Small Business Administration loans can be an incredible financial resource for business owners who want to grow or sustain their companies. Understanding SBA loan interest rates is an important part of determining just how helpful this type of financing can be. Lendio explores the most popular loan programs. SBA 7(a) loans can be used for general working capital needs and have interest rates that can either be variable or fixed. SBA 504 loans are designed to purchase assets that help with job creation or business growth, such as new facilities, machinery, or renovating an existing property. Microloans from the SBA help newer small businesses with startup or expansion costs. SBA Express loans allow for a shorter approval time, so you can get faster access to capital. In fact, you'll get an initial response within 36 hours. The SBA Community Advantage loan program was created to help businesses in underserved markets.