Bangkok's Deputy Governor says a shared rail fare cap of 45 baht per trip across all Bangkok-area MRT/BTS lines is targeted to start 1 January 2570 (2027). Transfers between lines won't be charged a second entry fee. Payment will use EMV contactless cards (credit, debit, Mang Mum transit card); overcharges are to be refunded within 3 working days via Paotang or the card account. Vulnerable groups keep existing discounts. Trial runs and the official rules are still pending, so watch for final details before budgeting staff commute allowances or relying on the new fare. Cash-only or non-EMV card users may need to plan ahead.