Free Billable Hours Invoice Template — Bill by the Hour, Download PDF Instantly

Step 1 — Choose Your Invoice Layout

Select from Classic, Sky, Professional, or Minimal. All four produce a clean, watermark-free PDF. Choose the design that best reflects your professional brand — a law firm might prefer Professional (dark formal), while a freelance designer might prefer Minimal or Sky.

Step 2 — Add Your Professional Details

Enter your name or business name, email address, phone number, and location. Upload your logo if you have one — branded invoices are processed faster and perceived as more professional. For sole traders, your name is your business name.

Step 3 — Add Your Client's Details

Enter the client's company name, billing contact, email, and address. For corporate clients, double-check that you're billing the correct legal entity — billing the wrong company is a common cause of invoice rejection.

Step 4 — Set Invoice Number, Dates & Currency

Assign a unique invoice number (e.g. INV-2026-047), set the invoice date, and add a payment due date. Net 14 is standard for professional services; Net 30 for larger engagements or corporate clients. Select your billing currency — GBP, USD, EUR, INR, AUD, or any of 150+ supported currencies.

Step 5 — Add Billable Hours as Line Items

This is the core of the template. Each line item represents a task or category of work:

• Description field: Write exactly what the task was (e.g. "Frontend development — React dashboard build, Week 1")
• Qty field: Enter the number of hours worked (e.g. 32)
• Rate field: Enter your hourly rate (e.g. £85.00/hr)
• Total: Calculates automatically (32 × £85 = £2,720)

Add as many line items as needed — one per task, per day, per week, or per team member. The subtotal and grand total update automatically.

Step 6 — Mix Hourly & Fixed Fees on the Same Invoice

Need to charge a fixed fee for a deliverable alongside billable hours for additional work? Simply add the fixed fee as a line item with quantity 1 and the full fixed amount as the rate. Both calculate together in the total automatically.

Step 7 — Add Tax

Apply VAT, GST, or any applicable tax as a percentage or flat amount. For UK professionals, add "VAT (20%)." For Indian professionals, add "GST (18%)." For Australian professionals, add "GST (10%)." The tax amount and gross total calculate automatically.

Step 8 — Add Notes, Timesheet Reference & Payment Terms

Write a note confirming that a timesheet is attached ("Timesheet attached. All hours rounded to nearest 15 minutes."). Add your payment terms and bank transfer details in the Terms field. Mention your preferred payment method clearly.

Step 9 — Download PDF & Send to Client

Click Download PDF — your billable hours invoice downloads instantly as a clean, professional, watermark-free PDF. Attach it to your invoice email alongside your timesheet, and send to the client's accounts payable contact.

Hours × Rate Auto-Calculation

Enter the number of hours worked and your hourly rate per line item — the total calculates automatically. No manual maths, no formula errors, no risk of charging the wrong amount.

Multiple Line Items for Different Tasks & Rates

Bill different tasks at different rates on the same invoice. Senior consulting time at £150/hr, junior support at £60/hr, project management at £80/hr — all on one clean invoice. Add unlimited line items.

Mix Hourly & Fixed-Fee Billing

Charge hourly for ongoing support and a fixed fee for a specific deliverable — both on the same invoice. Use quantity 1 with the flat fee as the rate for any fixed-price line items.

VAT, GST & Tax Support

Add the applicable tax for your country — UK VAT (20%), Indian GST (18%), Australian GST (10%), UAE VAT (5%), or any custom tax label and rate. Tax calculates automatically on the subtotal.

4 Professional Invoice Designs

Classic, Sky, Professional, and Minimal layouts — all produce sharp, client-ready PDFs that look like they came from premium legal or professional billing software.

Timesheet Note Field

Reference your attached timesheet directly in the invoice notes — "Timesheet for billing period [date range] attached." This is standard practice for legal, consulting, and IT invoicing.

Logo Upload for Professional Branding

Upload your firm's or personal brand logo (PNG, JPG, SVG) for a fully branded hourly invoice. Branded invoices from professional services firms are processed faster by corporate accounts payable teams.

