Smith has played with Lavey from underage level. He has yet to win a championship medal at senior level.
Inter-county
Minor and U-21
On 17 July 2011, Smith lined out for the Cavan minor team in the Ulster final against Armagh. Smith scored a point in the 0–12 to 1–6 victory.[1] He joined the county Under-21 team in 2013. On 10 April, Smith lined out at wing forward in the Ulster Final against Donegal. Smith scored two points in the 0–13 to 1–6 win.[2] On 20 April, Smith played in the All-Ireland semi-final against Cork, where Cavan suffered a one-point defeat.[3]
On 9 April 2014, Cavan were in the Ulster Final again, and once again faced Donegal. A 2–6 to 0–8 win gave Smith his second Under-21 Championship.[4] On 19 April, Smith played in defence as Cavan controversially lost the All-Ireland semi-final to eventual winners Dublin.[5] On 18 March 2015, Smith's underage career with Cavan came to an end with defeat to Donegal in the first round.[6]
Senior
Smith joined the senior squad in 2016. On 29 May 2016, he made his championship debut as a substitute in an Ulster championship win over Armagh.[7] On 5 February 2017, he scored two points in his National League debut, a loss to All-Ireland champions Dublin.[8]
On 23 June 2019, Smith started in the Ulster Final as Cavan faced Donegal, with Cavan falling to a five-point defeat.[9] On 22 November 2020, Cavan met Donegal in the Ulster Final for the second year in a row. Smith scored a point as Cavan stunned Donegal to win their first Ulster title since 1997.[10] On 5 December, Smith started the All-Ireland semi-final loss to Dublin.[11] Smith was nominated for an All-Star award for the first time at the end of the season.[12]
On 2 April 2022, Smith was in the half-back line as Cavan faced Tipperary in the National League Division 4 final at Croke Park. Cavan were winners on a 2–10 to 0-15 scoreline.[13]
On 9 July, Smith started Tailteann Cup final against Westmeath, scoring three points in the four-point loss.[14] At the end of the season, Smith was named on the Tailteann Cup Team of the Year.[15]