The tithe was intended to support the Levite priesthood and the Temple and there is no Biblical indication that it applies to modern, ie. Christian, believers.
Deuteronomy 14:22-26 --- You shall surely tithe all the produce from what you sow, which comes out of the field every year. You shall eat in the presence of the Lord your God, at the place where He chooses to establish His name, the tithe of your grain, your new wine, your oil, and the firstborn of your herd and your flock, so that you may learn to fear the Lord your God always. If the distance is so great for you that you are not able to bring the tithe, since the place where the LORD your God chooses to set His name is too far away from you when the LORD your God blesses you, then you shall exchange it for money, and bind the money in your hand and go to the place which the LORD your God chooses. You may spend the money for whatever your heart desires: for oxen, or sheep, or wine, or strong drink, or whatever your heart desires; and there you shall eat in the presence of the LORD your God and rejoice, you and your household.
Micah 6:6 With what shall I come before the Lord, And bow myself before the High God? Shall I come before Him with burnt offerings, With calves a year old? 7 Will the Lord be pleased with thousands of rams, Ten thousand rivers of oil? Shall I give my firstborn for my transgression, The fruit of my body for the sin of my soul? 8 He has shown you, O man, what is good; And what does the Lord require of you But to do justly, To love mercy, And to walk humbly with your God.