150+ Currencies

Bill in GBP, USD, EUR, INR, AUD, CAD, AED, SGD, and 140+ more. Essential for consultants and freelancers working with international clients.

No Watermark on PDF

Your downloaded invoice is completely clean — no InvoiceHub4U branding. It looks indistinguishable from an invoice produced by expensive legal or consulting billing software.

No Signup Required

Create a professional billable hours invoice in minutes without registering an account. No email, no password, no subscription. Free every time.

Lawyers & Solicitors

Legal professionals have billed by the hour for over a century. Lawyers use detailed billable hours invoices to charge clients for research, drafting, client calls, court appearances, and case management — each task billed at the relevant fee-earner's hourly rate. Transparency in legal billing is both a professional expectation and, in many jurisdictions, a regulatory requirement.

Accountants & Bookkeepers

Accountants bill hourly for tax preparation, financial statements, audits, management accounts, and advisory work. Bookkeepers bill by the hour for data entry, reconciliation, and payroll processing. An itemised hourly invoice gives clients confidence that the time charged reflects the work done.

IT Consultants & Software Developers

IT professionals and developers working on system implementations, software builds, bug fixes, and technical support engagements bill by the hour when scope is variable. A detailed breakdown — "API integration: 12 hours @ £85/hr" — gives technical clients full visibility of where development time was spent.

Freelance Web Designers & UI/UX Designers

Designers billing for wireframing, prototyping, revisions, and creative direction on open-ended projects use hourly billing to ensure every iteration is compensated. It's especially useful for ongoing retainer relationships where the scope changes week to week.

Marketing & PR Consultants

Marketing consultants billing for strategy sessions, campaign management, content creation, and reporting work use hourly invoices when the scope of work is flexible or evolves over time. Monthly retainers billed as hourly summaries are common.

Business & Management Consultants

Management consultants, strategy advisors, and business coaches bill hourly for workshops, interviews, research, analysis, and report writing. A detailed billable hours invoice shows exactly how the engagement fee is justified.

Architects & Engineers

Architects and structural engineers bill hourly for feasibility studies, design development, planning applications, site supervision, and project management — each stage billed at the relevant professional's rate.

HR & Recruitment Consultants

HR consultants bill for policy development, training delivery, redundancy support, and recruitment work. Recruitment consultants sometimes bill by the hour for search and selection work on retained assignments.

Therapists, Psychologists & Coaches

Mental health professionals, life coaches, business coaches, and personal trainers bill clients per session or per hour for their professional time. A clear, professional invoice builds credibility with clients.

Researchers & Analysts

Academic researchers, market research professionals, and data analysts billing for research design, data collection, analysis, and reporting use hourly invoices for open-ended research engagements.

Virtual Assistants

VAs billing clients for administrative support, scheduling, email management, and task completion work use hourly invoices — typically weekly or monthly, summarising hours worked across all tasks.

Freelancers on Retainer

Any freelancer on a monthly retainer who bills a fixed number of hours per month — or tracks and bills actual hours worked — uses a billable hours invoice to document and charge for their time.

Time-Tracking Apps (Recommended)

Dedicated time-tracking tools make billable hour recording fast, accurate, and easy to review before invoicing:

• Toggl Track — Free, simple, works on desktop and mobile. Most popular for freelancers
• Clockify — Free unlimited time tracking with team features
• Harvest — Integrates with project management tools; good for agencies
• Timely — AI-powered automatic time tracking
• Freckle (noko) — Simple, beautiful time tracking for solo professionals
• RescueTime — Automatic tracking of time spent across apps and websites
• Hubstaff — Advanced tracking with screenshots, for remote teams

Spreadsheet Time Logs

A simple spreadsheet with columns for date, task, start time, end time, and hours worked is perfectly adequate for many freelancers. Export the summary to your InvoiceHub4U invoice weekly or monthly.

Paper or Notebook Logs

Simple and effective for professionals who prefer analog systems. A dated notebook entry per client, per task, transferred to your invoice at billing time. Less accurate than digital tools but better than no tracking at all.

