Google Sheets handles billable-hour math, while Everhour supports the longer workflow around budgets, approvals, and reporting.
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A Google Sheets billable-hours log answers a practical question: how much approved work should be billed after separating billable time from internal, write-off, or non-billable time. The sheet usually lists dates, people, tasks, start and end times, decimal hours, rates, and line totals. The result is a pre-tax invoice amount in U.S. dollars, unless a state or local tax rule applies to that service.
The Google Sheets-specific issue is time conversion. Sheets stores dates and times as decimal day values, so subtracting a start datetime from an end datetime gives a day fraction, not billable decimal hours. Multiplying the duration by 24 turns it into hours. For display, bracketed elapsed-hour formats such as `[h+]` or `[hh]` keep totals over 24 hours from appearing as clock times.
A reliable log separates raw time from billing decisions. Keep one column for calculated hours, one for rounded billable hours, one for billable status, one for rate, and one for line amount. If the billing rule uses tenth-hour increments, `MROUND(hours, 0.1)` fits nearest-increment rounding. If the agreement always rounds positive time upward, `CEILING(hours, 0.25)` fits quarter-hour billing.
Do not rely on `TIMEVALUE` alone for multi-day or overnight work. Google Sheets `TIMEVALUE` converts a time string into a fraction of one 24-hour day and ignores the date. That is fine for parsing a time of day, but it loses the date context needed for shifts, long sessions, or entries that cross midnight. Date-and-time subtraction is the safer source for elapsed billable hours.
The basic formula is billable amount = approved billable hours × billing rate, calculated by row and summed across the log. If one role has a different rate from another, calculate each line separately before adding totals. Combining hours first and applying one blended rate changes the invoice unless the contract explicitly uses that blended rate.
For example, a Google Sheets log includes 19 approved UX review hours at $130 per hour and 23 approved implementation hours at $105 per hour. The UX line is $2,470, the implementation line is $2,415, and the pre-tax invoice total is $4,885. If the service is taxable in the applicable state or locality, add the jurisdiction-specific tax input after the labor subtotal.
A one-off Google Sheets log is enough when the job is small, the rate table is simple, and one person owns the invoice check. It gives a fast audit of the math before billing. The risk rises when several people edit time, rates change by date, approvals happen outside the file, or the invoice needs a clear trail from logged work to billed amount.
For ongoing work, a managed workflow gives the calculation a system of record. Everhour Project Budgeting supports time and money budgets, recurring budget periods, email alerts, budget protection, expense inclusion controls, multiple billing methods, and client-level budgets. That matters when the question is no longer just "what is this invoice total?" but "is this client, project, or retainer still inside budget?"
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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Google Sheets stores time as a fraction of a day. A total of 27 billable hours can display like a clock value unless the cell uses an elapsed-hour format such as `[h+]` or `[hh]`. For billing math, convert elapsed time to decimal hours by multiplying the date-time difference by 24, then apply the agreed rounding rule.
Use `MROUND(hours, increment)` when the agreement says time rounds to the nearest increment, such as 0.1 hours or 0.25 hours. Use `CEILING(hours, increment)` when positive time must always round up to the next increment. The rounding rule should match the client agreement, invoice policy, or professional engagement terms.
Tax belongs after the pre-tax labor subtotal, and only when the service is taxable in the applicable state or local jurisdiction. The United States has no federal VAT/GST and no single national sales-tax rate for billed professional time. Some services are not taxed, while others are taxed under state or local rules.
The main mistake is mixing billing decisions into raw time data. If a row has calculated duration, rounded duration, billable status, rate, and line amount all blended manually, edits become hard to audit. Keep the columns separate so a changed rate, excluded task, or revised rounding rule updates the total in a visible way.
Yes. Google Sheets can hold calculated billing data, and Google's Apps Script invoice sample shows a workflow that populates an invoice template, exports a PDF to Google Drive, and can email that PDF from the spreadsheet. Sheets handles the calculation and document generation; approval, rate history, and accounting handoff still need a defined process.
Everhour Project Budgeting tracks time and money budgets as work is logged, with recurring budget periods, threshold email alerts, budget protection, expense inclusion controls, and client-level budgets. That gives teams a running view of budget status before approved billable hours become an invoice total.
Everhour Reporting can show billable time, non-billable time, billable amount, cost, uninvoiced amount, and invoiced amount in configurable reports. Reports can be exported as CSV, Excel/XLSX, or PDF when a spreadsheet review or billing archive is needed.
Track approved time against project or client budgets before invoice day. Everhour Project Budgeting connects recurring limits, alerts, and budget protection to billable-hour workflows.
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