Links to sub pages

[Caffeine_Marketing]

Hi, if I am building links to pages outside of my home page, is that link still a referring domain.  Also, does that link also help the SEO of the keywords targeted on the home page.  Most of our links are home page targeted and we need to start ranking on subpages but need to know if these links only help the page they are aimed at

[effectdigital]

No, a domain is something like yoursite.com. Referral means coming from outside. If you have a link from yoursite.com pointing to another page on yoursite.com, in terms of SEO that is not counted as a 'referring' page (or domain). I don't know how Moz's tool views this, but in terms of how you should look at it, it's not to be considered a referring domain when you are doing domain-internal linking

Internal site-link structure can help to push more deeply nested URLs up Google's rankings for more niche keywords (to the point where they should rank appropriately, not beyond that point). Keep in mind though, that links move SEO authority from one place on the web to another. A fraction of the linking URL's PageRank will be lost as it is transmitted to lower-level pages, so don't overplay this tactic or run with it too far, or your linking address(es) may start to slip down (slightly)

If your site is big and well known with lots of SEO authority and trust, then there's not a lot to worry about. If your site is relatively green, you might see no benefit from the work or you might see higher level pages bleeding out