"It has been a good year for business." The usual rule: put the adverb after the first auxiliary: It HAS basically been a good year for business. Of course, there are always exceptions: Basically, it has been a good year for business. It basically has been a good year for business It has been a good year for business, basically. Since you are a learner, it might be a good idea to follow the rule until you become more fluent in the language.