Quick answer
Bill for travel time when you are traveling for a specific client and cannot do other billable work, but agree the rule before the first trip. Common approaches are billing travel at your full rate, at a reduced rate such as half, or as a flat trip fee. Put the choice in the contract and track travel as its own entry.
This guide is written for consultants, contractors, and on-site service providers who travel to client locations and bill for their time who want time tracking to support better planning, billing, reporting, and project decisions.
Decide whether travel time is billable at all
The fair test is opportunity cost. If a trip is dedicated to one client and prevents you from doing other billable work, that time has a real cost and reasonably belongs on the invoice. If you can work productively for another client on the train, bill the work you actually did, not the seat you sat in.
There is no universal law that travel is always billable or never billable in a client engagement. It is a commercial agreement between you and the client. What is not negotiable is disclosing it up front, because a travel charge the client did not expect reads as padding even when it is entirely fair.
Pick one of three travel-billing models
Most service providers use one of three approaches. Choose the one that matches your work and state it plainly in the contract so there is nothing to argue about later.
The reduced-rate model is the most common compromise because it acknowledges that travel has a cost without charging full professional rates for time spent sitting in transit. Whatever you choose, apply it consistently across clients so your billing stays defensible.
- Full rate: travel is billed at your standard hourly rate, best when travel directly displaces billable work
- Reduced rate: travel is billed at a lower rate, such as half, recognising it is not focused client work
- Flat trip fee: a fixed amount per visit that bundles travel time and expenses into one predictable line
- Not billed: travel is absorbed into your rates, common for short local trips you would rather not itemise
Define where travel starts and stops
Ambiguity about the clock is where travel billing goes wrong. Some providers bill portal to portal, meaning from leaving their office or home to arriving back. Others bill only the time beyond a normal commute, or only travel between two client sites in the same day. Pick a definition and put it in writing.
Keep travel expenses separate from travel time. Mileage, flights, parking, and accommodation are reimbursable costs with their own receipts and their own line on the invoice. Time is the value of your hours. Mixing the two into a single vague charge invites disputes and makes the invoice harder to approve.
Know the difference between billing and paying for travel
Billing a client for travel and paying an employee for travel are two different questions. What you charge a client is a contract matter. What you owe an employee for work-related travel is governed by employment law, and in the United States some travel time is compensable under federal rules regardless of what you bill the client.
If you have staff who travel, do not assume the client-billing policy also sets their pay. Check the rules that apply to your workplace, because unpaid but legally compensable travel time is a liability the invoice does not cover.
Track travel as its own entry
Whatever model you choose, log travel as a distinct, labelled entry attached to the client and project, not folded into the working hours. A separate entry lets you apply the right rate automatically, shows the client exactly what they are paying for, and gives you data on how much of your week disappears into transit.
That last point often changes behaviour. Once travel is visible as its own number, a lot of on-site visits turn into video calls, and the trips that remain are the ones genuinely worth the hours. When not to bill travel at all: if the trip is your choice for your own convenience rather than the client's requirement, absorbing it is usually the fairer call.
Where Zeitio fits
Zeitio helps teams connect tracked hours to clients, projects, tasks, reports, approvals, and invoices so time data becomes useful business context instead of another spreadsheet.
Start with simple time entries, review them weekly, and use the data to improve project planning, billing accuracy, and team workload decisions.
Compare Zeitio pricing or create a workspace to try the workflow.
Further reading
FAQs
Is travel time billable to a client?
It can be, if you agreed it in advance. Travel is fairly billable when a trip is dedicated to one client and prevents you from doing other paid work. The key is disclosing the policy in your contract before the first trip, because unexpected travel charges damage client trust even when they are reasonable.
How much should I charge for travel time?
The three common models are your full hourly rate, a reduced rate such as half, or a flat fee per trip. Reduced rate is the most popular compromise. Whichever you pick, apply it consistently across clients and state it clearly in the engagement terms.
Should travel time and travel expenses be billed separately?
Yes. Travel time is the value of your hours and is billed at an hourly rate. Travel expenses like mileage, flights, and parking are reimbursable costs with receipts. Keep them on separate invoice lines so clients can see exactly what each charge covers.
Do I have to pay employees for travel time?
Often yes, and separately from what you bill the client. In the United States, some work-related travel is compensable under the Fair Labor Standards Act regardless of your client-billing policy. Check the employment rules for your workplace rather than assuming the client agreement covers it.
How do I track travel time for invoicing?
Log travel as its own labelled entry attached to the client and project, kept separate from your working hours. That lets you apply the correct travel rate, shows the client exactly what they are paying for, and reveals how much of your week is spent in transit.