is probable. Substantially all of our new software license revenues are recognized in this manner.

 

The vast majority of our software license arrangements include software license updates and product support, which are recognized ratably over the term of the arrangement, typically one year. Software license updates provide customers with rights to unspecified software product upgrades, maintenance releases and patches released during the term of the support period. Product support includes internet access to technical content, as well as internet and telephone access to technical support personnel. Software license updates and product support are generally priced as a percentage of the net new software license fees. Substantially all of our customers purchase both software license updates and product support when they acquire new software licenses. In addition, substantially all of our customers renew the software license updates and product support contracts annually.

 

Many of our software arrangements include consulting implementation services sold separately under consulting engagement contracts. Consulting revenues from these arrangements are generally accounted for separately from new software license revenues because the arrangements qualify as service transactions as defined in SOP 97-2. The more significant factors considered in determining whether the revenue should be accounted for separately include the nature of services (i.e., consideration of whether the services are essential to the functionality of the licensed product), degree of risk, availability of services from other vendors, timing of payments and impact of milestones or acceptance criteria on the realizability of the software license fee. Revenues for consulting services are generally recognized as the services are performed. If there is a significant uncertainty about the project completion or receipt of payment for the consulting services, revenue is deferred until the uncertainty is sufficiently resolved. We estimate the proportional performance on contracts with fixed or “not to exceed” fees on a monthly basis utilizing hours incurred to date as a percentage of total estimated hours to complete the project. We recognize no more than 90% of the milestone or total contract amount until project acceptance is obtained. If we do not have a sufficient basis to measure progress towards completion, revenue is recognized when we receive final acceptance from the customer. When total cost estimates exceed revenues, we accrue for the estimated losses immediately using cost estimates that are based upon an average fully burdened daily rate applicable to the consulting organization delivering the services. The complexity of the estimation process and factors relating to the assumptions, risks and uncertainties inherent with the application of the proportional performance method of accounting affect the amounts of revenue and related expenses reported in our consolidated financial statements. A number of internal and external factors can affect our estimates, including labor rates, utilization and efficiency variances and specification and testing requirement changes.