Bring ye all the tithes into the storehouse, that there may be meat in mine house, and prove me now herewith, saith the Lord of hosts, if I will not open you the windows of heaven, and pour you out a blessing, that there shall not be room enough to receive it. Malachi 3:10 KJV
Give God His just due. The Tithe (10% of your gross inctease) belongs to Him. Walk in covenant with God and receive His blessing to prosper.
The Tithe is Holy and to keep it for yourself is to break covenant with God and to bring a curse upon yourself and your family.
But thou shalt remember the Lord thy God: for it is he that giveth thee power to get wealth, that he may establish his covenant which he sware unto thy fathers, as it is this day. Deuteronomy 8:18 KJV