Tkálecz was born on January 8, 1894 in Turnišče, Prekmurje, in Zala County of the Kingdom of Hungary. His father István Tkálecz was an innkeeper, and his mother was Mária Hochhoffer, who was of German descent. In 1917, he enlisted in the army and was sent to Russia. After World War I, he worked as a schoolteacher in Črenšovci (or Cserföld), near Lendava.
On May 29, 1919, Tkálecz declared Prekmurje a republic. On June 6, the Hungarian Red Army was sent to Murska Sobota and overthrew the state. Tkálecz went into exile to Austria sometime during 1920, and later found work as a teacher in Nagykarácsony, Hungary, where he remained for many years. He died in Budapest in 1950. After 1929 he changed his name to Vilmos Tarcsay. In 1939 wrote a Prekmurje Slovene textbook called Vend-szlovenszka kniga cstenya.