You can assign a job to a specific type of work, then produce a Profit
& Loss report and sort it by job type. You can then decide if you want to
refocus your marketing or other efforts in the direction of your most
profitable types of work.
To do this task
Choose Reports > Company & Financial > Profit & Loss by Job.
Click the Customize Report button at the top of the report.
Click the Display columns by drop-down arrow on the Display tab and then click Total only at the top of the list.
Click the Filters tab.
In the Filter list, click Job Type.
Click the Job Type drop-down arrow and then click the job type to analyze.
This report gives you the total amount of income and expense by a specific
job type. The report will not include any projects or jobs that don't have
a job type entered into the Job Type field.
To analyze this report, run a separate report for each job type and then
compare the Gross Profit or Net Income for each type. The report with the
highest gross profit shows the type of work that you might want to focus your
marketing efforts towards in the future.
Creating and categorizing job