miscalculate
verb (used with or without object)
to calculate or judge incorrectly.
Used to describe an ongoing action or continuous state that was happening at a specific time in the past.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Wells Fargo found in an internal review that its underwriting tool was miscalculating attorneys’ fees.
From Slate ● Aug. 6, 2018