On 7 August 2014, Stones signed a new five-year contract to keep him with Everton until 2019. He suffered an ankle injury against Manchester United on 5 October, ruling him out for between 10 and 14 weeks. Despite the injury, Stones was listed among the nominees for the Golden Boy 2014 Award alongside fellow Everton winger Gerard Deulofeu and fellow England internationals Calum Chambers, Luke Shaw and eventual winner Raheem Sterling.
He was named as a standby player for England's 2014 FIFA World Cup squad, but was not included in the final squad. Stones made his England debut on 30 May in a 3–0 friendly win over Peru at Wembley, replacing Everton teammate Leighton Baines for the final 15 minutes. On 3 September 2014, Stones made his first England start in a friendly against Norway at Wembley Stadium. Five days later, in England's first match of UEFA Euro 2016 qualification, Stones made his competitive debut in a 2–0 victory away to Switzerland at St. Jakob-Park, Basel.