leads and lags
noun[plural]
FINANCEukusincreasesorreductionsin thespeedat which somethinghappens, forexamplein thepaymentofmoneyor thetimein which apieceofworkiscompleted:
The CBI'schiefeconomicadvisersaid theleadsandlagsin getting thespendingplansthroughWhitehallcoulddelayimplementation.
Firms useleadsandlagsinforeigntradewhen acurrencyisexpectedtomovein onedirectionor the other.