In the covenant of Nehemiah 10, what amount did the people pledge yearly for the service of God's house?

Answer: A third of a shekel

In their firm covenant, the people bound themselves to give a third of a shekel each year for the service of the house of God.

“We also place ourselves under the obligation to contribute a third of a shekel yearly for the service of the house of our God:”— Nehemiah 10:32 (BSB)