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 affects 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.

 

If an arrangement does not qualify for separate accounting of the software license and consulting transactions, then new software license revenue is generally recognized together with the consulting services based on contract accounting using either the percentage-of-completion or completed-contract method. Contract accounting is applied to any arrangements: (1) that include milestones or customer specific acceptance criteria that may affect collection of the software license fees; (2) where services include significant modification or customization of the software; (3) where significant consulting services are provided for in the software license contract without additional charge or are substantially discounted; or (4) where the software license payment is tied to the performance of consulting services.

 

On Demand is comprised of Oracle On Demand, CRM On Demand and Advanced Customer Services. Oracle On Demand provides multi-featured software and hardware management and maintenance services for our database, middleware and applications software at Oracle’s data center facilities or at a site of our customer’s choosing. CRM On Demand is a service offering that provides our customers with our Siebel CRM software functionality delivered via a hosted solution that we manage. Advanced Customer Services are earned by providing customers configuration and performance analysis, personalized support and annual on-site technical services. Revenue from On Demand services is recognized over the term of the service period, which is generally one year.

 

Education revenues include instructor-led, media-based and internet-based training in the use of our products. Education revenues are recognized as the classes or other education offerings are delivered.

 

For arrangements with