Project Management Tool Time Logs

Tools like Asana, Jira, Monday.com, and ClickUp have built-in time-tracking features. Log time against tasks as you work — export the time report at the end of the billing period and use it to populate your billable hours invoice.

Best Practice — Log Time Daily

The biggest mistake with billable hours tracking is logging time from memory at the end of the week or month. Memory is unreliable — you will undercount, which means underbilling. Log time at the end of each work session or at least daily for accurate billing.

1. Always Agree Your Rate in Writing Before Starting

A written agreement — even an email confirmation — setting out your hourly rate, billing increment, and payment terms protects you legally and prevents "I didn't know it would cost that much" disputes.

2. Define Your Billing Increment

Decide whether you bill in 15-minute, 30-minute, or 60-minute increments — and stick to it consistently. Most legal and consulting professionals bill in 6-minute units (1/10th of an hour). Freelancers typically use 15 or 30-minute increments.

3. Break Down Line Items by Task, Not Just "Hours Worked"

An invoice that says "40 hours @ £85/hr = £3,400" gives the client no insight into what was done. Break it down: "Frontend development: 20hrs, API integration: 12hrs, Testing & QA: 8hrs." This transparency dramatically reduces disputes and invoice queries.

4. Always Attach a Timesheet

A timesheet — whether from Toggl, a spreadsheet, or a handwritten log — attached to your invoice is the professional standard. It answers "what did you actually do?" before the client has to ask, and makes your invoice far harder to dispute.

5. Invoice Regularly — Weekly or Monthly

Don't let billable hours stack up for months before invoicing. Regular billing (weekly for active projects, monthly for retainers) keeps your cash flow healthy and reduces the shock to clients when large invoices arrive unexpectedly.

6. Distinguish Between Billable and Non-Billable Time

Not all time spent on a client is billable. Internal admin, unbilled email, rework caused by your own errors — these are typically non-billable. Be clear in your engagement terms about what's billable and what isn't. Clients appreciate this clarity.

7. Include a Date Range in the Invoice

Reference the billing period on your invoice — "Hours billed: 1 May 2026 – 31 May 2026." This helps the client match your invoice to the work period and reconcile with their project records.

8. Cap Your Hours When Appropriate

For clients on a budget, consider agreeing a maximum hours cap per month or per project phase. This protects the client from invoice shock and ensures they have visibility of costs before they escalate.

9. Round Consistently

Round hours to the nearest 15 minutes, and note this on the invoice — "All hours rounded to the nearest 15 minutes." Consistency prevents disputes and sets clear expectations.

10. Send to the Right Person

Always send the billable hours invoice to the client's accounts payable contact — not just your day-to-day project contact, who may not forward it to the payment team. For corporate clients, ask for the correct billing contact and PO number before starting work.

"I didn't expect it to cost this much"

Prevention is better than cure. Send a weekly or fortnightly hours summary to clients during active projects so they can see the running total before the invoice arrives. No surprises = no disputes.

"I don't recognise some of these tasks"

This is why detailed task descriptions and attached timesheets matter. If the client queries a line item, you should be able to show the timesheet entry that supports it. With no documentation, you're relying on goodwill.

"We only agreed X hours"

If the client believes a cap was agreed, your written engagement terms and email trail are your evidence. Always confirm scope changes and additional hours in writing before proceeding.

"The work wasn't completed satisfactorily"

Keep a clear record of all deliverables, sign-offs, and client approvals during the project. If the client approved work at each stage, it's very difficult to dispute quality after the invoice is issued.

"We don't have a PO for this"

Large corporate clients require a Purchase Order number to process any invoice. If you send an invoice without a PO, it will sit in accounts payable limbo indefinitely. Always ask for the PO before starting work.

