How Important Is Accounting In To A Salesman And What Do I Really Need To Understand The Most?

Learning how finance works will help you close more deals, sell bigger items to more sophisticated customers, by helping them choose between outright purchase, leasing, loan finance, other options.
When your product is expensive (by your customer’s standards), they might love your product but be unable to get their finance dept to agree unless you can come up with a finance deal that fits in. This approach also helps you avoid being squeezed for a discount just to ease the deal through.
When you get Really Clever, your company also provides the finance and gets a cut on that part of the deal too!
What you need to concentrate on is to understand what your client is talking about when he asks for a finance deal, how to calculate the various options, and what your procedures are to get a finance proposal made up.
And of course – you are very very interested in knowing how the finance deals affect your commission.