Work gets done, but forgotten hours, manual calculations, and delayed invoices can cost businesses money. Time tracking software with invoicing helps close this gap by recording billable hours, applying the right rates, and simplifying invoice preparation.
With different tools offering time tracking, billing, project budgets, and payment management, choosing the right solution depends on your workflow. This guide explains how the software works, which features to look for, and how to choose the best option for your business.
What Is Time Tracking Software with Invoicing?
Time tracking software with invoicing is a single tool that records the hours you or your team spend on client work and converts those hours into a client-ready invoice. Instead of exporting a timesheet, pasting it into a template, and doing the maths by hand, the software multiplies logged time by the agreed rate, adds taxes and expenses, and produces a PDF or payment link.
A typical setup has three connected parts:
- A time tracker (timer, manual entry, or automatic tracking) that tags each hour to a client, project, and task.
- Billable rates set per client, project, task, or team member, with a billable or non-billable flag on every entry.
- An invoice generator that pulls approved hours, applies rates and tax, and lets you send, track, and mark invoices as paid.
Why Manual Billing Quietly Costs You Money
Most unbilled time is never stolen; it is forgotten. A widely cited Accelo study found that professionals who log their hours at the end of the day recall roughly two-thirds of what they did, and those who wait until the end of the week recall barely a third. The same study put the cost of unbilled work in US service businesses at about $7.4 billion per day.
For a small team, the leak looks like this:
| Habit | What it costs a 5-person agency billing $80/hour |
|---|---|
| Logging time from memory on Friday | 1 to 2 forgotten hours per person per week, roughly $1,600 to $3,200 a month |
| Copying hours into a separate invoicing tool | 2 to 3 admin hours per invoice run, plus copy-paste errors |
| Rounding down "to be fair" to the client | 10 to 15 minutes lost per task, never recovered |
| Late or disputed invoices | Payment delayed 2 to 4 weeks; 71% of freelancers report trouble getting paid at some point (Freelancers Union) |
Time tracking software with invoicing attacks all four at once. Time is captured while the work happens, rates are applied automatically, and the invoice carries a line-by-line record that clients rarely dispute, because they can see exactly what they are paying for.
8 Features to Look for in Time Tracking Software with Invoicing
Not every tool that says "time and billing" does both well. These are the features that separate software you will still be using in a year from software you will abandon by February.
1. Automatic and manual time capture
A timer is the minimum. The better tools also capture time automatically in the background, so a developer deep in code or a designer in Figma does not have to remember to press start. Manual entry should still be there for meetings, calls and work done away from the desk.
2. Billable rates at every level
You should be able to set an hourly rate per client, per project, per task and per person, and let the most specific rate win. A senior consultant and a junior analyst on the same project usually bill at different rates; the software should handle that without a workaround.
3. Billable vs non-billable tagging
Internal meetings, admin, and training are real work but not client work. A one-click billable vs non-billable flag keeps invoices clean and shows you what share of the week actually earns money. Teams that track this ratio typically aim for 70 to 80% billable time.
4. One-click invoice generation
Select a client, pick a date range, and the invoice should build itself from approved hours, grouped by project or task. Look for editable line items, tax rates, discounts, multiple currencies, and your own logo and numbering.
5. Invoice status tracking
Draft, sent, viewed, paid, overdue. If you cannot see at a glance which invoices are unpaid, you will spend Monday mornings in your email instead of on billable work.
6. Approval workflow
A manager should be able to review and approve timesheets at the end of each work phase before they hit an invoice. This stops the awkward call where a client points out an entry that should never have been billed.
7. Reports that tie time to revenue
Beyond "who worked how many hours," you want billable amount per client, project profitability against budget, and unbilled hours sitting in the system. The project management features show budgeted versus actual time per project so you spot overruns before you invoice.
8. Integrations with accounting and payments
Export to QuickBooks, Xero or Zoho Books, and accept payment via Stripe or PayPal from the invoice itself. Every hand-off you remove is one fewer place for a number to go wrong.
Tired of chasing hours before you can chase payments?
Desklog tracks time automatically and turns it into billable records you can invoice without the spreadsheet step.
Start your free Desklog trialHow Time Tracking and Invoicing Work Together: 5 Steps
Here is the full loop, from the first minute of work to money in the bank. Most tools follow this order even if the buttons have different names.
- Set up clients, projects, and rates. Create a client, add their projects, and set an hourly rate or a fixed project fee. Decide which tasks are billable by default.
- Track time as you work. Start a timer, let the automatic tracker run, or add entries by hand. Each entry carries a client, project, task, and note, so nothing has to be reconstructed later.
- Review and approve the week. A lead or project manager checks the timesheet, fixes mis-tagged entries, and approves it. Approved hours are locked.
