Religion
While northern and central Germany was the origin of the Reformation, Austria (and Bavaria) was the heart of the Counter-Reformation in the sixteenth and seventeenth centuries, when the absolute monarchy of Habsburg imposed a strict regime to maintain Catholicism's power and influence among Austrians. The Habsburgs viewed themselves as the vanguard of Roman Catholicism and all other confessions and religions were oppressed. In 1781, Emperor Joseph II issued a Patent of Tolerance that allowed other Christian confessions a limited freedom of worship. Religious freedom was declared a constitutional right in the Austro-Hungarian Ausgleich in 1867 thus paying tribute to the fact that the monarchy was home of numerous religions beside Roman Catholicism such as Greek, Serbian, Romanian, Russian, and Bulgarian Orthodox Christians (Austria neighboured the Ottoman empire for centuries), and both Calvinist and Lutheran Protestants.
Austria continued to remain largely influenced by Catholicism. After 1918, First Republic Catholic leaders such as Theodor Innitzer and Ignaz Seipel took leading positions within or close to the Austrian Government and increased their influence during the time of the Austrofascism—Catholicism was treated much like a state religion by dictators Engelbert Dollfuss and Kurt Schuschnigg. Although Catholic leaders welcomed the Germans in 1938 during the Anschluss of Austria into Germany, Austrian Catholicism stopped its support of Nazism later on and many former religious public figures became involved with the resistance during the Third Reich. After 1945 a stricter secularism was imposed in Austria, and religious influence on politics declined.
As of the end of the twentieth century, about 73% of Austria's population were registered as Roman Catholic, while about 5% considered themselves Protestants. Both these numbers have been on the decline for decades, especially Roman Catholicism, which has suffered an increasing number of seceders from the church. Austrian Catholics are obliged to pay a mandatory tax (calculated by income—about 1%) to the Austrian Roman Catholic Church, which might act as an incentive to leave the church.
About 12% of the population declare that they do not belong to any church or religious community. Of the remaining people, about 180,000 are members of the Eastern Orthodox Church and about 7,300 are Jewish. It has to be noted that the Austrian Jewish Community of 1938 – Vienna alone counted more than 200,000 - was reduced to solely 4,000 to 5,000 after the Second World War. The influx of Eastern Europeans, especially from the former Yugoslav nations, Albania and particularly from Turkey largely contributed to a substantial Muslim minority in Austria—around 300,000 are registered as members of various Muslim communities. Buddhism, which was legally recognized as a religion in Austria in 1983, enjoys widespread acceptance and has a following of 20,000 (10,402 at the 2001 census).
A 2005 survey among 8,000 people in various European countries showed that Austria is among those nations whose populations maintain the strongest belief in God. 84% of all Austrians state a belief in God, with only the people of Poland (97%), Romania (91%), Portugal (90%) yielding significantly higher numbers. This is a much larger figure than the European average of 71%, or that of Germany (67%).