Budgeting and forecasting are important planning tools for organizations. Budgeting involves creating financial and operational plans for a specified future period, usually annually. It is done through identifying resources needed to achieve goals. Forecasting uses past data and qualitative expert opinions to predict future demand, sales, or other factors. Accurate forecasting is important for strategic planning, budgeting, operations, and finance. While forecasts are never perfectly accurate, quantitative time series analysis and qualitative expert panels are common forecasting methods used.