You finish a busy week, open the timesheet, and freeze. Which hours count? Do breaks go in? What about the two hours you spent on a client call that never made it onto any plan? A timesheet looks like a two-minute chore, yet a wrong entry can delay a paycheck, undercharge a client, or quietly leak margin from a project.
This guide walks you through filling out a timesheet correctly, whether you use a paper form, a spreadsheet, or software. You will learn what goes in each field, how to split billable from non-billable time, how to calculate hours without errors, and how a finished timesheet turns into an invoice and, eventually, cash in the bank. That last part is where most guides stop and where a lot of money is won or lost.
What Is a Timesheet?
A timesheet is a record of the hours a person works over a set period, usually a day, a week, a fortnight, or a month. Teams use it to run payroll, bill clients for the right amount, track what a project truly costs, and keep a clean paper trail for audits.
Most timesheets, however they look, capture four things: who did the work, when they did it, which project or task it belongs to, and how long it took. Employees, contractors, and freelancers fill them in. Managers, HR, and finance review and approve them. In a services business, that record is the source of truth for both a person’s pay and a client’s bill, so accuracy is worth the few minutes it takes.
For firms that live on billable time, the timesheet also feeds professional services automation, where logged hours flow straight into utilization tracking and invoicing rather than sitting in a spreadsheet no one reconciles.
Types of Timesheets and Which One You Need
Before you fill anything in, check which format your company runs on. The right one depends on your payroll cycle and how closely you bill by project.
- Daily timesheets capture an hour-by-hour view of a single day. They suit hourly roles and field work where tasks shift often.
- Weekly timesheets are the most common. They group each working day with a total at the bottom and line up with a standard payroll week.
- Biweekly timesheets cover a two-week pay period, common where payroll runs every other week.
- Monthly timesheets suit salaried teams and monthly retainers. They give a broad view but need consistent daily logging to stay honest.
- Project-based timesheets group hours by client, project, or deliverable instead of by date. For consulting, engineering, staffing, and agency teams where several clients share the same people, this format keeps billing clean.
If your firm bills clients, a project-based or weekly format with project fields will save you the most rework later.
What to Gather Before You Start
A little prep prevents the back-and-forth emails with HR. Before you touch a single cell, have these ready:
- Your full name, employee ID, and department.
- Your manager or approver’s name.
- The correct pay period or date range.
- The projects, clients, or task codes you worked on.
- Your start and end times, plus any breaks, if your company tracks them.
- Whether each block of time is billable or non-billable.
How to Fill Out a Timesheet in 8 Steps
Follow these eight steps in order. They apply whether you are writing on paper, typing into a spreadsheet, or clicking through software.
Step 1: Add Your Name and Employee Details
Start with your full name, employee ID, department, and your approver’s name. This ties the timesheet to the right payroll record and sends it to the right person for sign-off. In software, these fields are usually pulled from your profile, so you can skip straight to the hours.
Step 2: Set the Correct Pay Period or Date Range
Choose the date range that matches your payroll cycle. A daily sheet shows one date, a weekly sheet lists each day, and a monthly sheet shows a start and end date. Use a clear, consistent format such as DD/MM/YYYY. Getting the range wrong is one of the most common causes of a delayed or incorrect paycheck.
Step 3: Log Your Start Times, End Times, and Breaks
Record when you started and stopped each day, along with any breaks. Some timesheets want clock-in and clock-out times, others only want a total such as eight hours. Follow whichever your company uses, and log entries as close to real time as you can. Trying to reconstruct a whole week on Friday afternoon is where guesswork creeps in.
Step 4: Assign Hours to the Right Project or Client
If your firm tracks time by project, attach every entry to the correct project, client, or task. This single step is what makes accurate client billing, project cash flow tracking, and workload analysis possible. Vague entries such as “general work” are the ones that get questioned during an audit or a billing review.
Step 5: Split Billable and Non-Billable Hours
This is the step that separates a rough time log from a document you can bill from. Billable hours are the ones a client pays for, such as design work, development, or advisory time on their project. Non-billable hours cover internal work, admin, training, and business development.
Marking each block correctly matters for two reasons. It decides what appears on the client’s invoice, and it feeds your billable utilization, the share of paid time that earns revenue. Utilization is under real pressure right now: billable utilization across professional services firms fell to 66.4% in the 2026 Professional Services Maturity Benchmark from SPI Research, the lowest reading in the study’s history, against a healthy floor closer to 70%. Every hour mislabeled on a timesheet nudges that number in the wrong direction.
