If you are talking about a small business loan from financial institutions and you have low credit score, your chances are a little tight. You can read here the requirements of Small Business Administration for the small business loans that they guarantee http://www.sba.gov/financing/
1. Equity investment
2. Earnings Requirement
3. Working Capital
5. Resource Management
Here is an excel spreadsheet of SBA’s lending partners http://www.sba.gov/financing/lendinvest/plplend.xls
You must have collateral and equity investments poured into your business, plus a strong business plan with a management team who knows and understands the business.
Collateral can be personal and business assets such as house, receivables, stocks and bonds, furniture and fixtures, among others — that can be sold to pay back the loan. Collateral provide banks with the assurance that they can get their money (or at least parts of it) back, even if you cannot pay. Even SBA-guaranteed loans as well as micro loan programs require some form of collateral to secure a loan. If you do not have collateral, you will need to have a co-signer who has collateral and can pledge to cover your loan in case you default on payment.
Banks, including the Small Business Administration will hardly give you 100% of the financing you need. They need to see that you are invested in your business — which means they need to see you have money before they give you money. Otherwise, it’s an extremely tough deal.