Tasó finished his secondary studies at Bethlen Gábor Secondary School of Economics and Postal Services, and Kiss Ferenc Secondary School of Forestry and Game Management in Debrecen. He graduated as a part-time student at the Department of Sociology of the Faculty of Arts of Kossuth Lajos University, majoring in social work.
He served as mayor of Nyíradony between 1994 and 2014. He was appointed Secretary of State for Transport on 1 July 2014. He acquired his university degree from University of Debrecen, in social policy.
He started work in 1981 at the Gúth Forestry Plant of FEFAG, a forestry and timber industry state farm.
He was a foreman from 1982, then he held the positions of process manager, economic analyst and plant manager, finally sales manager. In 1991 he started his own business Quercus Baronet, a partnership, where he is managing partner.
On 11 December 1994 he was an independent candidate in the local elections for the mayoral position of Nyíradony, and was elected ahead of five candidates. Tasó took his oath on 27 August 2004.
In the parliamentary elections held in 2006 and 2010, he was elected Member of Parliament for Hajdúhadház.
He was also Member of Parliament from the county regional list of Fidesz between 2004 and 2006. He was elected incumbent mayor as an independent candidate in 1998, supported by Fidesz and the Christian Democratic People"s Party (Keresztéugdemokrata Néppart (Christian Democratic People's Party)). On 20 October 2002 he was elected mayor for the third term, this time as a Fidesz candidate.
Supported by Fidesz, the Hungarian Democratic Forum (Magyar Demokrata Forum (Hungarian Democratic Forum)), and the Association of Farmers" Circles, he also secured a seat in the General Assembly of Hajdú-Bihar County, where he headed the Committee on Tourism. He was 15th on the joint county list of Fidesz and Magyar Demokrata Forum (Hungarian Democratic Forum) in the 2002 parliamentary election. He was co-opted in the wake of the resolution of the County Board of Fidesz in August 2004 following the resignation of István Pálfi, elected from the Hajdú-Bihar County Regional List, who had been elected a member of the European Parliament (Member of the European Parliament).
Prior to his election to mayor he was owner and member of the limited liability company Quattro-Transport from 1993. He became a member of the Committee on Social and Family Affairs. He was appointed a member of the Local Government and Urban Development Committee on 30 May 2006.
