What font is best to use when typing business letters and other correspondence?
If "best" means most easily read and compact (many words in small space) then Times New Roman at 12 pt. is a good rule of thumb. The font was created for the New York times because it was easily read and because it is compact - great for a newspaper.Otherwise, choice of font may be guided by the broader context of your corporate image, in which you establish normative visual cues which are associated with your business, however subconsciously they may work.In our business, we have settled on Cambria, which appears in various weights and styles in our letterhead, publications, etc. It is a bit "fatter" than Times, which makes it easy to read.So - think about EVERYTHING, and try various fonts in various styles and sizes, to determine which is really YOU. But bear in mind that for web pages you will either need to substitute a widely available font (we use Georgia), or otherwise use web fonts which are uploaded to the browser automatically. Otherwise, if you are too far off the beaten path of widely used fonts, be aware that the client system will use something else if the font is not locally available. That's not necessarily a problem, but anticipate the possibility that Arial (for sans-serif) and Times (for serif) will probably be the go-to fonts if yours is not on the client system. Do some tests to see the actual results. Remember that, for PDF's, the font you use may be attached to the document itself.Hope that helps.