The Edge Fund is a business loan from Edge Fund. The ongoing APR is Interest rates will be between 2-4% per annum (guidelines approved June 13, 2018). Typical credit limit: maximum of eighty (80) percent of the total RHTC equity or $3 million, whichever is lower.. Loan terms: maximum term of five (5) years; annual payments of principal plus interest fully amortized over the term of the loan..