When I visit a church (I no longer belong to any church and visit only once in a while), I give what God has put in my heart to give. That might be as little as $1.
The tithe in the Old Testament was NEVER used to finance a church, or to spread the gospel, or for missionary work, etc. The Levitical Tithe, aka The Lord's Tithe, was given to the Levites to keep up The Temple where the Spirit of God lived. The Festival Tithe was a feast where the people consumed the tithe. The Third Year Tithe aka The Poor Tithe was for the poor. NO TITHE was used for any church finances or for spreading God's Word.
In Matthew 25:42-45 Jesus tells us that when you give to the needy/poor, you are giving to Him. Jesus NEVER said that when you give to the church you are giving to Him. Actually, when you give to the church, you are giving to man - a building to worship in, air conditioning to keep cool or heat to stay warm, seating, P.A. system to hear the Word better, salaries for pastor, secretary, etc. That benefits YOU. Now, MAYBE a small part actually goes to help the poor, but that would be a very small percentage.
The Bible does teach that we should give where there is a need. IF your church NEEDS more funds, then you should contribute to help fill that need.
We are to be good stewards of 100% of what God gives to us. That means you should know what your church is doing with the funds you give. IF the church leaders are not good stewards of the money collected (and I have NEVER found any church leaders who are good stewards), then you shouldn't give more than a small amount. Pastors will tell you to give and don't worry what they do with the money. That, my friend, goes AGAINST Biblical teaching.
Most of what I give goes directly to families in need. I am, therefore, giving to God by helping others. When I attend church, I give to PAY my fair share. It is really a payment for services received. Paul even said the teacher deserves to be paid even though Paul said he would rather die than sell the gospel.
YOU have a choice - you can be a generous giver, or you can keep the money for yourself. YOUR PASTOR has a choice - he can give his services without pay or he can ask to be paid for his services. Notice how pastors have a double standard - they want to be paid but want you to give. They claim to have given their whole life to The Lord, and then SELL GOD'S WORD! Now tell me, is that GIVING themselves to The Lord, or is it SELLING themselves to The Lord?