<prompt> Human: I opened a high yield savings account with Marcus by Goldman Sachs. They have an APR of 1.80. Im a little confused on whats being added and taken.To be transparent as possible, I deposited 6,000 of my checking money that was losing to inflation. After 30 days, I got 4.68 added as YTD interest however the numbers on file went from 6,000 to 6,003.69. Is there some sort of broker fee that Marcus takes as a percentage or something? I thought that was the point of an online savings account - the bank plays with your money so you get paid in interest. EDIT:SOLVED: I just called. Im a noob at this. But interest in calculated daily. In contrast I deposited that amount on an off day the 17th when interest is added every 15th. I missed out on a certain amount due to scheduling. Now I understand. Thank you all! :D  <response>: Many people here can take a stab at answering and perhaps even be correct, but your best bet is simply to call the bank and ask them directly why the numbers dont match.I find that institutions are very helpful when you have straightforward questions like this.Edit: it very well might be a fee. Looks like it was .01 of the total balance. If this was charged monthly it would be around .11-.12 which is a very standard low annual fee that Ive seen for other investments. Still I suggest that you call the bank. 