Everhour supports flexible project budgeting, but custom billable-hour totals still need clear rates, rounding, and billing rules.
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A customizable billable-hours calculation answers one practical question: how much client-facing value did approved billable time produce after applying the right rates, increments, write-downs, and tax treatment. It is useful when one flat hourly rate is too simple because different people, tasks, phases, or dates carry different prices.
The output is usually a subtotal in U.S. dollars, plus any separate tax line when the service is taxable in the relevant state or locality. The United States has no federal VAT/GST or national sales-tax rate for billed professional time, so the tax input must match the jurisdiction and service category.
Start with the cleanest line-item formula: billable hours multiplied by the applicable hourly rate. If a project uses more than one rate, calculate each line separately, then add the line totals. Apply rounding before multiplication when your engagement letter, client policy, or firm standard bills time in fixed increments.
For example, a client operations project includes 22 principal hours at $240 per hour and 30 associate hours at $110 per hour. The billable subtotal is $5,280 plus $3,300, or $8,580. If the team also logged 8 non-billable internal hours, total worked time is 60 hours, and the effective billing rate across all worked time is $143 per hour.
The most important customization is rate structure. A project can use one project rate, member-specific rates, task rates, phase rates, or dated rates when pricing changes mid-project. A basic average rate hides those differences; a usable customizable calculation keeps each rate line visible so the subtotal can be reviewed before invoicing.
Rounding and write-downs also need separate treatment. Six-minute billing increments convert 7 minutes to 0.2 billable hours when rounding up, while 15-minute increments convert the same entry to 0.25 billable hours. A write-down reduces the amount billed to the client, but it does not erase the worked time used for utilization, realization, or staffing analysis.
Billable hours support several related metrics. Utilization compares billable time with total available or worked time. Realization compares billed value with the value originally recorded. Collection compares paid amounts with invoiced amounts. Effective billing rate divides billed revenue by total worked time, including non-billable work tied to delivery.
Keep those metrics separate because each answers a different management question. A high billable subtotal does not prove strong collection, and a strong collection rate does not prove the original time was priced correctly. For U.S. lawyers, ABA Model Rule 1.5 requires the scope of representation and the basis or rate of fees and expenses to be communicated in writing for new client-lawyer relationships, subject to the rule's limited low-cost exception.
A one-off calculator is enough when you have approved hours, fixed rates, no disputed entries, and a single subtotal to check before sending a draft invoice. It is also enough for quick comparisons, such as testing whether a 10% write-down still leaves the project above its target realization rate.
A managed workflow is better when people log time continuously, tasks switch between billable and non-billable, budgets reset by period, or invoices need approval before accounting. Everhour Project Budgeting supports hour-based and money-based budgets, recurring budget periods, threshold email alerts, budget protection, and several billing methods, so billable-hour math stays connected to project limits.
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 customizable billable-hours calculator needs hours, rates, billing status, rounding increment, write-down amount, and any tax input required by the client's jurisdiction. More advanced setups also separate project rates, member rates, task rates, dated rate changes, non-billable tasks, and expenses so each rule changes only the line it belongs to.
Use task rates when different work categories carry different prices under the client agreement. Strategy, implementation, support, and documentation can all use different hourly rates on the same project. One project rate is cleaner only when every approved billable hour should be priced the same way.
Apply the billing increment before multiplying hours by rate. If the policy bills in 0.1-hour increments, round each entry to the nearest allowed tenth according to the agreed rule. If the policy bills in 15-minute increments, convert entries to quarter hours. Rounding after subtotaling entries can change the invoice.
Yes, non-billable time should stay in reporting even when it is excluded from the client invoice. It explains delivery cost, capacity use, and effective billing rate. Removing non-billable work from every view makes utilization and profitability look better than the project actually performed.
U.S. billable-hour totals are normally denominated in U.S. dollars, but there is no federal VAT/GST or national sales-tax rate for billed professional time. State and local treatment controls the tax input when the service is taxable, so the calculator should keep tax separate from the billable subtotal.
Everhour Project Budgeting supports hour-based and money-based budgets, recurring budget periods, and email alerts at defined thresholds such as 75%, 90%, and 100%. Teams can track billable work against project or client-level limits before the final invoice is prepared.
Everhour supports non-billable projects, fixed-fee projects, and time-and-materials projects with project rates, member rates, or custom task rates. That lets admins price work according to the client agreement while keeping billable and non-billable time available for reporting.
Set budgets, rates, and billable rules before work starts. Everhour Project Budgeting keeps tracked time tied to project limits, recurring periods, and billing methods.
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