Billable Weeks
Billable weeks are the weeks in a year you actually invoice, out of 52 — every week off, bank holiday, and lost week already subtracted. Pricing against 52 weeks instead of your billable weeks hides the cost of the weeks you do not work.
What it means
A year on paper has 52 weeks. A year you actually invoice against has fewer, once time off, bank holidays, illness, and training are subtracted. That smaller number is your billable weeks, and it is what your annual requirement should be divided by, not 52.
The gap between the two numbers is not academic — it is the exact amount every week you do work is quietly underpriced by, if your rate was ever built on 52 weeks instead of your real billable weeks.
A business needs $52,000 a year cleared. Divided by 52 weeks, that is $1,000 a week. The owner actually takes 4 weeks off and loses 2 more to bank holidays, leaving 46 billable weeks — so the real weekly requirement is about $1,130, not $1,000.
Building a rate on 52 weeks and then wondering why a booked-solid year still falls short of the annual target — the shortfall is the weeks off, priced at zero instead of at the real line per billable week.
See also
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