Private investigator pricing starts with fieldwork costs and billable hours. Everhour turns approved investigative time into billing records.
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This calculation shows the hourly bill rate a self-employed private investigator needs before accepting surveillance, background research, insurance, domestic, or corporate assignments. The result is a client-facing rate, not an employee wage. BLS OEWS May 2025 reports a $24.62 median hourly employee wage for private detectives and investigators under SOC 33-9021, but OEWS wage data exclude self-employed workers and owners.
A solo PI rate must carry costs that an employee wage does not show. State license fees and renewals belong in overhead because most states require private detectives and investigators to be licensed. Vehicle-heavy fieldwork also changes the math. For 2026, the IRS optional standard mileage rate for business use of a car, van, pickup, or panel truck is 72.5 cents per mile.
Use this formula: `(income target + overhead + benefits substitute + tax gross-up) / billable hours`. For a private investigator, overhead includes ordinary business expenses, licensing costs, insurance, databases, phone service, equipment, and vehicle costs. A benefits substitute covers health coverage, retirement contributions, paid time not worked, and other benefits an employer would otherwise fund.
For example, a solo PI who wants $70,000 in income, expects $18,500 in overhead, budgets $18,000 for self-funded benefits, and reserves $22,000 for taxes needs $128,500 from billable work. If 1,250 hours are realistically billable after admin, marketing, travel gaps, report writing, and nonbillable calls, the required rate is $102.80 per billable hour.
Surveillance and field interviews can make mileage the largest variable cost in a private investigation practice. A PI who drives 12,000 business miles in 2026 has a standard mileage amount of $8,700 before business-related parking fees and tolls. IRS rules generally allow either the standard mileage rate or actual car expenses, with mixed-use vehicles allocated by mileage.
The common mistake is pricing every case from clock time alone. A two-hour field assignment can still require long travel, paid parking, tolls, camera storage, report drafting, and database checks. Build recurring vehicle and license costs into the hourly rate, then quote direct case expenses separately when the client agreement treats them as reimbursable pass-through costs.
A one-off calculation works for setting a starting rate, testing a new service line, or checking whether a flat case fee covers the work. It is enough when you need one answer for a quote and the matter has limited follow-up. Keep the inputs dated because tax reserves, mileage rates, licensing costs, and benefits replacement amounts change.
A managed workflow fits repeat investigative work, retainers, and matters that move from field notes to invoices. Everhour Billing & Invoicing can turn tracked billable time and expenses into invoices, calculate invoice amounts from rates while excluding non-billable tasks, and export invoices to QuickBooks Online, Xero, or FreshBooks with status sync back to Everhour.
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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No. BLS OEWS May 2025 reports a $24.62 median hourly employee wage for private detectives and investigators, but OEWS wage data exclude self-employed workers and owners. A client rate for a solo PI adds overhead, licensing costs, vehicle expenses, benefits replacement, and tax reserves before dividing by billable hours.
Include business expenses that support the practice: licensing and renewals, liability insurance, databases, phone service, equipment, office costs, marketing, professional services, and vehicle costs. Case-specific reimbursables, such as tolls, parking, records fees, or travel costs, can be billed separately when your client agreement says they are outside the hourly fee.
IRS rules generally allow business vehicle costs to be figured by the standard mileage rate or actual car expenses. The 2026 optional business standard mileage rate is $0.725 per mile. Business-related parking fees and tolls are deductible in addition to standard mileage, and mixed-use vehicles must be allocated by business mileage.
Use hours you can actually charge to clients, not total working hours. Exclude marketing, bookkeeping, licensing administration, unpaid consultations, scheduling gaps, and nonbillable report revisions. Many PI practices also lose time to travel that cannot be billed under the client agreement, so the denominator should reflect realistic billable case hours.
Yes. A U.S. sole proprietor or independent contractor generally reports business profit or loss on Schedule C and uses Schedule SE for Social Security and Medicare taxes. For 2026 estimated tax, net self-employment profit is multiplied by 92.35%, then subject to Social Security up to the $184,500 wage base plus Medicare.
Everhour Billing & Invoicing converts tracked billable time and expenses into client invoices. It calculates invoice amounts from rates, time, and billable expenses while excluding non-billable work, then exports invoices to QuickBooks Online, Xero, or FreshBooks with status details synced back to Everhour.
Everhour lets admins mark projects as billable and mark specific tasks as non-billable inside billable projects. Reports can show billable time, non-billable time, billable amount, and cost by member or task, so internal admin and unpaid case work stay out of client totals.
Track approved investigative hours, expenses, and non-billable tasks in Everhour, then generate invoice-ready billing records that keep fieldwork, reports, and accounting handoff connected.
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