Lawyer / Solicitor Billable Hours Invoice Example

Legal research — Employment tribunal case          14.0 hrs  @ £250/hr  =  £3,500.00
Drafting witness statements                         8.5 hrs  @ £250/hr  =  £2,125.00
Client conference calls (3 sessions)                2.0 hrs  @ £250/hr  =    £500.00
Correspondence with opposing counsel                1.5 hrs  @ £250/hr  =    £375.00
                                          Subtotal:                        £6,500.00
                                          VAT (20%):                       £1,300.00
                                          TOTAL:                           £7,800.00

IT Consultant / Developer Billable Hours Invoice Example

Frontend development — React dashboard (Week 1)    32.0 hrs  @ £85/hr   =  £2,720.00
API integration — REST endpoints                   12.0 hrs  @ £85/hr   =  £1,020.00
Code review and QA testing                          6.0 hrs  @ £85/hr   =    £510.00
Project management and client calls                 3.0 hrs  @ £60/hr   =    £180.00
                                          Subtotal:                        £4,430.00
                                          VAT (20%):                       £886.00
                                          TOTAL:                           £5,316.00

Marketing Consultant Billable Hours Invoice Example

Brand strategy workshop (full day)                  8.0 hrs  @ £120/hr  =    £960.00
Competitor analysis and market research             6.5 hrs  @ £120/hr  =    £780.00
Content strategy document — draft + revisions       5.0 hrs  @ £120/hr  =    £600.00
Monthly performance reporting                       2.5 hrs  @ £100/hr  =    £250.00
                                          Subtotal:                        £2,590.00
                                          VAT (20%):                       £518.00
                                          TOTAL:                           £3,108.00

Freelance Designer Billable Hours Invoice Example

UX wireframing — mobile app (10 screens)            9.0 hrs  @ £65/hr   =    £585.00
UI design — high fidelity mockups                  12.0 hrs  @ £65/hr   =    £780.00
Client revisions — Round 1 and Round 2              4.5 hrs  @ £65/hr   =    £292.50
Design handoff — Figma file and assets              1.5 hrs  @ £50/hr   =     £75.00
                                          Subtotal:                        £1,732.50
                                          VAT (20%):                       £346.50
                                          TOTAL:                           £2,079.00

What Are Billable Hours?

Billable hours are the hours worked on a client project or task that can be charged to the client. Not all time worked is billable — internal admin, unbilled emails, and rework caused by your own mistakes are typically non-billable.

What is an Hourly Rate Invoice?

An hourly rate invoice (also called a time-based invoice or billable hours invoice) is an invoice where the amount charged is calculated by multiplying hours worked by the agreed hourly rate.

What is a Timesheet?

A timesheet is a detailed log of hours worked, broken down by task, date, and duration. It is attached to a billable hours invoice as supporting evidence of the time charged.

What is a Retainer?

A retainer is a pre-agreed monthly fee that a client pays to have access to a professional's time — either a fixed number of hours per month or an ongoing availability fee. Retainers are often invoiced monthly using a billable hours format.

What is a Billing Increment?

The billing increment is the smallest unit of time you charge for — typically 6 minutes (0.1 hours), 15 minutes (0.25 hours), or 30 minutes (0.5 hours). The increment must be stated or agreed upfront.

What is Blended Rate Billing?

Blended rate billing is when multiple team members working at different hourly rates are billed at a single average (blended) rate per hour, rather than listing each individual's rate separately.

What is a Non-Billable Hour?

A non-billable hour is time spent on a client or project that is not charged to the client — for example, time spent on business development, unbilled emails, or correcting your own errors. Managing non-billable vs billable time is key to profitability.

What is Write-Off in Hourly Billing?

A write-off is when time that was worked and logged is deliberately not billed to the client — for example, if a task took longer than expected due to your own inefficiency. Keeping write-offs low is a key performance metric for law firms and consulting practices.

What is a Fee Earner?

A fee earner is a professional whose time is directly billable to clients — as opposed to support staff whose time is non-billable overhead. In a law firm, solicitors and partners are fee earners; receptionists and administrators are not.

What is Realisation Rate?

The realisation rate is the percentage of recorded billable hours that are actually billed and collected. A 100% realisation rate means every logged hour was billed and paid. Write-offs and discounts reduce the realisation rate below 100%.