We don't give our tithes, we pay them. If you get paid weekly, tithe weekly. If you get paid monthly, tithe monthly. We cannot split our tithes, nor can we designate them for any use other than to the local church. You cannot send half your tithes to the church and the other half to your cousin in the ministry.
Ministers tithe to the district, because that is their authority of protection.
You have robbed God when you give only a tithe. Your growth is severely hindered when you withhold your giving. God loves a cheerful giver. Whatever measure you use to give, God also uses to bless. You cannot use a little Barbie-doll spoon to give and expect a bull dozier return from God.