In forex trading, accrual refers to the process of accumulating interest on a trade over time. When a trader holds a position in a currency pair, they may earn or pay interest on that position depending on the interest rate differential between the two currencies. This interest is accrued daily and can have a significant impact on the profitability of trade over the long term. Traders can calculate the accrual on their positions using various tools and techniques, including interest rate differentials, swap rates, and rollover fees. Accrual is an important consideration for traders who hold positions overnight or for extended periods.