"It's My Birthday" topped the charts in the United Kingdom―where will. i. am appears as a coach on The Voice UK―becoming will. i. am's tenth chart-topper there (including five as a member of The Black Eyed Peas), as well as Wise's first chart success in that country. "It's My Birthday" also became the second Rahman-related song to peak inside the top ten of the charts in the United Kingdom, the first being "Jai Ho! (You Are My Destiny)" alongside The Pussycat Dolls which peaked at number three there in April 2009. "It's My Birthday" also peaked within the top ten of the charts in Australia, as well as the top 30 of the charts in Belgium, New Zealand and the Republic of Ireland.