Yes—**20-minute tickets are sold by ticket vending machines**, and you can pay by credit or debit card.

- **Metro stations:** Buy from the ticket machines before the entrance gates. Machines offer an English-language option and accept cards.
- **On buses:** You can buy from the onboard ticket machine using a card; onboard machines are card-only. Buy immediately after boarding.
- **Other locations:** Ticket machines near stops, newsstands/kiosks, and ZTM Passenger Service Centres also sell tickets. [Warsaw’s official visitor guide](https://go2warsaw.pl/en/getting-around-warsaw/), [operator’s payment information](https://skm.warszawa.pl/faq/).

The regular **20-minute ticket costs PLN 3.40** and covers zones 1 and 2. Paper tickets bought at a station or kiosk must be validated immediately after boarding a bus/tram, or at the metro entrance gate. **A 20-minute ticket bought from an onboard machine is already validated—the countdown starts when you purchase it.** [Official visitor guide](https://go2warsaw.pl/en/getting-around-warsaw/), [ZTM ticket guide](https://mbc.cyfrowemazowsze.pl/Content/100029/PDF/00109099_-_iZTM-Miesiecznik-Zarzadu-rtu-Miejskiego-2023-nr-2_sygn-Vars-.pdf).