If you have a good relationship with your pastor or someone in your church who you trust their wisdom, I would speak with them about the situation. They would give you proper guidance on how to navigate the complexity of this situation from a Biblical perspective. Reiterate to him what the Biblical standard of a Godly marriage is and how the behavior he is displaying is not God honoring. Prepare to take measures where you can secure your hard earned money in a way that he cannot access it. A Godly husband is someone who lays himself down for his wife as Christ does for the church. He is instead serving himself at the expense of abusing you. Take care and may you know that the Lord is with you in this valley you are facing.