by double entry bookkeeping, they show the balance of payments accounts are always balanced. Sources of funds for a nation, such as exports or the receipts of loans and investments, are recorded as positive or surplus items. Uses of funds, such as for imports or to invest in foreign countries, are recorded as negative or deficit items. When all components of the BoP accounts are included they must sum to zero with no overall surplus or deficit. For example, if a country is importing more than it exports, its trade balance will be in deficit, but the shortfall will have to be counterbalanced in other ways – such as by funds earned from its foreign investments (but not the investments themselves, since foreign investments are deficit items), by running down currency reserves or by receiving investments or loans from other countries. While the overall BoP accounts will always balance when all types of payments are included, imbalances are possible on individual elements of the BoP, such as the current account, the capital account excluding the central bank's reserve account, or the sum of the two. Imbalances in the latter sum can result in surplus countries accumulating wealth, while deficit nations become increasingly indebted. The term "balance of payments" often refers to this sum: a country's balance of payments is said to be in surplus (equivalently, the balance of payments is positive) by a specific amount if sources of funds (such as export goods sold and bonds sold) exceed uses of funds (such as paying for imported goods and paying for foreign bonds purchased) by that amount. There is said to be a balance of payments deficit (the balance of payments is said to be negative) if the former are less than the latter. A BoP surplus (or deficit) is accompanied by an accumulation (or decumulation) of foreign exchange reserves by the central bank. Variations in the use of term balance of payments Economics writer J. Orlin Grabbe warns the term balance of payments can be a source of misunderstanding due to divergent expectations about what the term denotes. Grabbe says the term is sometimes misused by people who aren't aware of the accepted meaning, not only in general conversation but in financial publications and the economic literature. A common source of confusion arises from whether or not the reserve account entry, part of the capital account, is included in the