- Generate the invoice. Choose the client and period. The software pulls approved billable hours, applies rates, taxes, and expenses, and produces a numbered invoice you can edit before sending.
- Send, track, and get paid. Email the invoice or share a payment link, watch its status move from sent to paid, and send a reminder when it goes overdue.
Who Needs Time Tracking Software with Invoicing?
The short answer is anyone who sells time. The longer answer depends on how many people are tracking and how many clients are being billed.
Freelancers and consultants
You are the whole finance department. The win for freelance work is speed: finish a project on Friday, invoice by Friday afternoon, and keep a clean record if a client questions a line item. Hourly, retainer and fixed-fee billing should all be possible in the same tool.
Agencies and professional services firms
Multiple agencies, multiple rates, multiple clients. You need per-person rates, approval workflows, and project-level budgets so you can see that the redesign for Client A is already 20 hours over before the invoice goes out and the margin disappears.
Remote and hybrid teams
Managers of remote and hybrid teams cannot walk past a desk to see how work is going, so they depend on records instead. Start with a simple view of the day, such as app and website use and idle time, and add screenshots only if you need them. Tell the team what is tracked before you begin, and agree on working hours so the tool is not running when people are off the clock. If your team splits its week between home and the office, look at the same data for both groups, so no one feels singled out for working remotely.
IT, software and outsourcing companies
Dedicated-developer and staff-augmentation contracts are usually billed monthly on tracked hours, often with client-facing reports attached. Detailed, exportable timesheets and client-ready reports are the features that keep these relationships smooth.
Law firms, accountants and architects
Billing in 6-minute or 15-minute increments, trust accounting and strict audit trails are the norm. Law firms especially should look for configurable rounding rules and locked timesheets after approval.
How to Choose Time Tracking Software with Invoicing
Most teams compare feature lists and pick the longest one. A better way is to answer five questions about how you work, then check how each tool answers them.
1. How does time get into the system?
If your team forgets to start timers, you need automatic capture, not a better timer.
What to look for: time recorded in the background and tagged to a project automatically, with manual entry for meetings and offline work.
2. How do you bill?
Hourly per person, per project, fixed fee, retainer, or a mix.
What to look for: billable and non-billable flags on every entry and rates you can set at the project or task level so one timesheet serves all your clients.
3. How many people and clients?
A freelancer needs speed; a 20-person agency needs structure.
What to look for: approvals, project budgets, and client-wise reports that are there when you need them, without a steep setup for a small team.
4. Where does the money flow next?
The tool may invoice natively or hand off to your accounting software. Either way, the rule is the same.
Either way, check one thing: approved hours leave the system with rates already applied, so nothing is retyped.
5. Do you need proof of work?
Dedicated-team and outsourcing contracts often require activity evidence alongside the invoice.
What to look for: app and URL usage or optional screenshots attached to tracked hours, so "What did they do all day?" is answered before it is asked.
How Desklog Handles Time Tracking and Billing
Desklog started as an automated time tracker for remote and in-office teams, and billing grew out of what customers asked for next: "I can see every hour. Now help me charge for it." Here is how the pieces fit today.
Automatic time capture, no timer required
Desklog records active and idle time in the background from the moment a team member logs in, and tags it to the project and task they are working on. Nobody has to remember to start a timer, which is where most forgotten hours come from. Manual entries and offline time cover meetings and calls.
Billable and non-billable hours per project
Every project and task can be marked billable or non-billable, with a rate attached. Desklog separates the two in its timesheet reports, so you see billable hours per client, per project and per person for any date range.
Project budgets and cost tracking
Set an hour or cost budget on each project and Desklog shows budgeted versus actual time as the work progresses. Agencies use this to catch scope creep weeks before the invoice, when it can still be discussed with the client.
Invoice-ready reports and exports
Approved billable hours, grouped by client, project, and date range, export as PDF, Excel or CSV, ready to attach to an invoice or import into your accounting tool. Each export lists the task, person, hours, and rate, so clients see exactly what they are paying for and you never retype a number.
Productivity context behind every hour
Because Desklog also tracks app and URL usage and, optionally, screenshots, a billed hour comes with evidence of the work behind it. Clients on dedicated-team contracts especially value this.
Start tracking and billing every hour with Desklog
24/7 Support • Cancel Anytime • 14-day Free Trial
Start your FREE trialTrusted by 15,000+ customers worldwide
Conclusion
Time tracking software with invoicing closes the gap between work done and work billed. Hours captured as they happen, tagged to the right client and rate, and approved before billing turn into invoices that go out on time and get paid without a fight.
When you compare tools, start with how time gets into the system, because that is where money is lost first. Desklog covers the whole chain: automatic capture that never depends on memory, billable and non-billable hours per project, budget tracking, and invoice-ready reports backed by proof of work. Put it on one real project this week, and you will see the difference on the very next invoice.
