The Swiss authorities online
If you have made donations to charitable organisations during the year, you can deduct the amount in your tax return. There are cantonal differences regarding which organisations are approved, the maximum amount that can be deducted and the minimum size of donations.
Donations made to a ZEWO-certified charity can be deducted from both federal taxes and cantonal and communal taxes.
To find out which other donations can be deducted, please contact your cantonal tax administration.