This may seem like a simple questions, but I have never been involved in this end of the business before. When Calculating APY for disclosure and advertising purposes, Reg DD says for "principal" use the amount you expect to be deposited. Would you use the minimum opening deposit for that particular account type? I have no way of knowing how muct they will put in, but I know it has to be at least $100. Any help would be greatly appreciated.

Thanks!

Unless you have some sort of tiered product, the APY calulates the same no matter what the amount.

Just use an amount that's large enough not to present rounding errors because of the small numbers involved.

Thank you!