If you want to realize the above benefits, your first step is to establish a meaningful set of non-billable categories. We recommend the following steps (based on a methodology proposed by Berg & Jackson):
- Build a long list: Brainstorm with your team to create a comprehensive list of recurring activities that take place outside the core work of the business.
- Group and label: Find the smallest number of high-level categories that connect the various items together (e.g. restocking the stationery cupboard → Office Management).
- Prioritize and simplify: Whittle the list down to fewer than eight categories by prioritizing those that are strategically important (i.e. meaningful to track).
- Review and refine: Periodically remove, merge and replace categories that have served their purpose in order to reflect the changing dynamics of your business as it grows.
As already pointed out, you are definitely creating more work for yourself when you go down the path of comprehensive time-tracking. The consolation is that you are merely forcing yourself to do work that should be done anyway as part of successful business management.
You cannot afford to have billable work crowd out non-billable activity, nor vice versa. So where is the ideal balance between the two?
There are some general rules that apply in most businesses. For example, vacation, sick days, and public holidays will normally account for 6-8% of available time. Mandatory admin and overhead activities typically add another 10%, leaving the basic availability of a resource at a little over 1600 hours per year.
If everyone is billing 1600 hours (80% billability), there will be no time to grow the business or develop the staff, nor any capacity for additional client demands. Low billability, however, is dangerous as profit declines steeply in the presence of fixed costs.
Hence, 60-80% is seen as a good range to aim for the firm overall. As the firm grows and develops specialization and management layers, this will vary across resources.
Senior management, being more concerned with non-billable Grow/Manage the Firm activities, as well as Client Management tasks, will obviously have a lower billability target. And of course, support staff may not have a billability target at all.
The beauty of a time-based revenue structure is that it enables you to experiment with different assumptions on billability in Excel at the beginning of the year. You can see whether your billability is too high or too low. And by tracking non-billable time, you can understand why.