Yes, you need a permit to camp in many parts of the Loch Lomond & The Trossachs National Park during the "seasonal" window from March 1 to September 30. This rule applies specifically to "Camping Management Zones," which cover most of the popular loch shores to protect the environment from over-use. In 2026, these permits cost £4.50 per tent or motorhome per night and can be booked up to four weeks in advance through the official National Park website. The permit does not give you a specific "pitch" but allows you to camp anywhere within a designated "Permit Area." If you are camping outside of these zones or during the winter months (October–February), you do not need a permit and can follow standard "wild camping" guidelines under the Scottish Outdoor Access Code. However, during the summer, if you are caught camping without a permit in a restricted zone, you can face a fine or be asked to move by a park ranger.