursery, after-school care, day family | Usually attach |
| Property maintenance | Tradesperson invoices, service charge statement | Attach a summary, keep receipts |
An example: you earn CHF 85,000 net, have an annual travel pass for CHF 2,900, a language course for CHF 1,800 and dentist's bills of CHF 5,200 in the same year. For commuting, the pass invoice is enough; for the course, the invoice plus proof of payment. Medical costs you add up and compare with the threshold, which at federal level is 5 percent of net income, so CHF 4,250. Anything above that is deductible, but only with every single invoice.
Which deductions exist and which federal limits apply is explained in Tax deductions in Switzerland; the details on commuting, meals and the flat rate are in Professional expenses in Switzerland.
Which receipts do you have to attach to the tax return?
In most cantons you attach only a few documents: the salary certificate, the pillar 3a statement, the securities list and, depending on the canton, proof of training costs, donations, childcare or property maintenance. Everything else stays with you until the tax office asks for it.
If you file electronically, you upload the attachments as PDFs. A cleanly cropped, legible scan prevents follow-up questions; How to photograph receipts so they stay readable shows how.
Important: not attaching does not mean throwing away. The tax office can check any deduction during the assessment or later in a review and request receipts. If you cannot produce the receipt then, you lose the deduction. How long to keep receipts is covered in Keeping receipts as a private person.
How do you collect the documents during the year so nothing is missing in March?
The most reliable method is a single collection point that you fill the moment a receipt appears. Tax returns almost never fail because of documents that arrive automatically in January, but because of everyday receipts: the pharmacy, a course fee, a donation paid by Twint, a tradesperson's invoice.
A routine that works without much discipline:
- Set up categories that match the sections of the tax return: professional expenses, training, health, donations, childcare, property.
- Photograph every paper receipt immediately. Belego crops the scan, saves it as a PDF and reads the amount, date and merchant; anything it cannot read reliably is left blank for you to fill in.
- Save invoices that arrive by e-mail as PDFs in the same collection.
- Add a note to the receipt right away, for example "dentist, not covered by insurer". In March you will not remember.
- In January, export the tax year as a ZIP: PDFs named by date, merchant and amount, plus a CSV list with category and note. The CSV doubles as the summary that many cantons want for medical costs or property maintenance.
The annual overview also tells you early whether a deduction is worth it. If your health costs stand at CHF 3,100 in November and the threshold is CHF 4,250, you can buy the glasses you were planning in December instead of January. How to wrap up the year is described in Year-end receipts.
What if a receipt is missing?
First try to get the receipt again, then fall back on proof of payment. Dentists, course providers, nurseries and charities generally reissue invoices and confirmations on request, often as a PDF within days.
If that fails, a bank or credit card statement at least shows the date, payee and amount. For donations or commuting that is often enough; for medical costs or training the tax office usually wants the actual invoice, because it shows the purpose. All the options are covered in Lost a receipt?.
If you cannot document a deduction, claim it anyway and briefly explain why in the return; tax offices often accept a plausible substitute, although there is no guarantee.
Note: This article is general guidance, not tax advice. The law, your canton's guide and the information from your tax office or your Treuhänder (the Swiss term for a trustee or accountant) are what count.
Frequently asked questions
Do I need receipts for health insurance premiums in my Swiss tax return?
No. Premiums fall under the insurance deduction, which is capped at a flat amount and needs no receipts. Keep the premium invoice or policy anyway, because some cantons ask for proof when you receive a premium reduction. Medical costs such as the deductible and co-payments are different: for those you need the insurer's annual statement.
Do I have to keep lunch receipts for the meal deduction?
No. The deduction for meals away from home is a flat rate per working day, capped at CHF 3,200 per year at federal level as of 2026. You only state how many days you ate away from home and whether your employer offers a canteen or subsidy, in which case half the rate applies. Individual till receipts do not interest the tax office.
What happens if I claim a deduction without a receipt?
The tax office can strike the deduction if you cannot produce a receipt when asked. Usually you first receive a request with a deadline to submit the proof. If you do not respond, the item is corrected and the assessment is higher. Deliberately false statements can count as tax evasion, but a forgotten receipt on its own is not an offence.
Can I file a Swiss tax return without a salary certificate?
Only as an exception. The salary certificate is the central attachment; if it is missing, the tax office requests it or estimates your income. Ask your employer for a duplicate, which they are legally required to provide. If the employer no longer exists, payslips and bank statements serve as substitutes, with a short explanation in the return.