Step 6: Record Overtime, Leave, and Holidays
Keep regular hours separate from overtime, and log any leave, sick days, or public holidays for the period. Overtime rules vary by country, and many treat it at a premium rate, so a clear split protects both correct pay and compliance. Indian firms are expected to keep records of hours worked and wages, and teams billing GCC clients often track hours across several currencies, so a tidy overtime and leave breakdown keeps payroll and billing honest in either setting.
Step 7: Add Notes and Activity Descriptions
Use the notes field to describe what you worked on in each block, and to flag anything unusual: a reason for overtime, a late start, or time spent on an unplanned request. These short descriptions give your approver context and become the record you reach for when a client questions a line on an invoice months later.
Step 8: Review and Submit for Approval
Before you submit, read the whole sheet once. Check that dates are right, hours add up, projects are assigned, billable and non-billable time is split, and overtime sits on its own line. On paper, that means signing and handing it over. In software, it is usually a single click that sends the sheet into an approval queue and, once approved, on toward billing and payroll.
A Worked Timesheet Example, With the Math
Say a senior consultant logs 40 billable hours on a client project in one week, at a rate of 1,500 per hour. Here is how the numbers build, the same way a document total is built on any well-run system:
- Service line: 40 hours x 1,500 = 60,000
- Discount (0%): 0
- Taxable amount: 60,000
- Tax (GST 18%): 10,800
- Document total: 70,800
The pattern is simple: hours times the person’s rate, minus any discount, plus tax on each line. If the same consultant had logged 40 hours but only 32 were marked billable, the client would be charged for 32 hours, and the other 8 would show up as non-billable time against utilization rather than revenue. That is the entire reason Step 5 is worth getting right.
One detail worth knowing: a person’s billing rate can change over time. A good system uses the rate that applied on the day the work was logged, not today’s rate, so a timesheet from three months ago still bills correctly.
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How to Calculate Timesheet Hours Correctly
Manual math is where small errors turn into payroll disputes. A few rules keep totals clean:
- Convert to a single format: To subtract times easily, switch to 24-hour time first. A shift from 9 a.m. to 5 p.m. becomes 17 minus 9, which is 8 hours.
- Subtract unpaid breaks: The daily total is end time minus start time minus any unpaid break.
- Add the days for a period total: Sum each day to get the weekly, biweekly, or monthly figure.
- Record one hour as 1, not 100: When you log hours as decimals, 30 minutes is 0.5, not 0.30. This trips up spreadsheet totals constantly.
- Keep overtime on its own line: Do not fold it into regular hours, or the rate math breaks.
Software removes most of this by calculating totals as you enter time and flagging entries that do not add up. On paper or in a spreadsheet, double-check the totals before you submit.
From Timesheet to Invoice: The Step Most Guides Skip
Almost every timesheet guide ends at “submit for approval.” For a services firm, that is halfway. The filled timesheet is the first step of a longer journey that ends in cash, and the handoffs in between are where revenue quietly leaks.
Here is the full chain. A consultant logs billable hours against a project. A manager approves the timesheet. Those approved hours become service lines on an invoice, priced at the right rate. The invoice goes to the client and becomes a receivable. The client pays, and the receivable clears. Every link depends on the one before it, and a break anywhere, an unapproved sheet, a mislabeled hour, an invoice raised for more than the order allows, means money that was earned never arrives.
When time tracking and billing live in separate tools, someone has to carry numbers across the gap by hand, and that is exactly where hours go missing between the sheet and the invoice. When they live on one platform, approved billable time drops into an invoice as service lines on its own, and the accounts receivable and cash-flow picture updates as payments come in. You can see profitability while the project is still running, not months after it closes.
This matters more in India and the GCC than most Western-built tools acknowledge. Time-based billing in India runs on GST-compliant tax invoices, and firms serving Gulf clients often bill across currencies. In both cases the timesheet is the source record everything downstream inherits, so the cleaner the sheet, the cleaner the invoice, the faster the cash. This is the logic behind treating a timesheet as part of your project-to-cash operations rather than an HR formality.
Common Timesheet Mistakes and How to Avoid Them
- Filling it in from memory. Reconstructing a week at the last minute produces round, wrong numbers. Log daily instead.
- Mislabeling billable time. Marking billable work as non-billable undercharges the client and drags utilization down. The reverse annoys clients and invites disputes.
- Forgetting breaks and leave. Skipped breaks and unlogged leave throw off both pay and totals.
- Vague descriptions. “Work” tells an approver nothing and helps no one at billing time.
- Wrong date range. A sheet filed against the wrong pay period is a classic cause of a delayed paycheck.
- Submitting late. Late sheets stall payroll and push back invoicing, which pushes back cash.
