Even though the term sinking fund is rarely used or is less popular, actually sinking funds are a concept of saving that we often practice in our lives. So in simple terms, sinking funds are a type of savings/budget that is intended for a certain purpose and a certain time. For example, preparing funds to get married next year, opening a business, going on holiday, buying a motorbike, etc. So in a sinking fund we have determined the amount of money that must be collected and the time period or how long we can collect the sinking fund.