The standard adult rate is CHF 3 per person per night in hotels. The rate is CHF 2 in group accommodation (including hostels), on campsites, and in holiday apartments. The municipal council may raise the tax to a maximum of CHF 5 when additional services or changed circumstances justify it.
Exemptions include stays of more than 30 days in the establishment, military personnel staying in Solothurn in the course of duty, and people staying using vouchers from charitable organizations, parishes, or similar bodies. Children up to the end of their 12th year receive a CHF 1 reduction; children up to the end of their 5th year pay no tourist tax.
The tax applies to paid accommodation in hotels, group accommodation, campsites and holiday apartments, including Bed & Breakfasts, Airbnb, private accommodation and holiday apartments. The accommodation provider must charge the tax in addition to the room price, collect it from guests and remit it to Solothurn Tourism. The tourism-tax report is due monthly by the 5th of the following month and payment by the 10th.