Addl Finance is a common abbreviation for Additional Finance, and people in banking and finance use it frequently. It is when you seek additional financial help, normally required for times when extra money is needed for things such as growing the business, facing emergencies, or dealing with overrun budgets. A business could respond by getting a loan or receiving extra equity from investors. Some individuals end up using an additional mortgage or credit facility. You get greater choice with your finances, but this may come with special terms, a changed interest rate, and some new risks.