Public deposits refer to unsecured deposits that companies solicit from the public in order to finance working capital needs. Companies offer interest rates on public deposits that are higher than bank rates. There are regulations governing public deposits, including restrictions on maximum deposit amounts, interest rates that can be offered based on deposit duration, and disclosure requirements in deposit advertisements. Companies must comply with rules regarding public deposits before accepting them, such as minimum/maximum deposit periods, limits on deposit amounts, and details to include in deposit receipts.