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We delineate conditions which favour multi‐step, or dynamic, estimation for multi‐step forecasting. An analytical example shows how dynamic estimation (DE) may accommodate incorrectly‐specified models as the forecast lead alters, improving forecast performance for some misspecifications. However, in correctly‐specified models, reducing finite‐sample biases does not justify DE. In a Monte Carlo forecasting study for integrated processes, estimating a unit root in the presence of a neglected negative moving‐average error may favour DE, though other solutions exist to that scenario. A second Monte Carlo study obtains the estimator biases and explains these using asymptotic approximations.
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