A Czech Republic tourist visa allows you to stay for up to 90 days within a 180-day period. This means your total stay across all Schengen countries combined must not exceed 90 days in that timeframe. The visa can be issued as single-entry, double-entry, or multiple-entry, depending on your travel plans. It’s important to follow the permitted duration strictly, as overstaying can lead to penalties or future visa complications. Always plan your itinerary carefully and ensure your return travel aligns with your approved visa validity.