Billable hours are the time a client pays for directly: the delivery work named in your contract. Non-billable hours are everything else your business needs, admin, proposals, marketing, learning, that no client pays for but that still consumes your week. Tracking only the billable half hides your true effective rate. This guide defines both with examples and shows how the ratio between them should shape your pricing.
Definitions, With Examples
A billable hour is time you can put on an invoice because it is delivery work the client agreed to pay for: writing the code, designing the page, running the advisory session.
A non-billable hour is time your business needs but no client funds: writing a proposal, doing your bookkeeping, marketing yourself, learning a new skill.
The same activity can fall on either side. A client call about the active project is usually billable; a sales call with a prospect is not.
Why Non-Billable Time Quietly Lowers Your Rate
Your stated rate and your effective rate are different numbers. The stated rate is what you charge per billable hour; the effective rate is your income divided by every hour worked.
Suppose you bill 25 hours a week at a set rate but work 40 hours total. The other 15 are unpaid, so your effective rate is nearly 40 percent below your stated rate.
That gap is invisible if you only track billable hours. Non-billable time does not show on an invoice, but it absolutely shows in your real earnings.
What Counts as Billable
Billable work is anything your contract or agreement says the client pays for. The cleanest test: would the client expect to see this on the invoice?
Direct delivery is clearly billable. Project-specific communication, agreed revisions, and research done specifically for that client usually are too.
When something is ambiguous, the time to decide is before the work, in the scope or contract, not after, in an awkward billing conversation.
Common Non-Billable Categories
Non-billable time is not wasted time; it is the cost of running a business. Naming the categories makes it visible.
- →Admin and finance: invoicing, bookkeeping, taxes, contracts.
- →Business development: proposals, discovery calls, pitches, networking.
- →Marketing: your website, social posts, portfolio, content.
- →Professional development: learning, courses, staying current.
- →Internal operations: email triage, tool setup, planning your own week.
How to Track Both
Tracking both halves is mostly a tagging discipline. Mark each entry billable or non-billable, and tag non-billable work by category so the breakdown is meaningful.
Do not over-categorize. A handful of clear non-billable buckets tells you what you need; twenty micro-categories just add overhead.
A tool that lets you tag and then split a report by billable status turns this into a number you can actually see, rather than a vague sense that admin "takes a while".
Using the Ratio to Price Better, and Target Utilization
Once you track both, you have a billable utilization ratio: billable hours divided by total hours worked. For many solo freelancers a realistic, sustainable target sits somewhere around 60 to 70 percent, not 100.
If your utilization is low, you have two levers: reduce non-billable load, or raise your rate so the billable hours cover the unbillable ones.
This is the practical payoff. The ratio turns a vague worry about unpaid time into a concrete pricing decision you can defend with your own data.
See your billable ratio at a glance
Flowly lets you tag time as billable or non-billable, and its analytics split the two, so your real effective rate stops being a guess.
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Frequently Asked Questions
What percentage of my hours should be billable?
For a solo freelancer, a realistic and sustainable billable utilization sits roughly around 60 to 70 percent of total hours worked. Expecting 100 percent is a trap, since admin, marketing, and business development are unavoidable. If your ratio is far below that range, it is a signal to cut non-billable load or raise your rate.
Is admin time billable?
Generally no. Your own invoicing, bookkeeping, taxes, and tool setup are the cost of running your business, not work a client agreed to pay for. Project-specific admin is a gray area: decide in the contract whether it is billable, rather than leaving it to an awkward conversation later.
How do I track non-billable hours?
Tag every time entry as billable or non-billable, and tag non-billable work by a small set of categories such as admin, marketing, and business development. A tool that can split a report by billable status then turns the breakdown into a clear number instead of a vague impression.
Do billable hours matter if I charge fixed fees?
Yes. On a fixed-fee project you still need to know how many hours, billable and non-billable, the engagement consumed. That tells you whether the fee was profitable and gives you the data to price the next fixed-fee project accurately instead of guessing.