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Official Languages: Bulgarian

Bulgarian Is the Only Official Language and Uses Cyrillic, so Signs and Menus Stop Looking Familiar outside the Tourist Centres. English Is Common with Younger People and in Sofia, Plovdiv, Varna and the Resorts, Thin in Villages. Photograph Your Address Rather than Retyping It, Because Transliteration Is Inconsistent

Mobile Network: Coverage Is Strong across the Cities, the Motorways and the Black Sea Resorts, with 5G in Sofia, Plovdiv, Varna and Burgas and 4G Reaching Nearly Everyone. Unusually for the European Union, 3G Still Runs Here, with a Sunset Announced for 2027, so an Older Handset Connects. Signal Thins in the High Mountain Valleys

Roaming/SIM/eSIM: An eSIM Is the Quickest Route on a Compatible Phone, Because You Install It before Departure and Land Already Connected, with No Shop Visit and No Identity Paperwork. A Local Physical SIM Can Work Out Cheaper across Several Weeks and Gives You a Bulgarian Number, Which Some Delivery and Parking Apps Require. Travelling on an EU Plan, Roaming Here Costs No Extra under EU Roaming Rules; Outside the EU, Check the Daily Rate before You Rely on It

Bulgaria Has Used the Euro since January 2026, so Cards and Contactless Behave Exactly as They Do Elsewhere in the Eurozone. Sofia Is Close to Cashless and You Tap a Bank Card Straight onto the Reader at the Metro Barrier and on Board Buses and Trams. Keep Small Notes for Village Shops, Mountain Huts, Beach Kiosks and Market Stalls

Tipping Is Normal but Modest, and It Is Now Done in Euro. Around 10 Percent Is the Usual Thanks in a Restaurant If the Service Was Good, and Rounding Up to the Next Euro Covers a Cafe, a Bar or a Short Taxi Ride. Read the Bill First, Because a Service Charge Is Occasionally Printed on It in Tourist-Heavy Places. Cash Reaches the Staff More Reliably than a Card Tip, and a Euro or Two a Day Is Plenty for Housekeeping

Plug Type: Type C and Type F

Voltage: 230 V, 50 Hz

Adapter: Bulgaria Uses the Same Round-Pin Sockets as Most of Continental Europe, so a Plug from Germany, France or Poland Needs No Adapter. Visitors from the UK, Ireland, North America and Australia Do Need One. Chargers Marked 100 to 240 V Work as They Are, but a 110 V Appliance Needs a Converter