Everhour supports billable rates and dated rate history, while 6-minute billing turns time into tenths of an hour.
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Billing in 6-minute increments converts each time entry into tenths of an hour. One 6-minute unit equals 0.1 billable hour, so 18 minutes becomes 0.3 hours, 42 minutes becomes 0.7 hours, and 66 minutes becomes 1.1 hours. The calculation answers one practical question: how many billable hours and dollars should appear on the invoice after applying the engagement's rounding rule.
The key is to apply the same method to every entry. A client agreement may require rounding up, rounding to the nearest tenth, or recording exact time and displaying tenths only on the invoice. For U.S. billing, totals are normally stated in USD. The United States has no federal VAT/GST, and any tax input depends on state and local rules when the service is taxable.
For a 6-minute increment, divide minutes by 6, apply the agreed rounding rule, then multiply the resulting units by 0.1 hour. If the policy rounds up each entry, 14 minutes becomes 3 units, or 18 minutes. At $160 per hour, four rounded entries of 18, 42, 66, and 48 minutes total 174 minutes, or 2.9 billable hours.
The invoice amount is 2.9 × $160 = $464. If the same raw entries were rounded only after summing, the result can change, especially with many short entries. That is why the agreement or billing policy must say whether rounding applies per entry, per day, per task, or at invoice total. The arithmetic is easy; the billing rule controls the result.
The common mistake is mixing raw timer totals with rounded invoice lines. If a report shows 2 hours and 47 minutes of actual work, that is 2.7833 hours before rounding. A 6-minute billing policy may display 2.8 hours, but the client-facing amount should come from the rounded billable total, not from a hidden decimal copied into a spreadsheet.
Another mistake is treating every short item as separately billable when the engagement expects grouped time. Six separate 2-minute emails rounded up one by one become 36 billed minutes. Grouped together, the same work is 12 raw minutes and may become 12 or 18 billed minutes, depending on the rule. Document the billing increment and grouping method before using the number on an invoice.
A one-off calculation is enough when you have a few approved entries, one hourly rate, and no need to preserve who changed what. It is also enough for checking a draft invoice before sending it. Use the rounded billable hours, multiply by the applicable rate, then add any jurisdiction-specific tax only when the service is taxable.
A managed workflow matters when rates vary by person, project, task, or date. Everhour separates cost and billable rates, supports per-person defaults and per-project overrides, keeps dated rate history, and prices billable work by project, member, or task. That matters when rounded billable time must flow into reports, approvals, and invoices without rebuilding the math each month.
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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A 6-minute billing increment means time is billed in tenths of an hour. Since 60 minutes divided by 10 equals 6 minutes, each unit equals 0.1 hour. A 24-minute entry equals 0.4 hours, and a 72-minute entry equals 1.2 hours after conversion.
Use the method stated in the client agreement, billing policy, or professional fee arrangement. Rounding each entry usually creates a different total than rounding the day, task, or invoice total. The correct calculation is the one that matches the disclosed billing method, not the one that produces the larger invoice.
Multiply the rounded billable hours by the applicable hourly rate. For example, 3.6 billable hours at $150 per hour equals $540. If the work uses multiple rates, calculate each rate category separately, then add the line totals. Do not average rates unless the agreement uses a blended rate.
Tax is separate from the billable-hours calculation unless the invoice format requires a tax-inclusive total. The United States has no federal VAT/GST or national sales-tax rate. Sales tax treatment is state and local, and some services are taxable in specific jurisdictions while others are not.
Worked hours are the actual time spent. Billed hours are the time charged after billable status, rounding, write-downs, write-offs, and rate rules are applied. A person may work 5 hours, mark 4.6 hours as billable after removing admin time, then invoice 4.5 hours after a client adjustment.
Everhour separates cost and billable rates, supports default per-person rates, and allows per-project overrides when client pricing changes. It also preserves dated rate history, so older billable reports keep the rate that applied when the work was performed.
Everhour Billing & Invoicing can generate invoices from uninvoiced billable time and expenses, using project or member rates while excluding non-billable work. Invoice line items can be grouped by project, task, person, date, or another available breakdown.
Track approved billable time with rates that match the engagement. Everhour keeps rate history and billable pricing connected from time entry to invoice.
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