Excel can calculate billable time from imported rows, while Everhour adds budgeting controls when projects need ongoing oversight.
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A billable hours log in Excel answers one practical question: how much approved work should be billed from a set of time-entry rows. The usual worksheet starts with imported CSV or text data, then maps each row to fields such as start time, end time, billable status, task, person, and hourly rate. Excel handles the math once those fields are clean.
Excel is useful when the source data is already row-based. It can open `.csv` or `.txt` exports, but date and time columns use current default data format settings unless you import with From Text/CSV controls. That matters because Excel stores times as decimal fractions of a day, so a misread timestamp changes the calculated duration before any rate or invoice total is applied.
The core calculation is billable hours multiplied by the matching hourly rate, then summed across approved billable rows. In Excel, elapsed hours follow the structure `(end_time - start_time) * 24`. If the time spans full dates, use accumulated elapsed-time formatting such as `[h]:mm` so totals above 24 hours display correctly.
For example, an Excel log for a data-migration project includes 31 approved analyst hours at $128 per hour and 9 approved documentation hours at $86 per hour. The analyst line is $3,968.00, the documentation line is $774.00, and the pre-tax billable total is $4,742.00. Non-billable rows should return zero through an `IF` structure or be excluded from the total with `SUMIFS`.
The common Excel decision is whether the workbook is a calculation log or the source of truth. A workbook is strong for checking a defined billing period, but it becomes fragile when people paste over formulas, edit imported timestamps, or mix rounded and unrounded hours in the same total. Keep raw imported columns separate from calculated duration, rounded duration, rate, and line amount columns.
Rounding policy is another failure point. If the contract says time rounds up to 6-minute increments, `CEILING.MATH(hours, 0.1)` fits that rule. If it says round to the nearest 15 minutes, `MROUND(hours, 0.25)` fits that rule. Do not combine both methods in one invoice period unless the client agreement assigns different rounding rules to different work categories.
A one-off calculator is enough when you need to check a small invoice, verify an exported Excel total, or price a finished period with fixed rates. Use the workbook to confirm billable rows, apply the rate column, and add a jurisdiction-specific tax input only when the billed U.S. service is taxable. The United States has no federal VAT/GST or national sales-tax rate.
A managed workflow is needed when the same project has budget limits, recurring billing periods, approvals, or repeated rate changes. Everhour Project Budgeting supports hour-based and money-based budgets, recurring budget periods, email alerts, budget protection, expense inclusion controls, multiple billing methods, and client-level budgets, so the calculation stays connected to the project before the invoice is built.
This content is for general information only, may not be fully up to date, and is provided without any warranty or liability.
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Use one row per time entry and keep raw fields separate from calculated fields. Typical columns include date, person, task, start time, end time, billable status, hourly rate, calculated hours, rounded hours, and line amount. This structure lets Excel filter non-billable rows and sum only the entries that belong on the invoice.
Excel stores time as a fraction of a day, so the duration formula must convert the difference to hours by multiplying by 24. Totals can also display incorrectly if the cell is formatted as clock time instead of elapsed time. For totals over 24 hours, use an elapsed format such as `[h]:mm`.
Apply the rounding rule stated in the client agreement, policy, or contract. If time must round per entry, round each row before multiplying by the rate. If the policy rounds only the period total, sum unrounded billable time first. Entry-level rounding and total-level rounding can produce different invoice amounts.
A single Excel worksheet is limited to 1,048,576 rows and 16,384 columns. That is enough for many small-business invoice logs, but large teams with daily exports, long retention periods, or detailed activity rows should archive by period or move the source records into a system built for ongoing time data.
Calculate the pre-tax billable amount first, then apply a jurisdiction-specific tax input only when the service is taxable. The United States has no federal VAT/GST or single national sales-tax rate. State and local rules control whether professional time is taxed and which percentage applies.
Everhour Project Budgeting tracks hour-based and money-based budgets as time is logged, with recurring budget periods and email alerts at defined thresholds. Teams can compare logged time against budget before invoice review instead of waiting for an Excel total after the work is finished.
Track approved hours against time or money budgets before invoice cleanup. Everhour Project Budgeting gives teams budget alerts, recurring periods, and budget protection for tighter billable control.
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