All major record shops, digital retailers and streaming services contribute to the chart, accounting for over 95% of the market.
A new chart is compiled and released to the public by the Irish Recorded Music Association on Friday at noon.
As of the issue dated 14 February 2025, the current number-one single on the chart is "Messy" by Lola Young.
In 1992, the singles chart became based on consumer sales after IFPI and the Irish Recorded Music Association (IRMA) granted a contract to Gallup, a market research company.
Gallup installed Epson PX-4 devices in sixty record stores to collect singles sales data.
[3] Dickie Rock & the Miami Showband with "Every Step of the Way" (1965) Source:[8] Note: Songs denoted with an asterisk (*) spent non-consecutive weeks at number one.