The minimum salary required by the borrower will vary depending on their personal debt level. A good rule of thumb to budget and estimate a borrower’s personal salary requirement is to multiply their annual personal liabilities by two. For example, a borrower with annual personal liabilities of $15,000 will require a minimum personal salary of $30,000, which is then subtracted from SDE to arrive at cash flow available for debt service. Cash flow available for debt service or CDS is then used to determine how much the borrower can actually borrow for the purchase, which then allows the borrower to estimate how much they can offer the seller.