Manual, Spreadsheet, or Software: Which Method Wins
Most teams pass through all three as they grow. Here is how they compare on the things that matter.
| Criteria | Paper | Spreadsheet | Software |
| Accuracy | Low, manual only | Medium, formula-aided | High, auto-calculated |
| Time per day | 10 to 15 minutes | 5 to 10 minutes | Under a minute |
| Error checking | None | Basic formulas | Built-in validation |
| Billing and payroll link | Manual re-entry | Manual export | Direct handoff |
| Project profitability view | None | None | Live |
| Scales with the team | Poorly | To a point | Yes |
Paper needs no setup and breaks down past a handful of people. Spreadsheets add formulas and shareability, then buckle under version chaos and broken cells once several projects run at once. That failure point tends to arrive somewhere between 40 and 60 people, when the manual glue holding the tools together stops holding. Software carries the load past that line by linking hours to projects, calculating as you go, and passing approved time straight to billing.
How to Fill Out a Timesheet in Juntrax
If your firm runs on Juntrax, the eight steps above are built into the flow, and the project-to-cash handoff happens for you.
- Log time against a project: Pick the project and task, enter your hours, and mark them billable or non-billable. Rate cards apply the right rate by client automatically.
- Track multiple engagements: People working across several projects or clients can split time cleanly, so utilization and billing stay accurate per engagement.
- Send it for approval: Managers approve or reject sheets in a queue. Unapproved time does not flow into billing, which keeps the invoice trustworthy.
- Turn approved time into an invoice: Billable hours drop into an invoice as service lines, priced by rate card, ready to send as a GST-compliant document.
- Watch the money follow: As invoices are raised and payments logged, receivables and cash-flow update in real time, alongside your HR and payroll data in the same system.
Juntrax works alongside your existing accounting stack, such as Tally, QuickBooks, Xero, or SAP, rather than replacing it. It sits between the work and the ledger, turning timesheets into billed, collected revenue.
How to Get Your Team to Fill Timesheets on Time
Even the best template fails if no one completes it. A few habits lift compliance:
- Write down the rules. State when sheets are due, which fields are required, and what happens if they are late. Ambiguity is the enemy of consistency.
- Cut the friction. The less effort a timesheet takes, the more reliably it gets done. If filling one in takes ten minutes a day, the tool is the problem.
- Use reminders and workflows, not chasing. Automated nudges and an approval queue beat Slack messages and email threads.
- Connect it to what people care about. When the team sees that accurate sheets mean correct pay, fair workloads, and fewer billing disputes, the habit sticks.
The Takeaway
Filling out a timesheet well is a small discipline with an outsized payoff. Log time daily, assign it to the right project, split billable from non-billable honestly, keep overtime and leave separate, and review before you submit. Do that consistently and payroll runs clean, clients get billed for exactly what they owe, and cash arrives on time.
The bigger shift is seeing the timesheet as the first step of a journey that ends in collected revenue, not a form you file and forget. When your hours, invoices, and cash-flow live in one place, that journey has no gaps for money to fall through.
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Frequently Asked Questions
How Do You Fill Out a Timesheet Correctly?
Add your name and details, set the correct pay period, log start and end times minus breaks, assign each entry to a project, split billable from non-billable hours, record overtime and leave, add short notes, then review and submit for approval. Logging daily rather than from memory is the single biggest accuracy win.
How Do I Calculate Total Hours Worked on a Timesheet?
Subtract the start time from the end time for each day, then subtract any unpaid breaks. Add the daily totals to get the figure for the period. Convert to 24-hour time first to make the subtraction easy, and keep overtime on its own line. Software does this automatically as you enter time.
What Is the Difference Between Billable and Non-Billable Hours?
Billable hours are the time a client pays for, spent directly on their project or deliverable. Non-billable hours cover internal work such as admin, training, and business development. Splitting them correctly decides what appears on the invoice and drives your billable utilization rate.
How Often Should I Fill Out My Timesheet?
As close to real time as possible, ideally at the end of each day or as you switch tasks. Waiting until the end of the week or pay period leads to guesswork and errors. Your company will set a submission cadence, usually daily, weekly, or biweekly, based on its payroll cycle.
Can a Timesheet Be Used for Client Billing and GST Invoicing?
Yes. In a services firm, the timesheet is the source record for billable hours, and those approved hours become the service lines on a client invoice. On a unified platform, that billable time flows into a GST-compliant tax invoice priced by rate card, so the timesheet and the bill never drift apart.
What Are the Most Common Timesheet Mistakes?
Filling the sheet in from memory, mislabeling billable time, forgetting breaks and leave, writing vague descriptions, choosing the wrong date range, and submitting late. Each one costs either accurate pay, accurate billing, or timely cash, and daily logging with software validation prevents most of them.