Economic violence (also known as financial violence) is one of the tactics of mental violence, where the aim is to control another person by financial means. Economic violence is considered its own form of violence, although it is also mental violence in a way.
You don't have a bank account or card, even if you want one.
Or, your partner can use your bank account even if you don't like that.
You buy something but must keep it or its price a secret to avoid an argument. You can't happily decide what to buy. You might even have to ask permission to buy something. You must show your transactions to your partner, even if you don't want to.
You cannot decide what and how expensive clothes and things you buy for your children. Child support might be used as a tool for blackmailing.
You pay all or most of the costs of your everyday household even though you don't earn more than your partner. Your partner uses their income only for themselves and their own hobbies.
You have to do something you don't want to just to compensate for the fact that your partner earns more money than you and pays more of the expenses of your common household.
Your partner uses your credit/debit card for their own payments even if it doesn't feel good to you.
Your partner uses your personal information for their online shopping even if you don't like it or give consent to it.
Your partner makes it hard or complicated to work to prevent you from earning your own money. Having your own income would make you more independent.
Your partner makes decisions about your common life and household on their own, even if it's not your common will. Those might be about loans, property, bigger purchases, heritage, travelling, etc.
Yours or your common benefits go to your partner's account, and they decide alone how they are used.