On January 1 of each year, the Arizona Department of Revenue (ADOR) will add any outstanding interest as of that date to the principal amount of tax still owed. I'm wanting to add an interest component to a long term loan liability account.As an SBA Preferred Lending Partner, we can help you meet your business needs with flexible payment terms and lower interest rates. The department compounds interest annually and applies it in the same manner and at the same time as the IRS. How do director's loans work? A complete guide to understanding and managing director's loans for business success. Use SBA's Lender Match tool to be matched with a participating SBA lender that can provide you with funding at competitive rates and fees. When applying for an SBA 7(a) loan, you must complete SBA Form 1919. Use this tool throughout your homebuying process to explore the range of mortgage interest rates you can expect to receive.