This is a very ancient practice that it is still in use

The practice of providing material support to those who have the mission to proclaim the Gospel began with Christianity itself, with the aim of enabling them to engage fully in their ministry and at the same time take care of the most needy among us (cf. Acts of the Apostles 4:34; 11,29).

At the end of the 8th century, the Anglo-Saxons, after their conversion, they felt so attached to the Bishop of Rome, who decided to stably send an annual contribution to the Holy Father. Thus was born the “Denarius Sancti Petri” (Alms to Saint Peter), which soon spread throughout Europe. This, like other similar practices, passed through many ups and downs over the centuries, until it was blessed by Pope Pius IX, with the Saepe venerabilis Encyclical of 5 August 1871. Currently, this collection takes place throughout the Catholic world, mostly on 29 June or on the Sunday closest to the Feast of Saints Peter and Paul.