Forecasting the daily exchange rate of the UK pound sterling against the US dollar

Abstract
This paper is the first to use an economic theory-based model—the monetary model of exchange rates within a rational expectations present value framework—to forecast the daily exchange rate of a major currency. Our out-of-sample forecast evaluation period, spanning from 1990 to 2024, is longer than that of any other exchange rate forecasting study. We find that our model's forecasts outperform the random walk across all forecasting horizons, ranging from one day to five years. Moreover, a trading strategy based on our model's forecasts yields economically and statistically significant excess returns, surpassing those of the carry trade strategy.