How to price your private investigation services

“How much do private investigators charge?” is one of the most common questions clients search for, and there’s no single answer. Rates vary with region, specialty, experience, the client type and the job. What this guide can do is help you work out what you need to charge, choose a pricing structure that fits the work, and explain your price with confidence.

A quick note on data: we don’t publish rate ranges here, because we haven’t found reliable, current national figures for investigator billing rates, and a number repeated from an unsourced blog helps nobody. Your state association and local colleagues are the best sources for what the market pays where you work.

Start with your real cost per billable hour

Many independent investigators set rates by looking at what others charge, then find they’re working hard and not making money. Start from the other end.

1. Decide what you need to earn. For context, the Bureau of Labor Statistics reports a median annual wage of $51,220 for employed private detectives and investigators in 2025. That’s a wage, paid by an employer who also covers overhead, equipment, insurance and quiet months. As an independent, your rate has to cover all of that too.

2. Add up your annual business costs. Common items:

• License and renewal fees, continuing education, association memberships
• General liability and errors-and-omissions insurance
• Vehicle costs beyond what you bill as mileage
• Cameras, lenses, spares, memory cards, laptop and phone
• Software and database subscriptions
• Accounting, legal and marketing
• Health insurance and retirement savings, if you’re self-employed
• Self-employment taxes (ask an accountant what applies to you)

3. Estimate your billable hours honestly. Not all working hours are billable. Admin, marketing, travel you can’t bill, report writing clients won’t pay full rate for, and slow months all eat into the year. It’s common to bill far fewer hours than you work. Use your own time records if you have them, and be conservative if you don’t. Pursuit Magazine’s “The Business of Running a Business” makes the case for a weekly admin day; that day is real time your rate has to fund.

4. Do the arithmetic.

(Target income + annual business costs) ÷ realistic billable hours = minimum hourly rate

The SBA’s startup-cost guidance uses the same logic for break-even: fixed costs divided by what each unit of work contributes. If your minimum rate is above what your market will pay, you need to cut costs, raise billable hours, specialize in better-paid work, or change your pricing structure. Better to know now.

Choose a pricing structure

Most investigators use a mix. Each suits different work.

Hourly plus expenses

The most common structure, especially for surveillance and litigation support. You bill time at an hourly rate, plus mileage and approved expenses.

• Good for: open-ended work where effort is hard to predict.
• Watch for: clients’ fear of an unlimited bill. Offer a not-to-exceed cap or authorized-hours budget, and report hours used in every update.
• Decide in advance: do you bill travel time at full rate, a reduced rate or not at all? Is there a minimum per day in the field? Do you bill report writing? Write it down.

Flat fee

A fixed price for a defined deliverable: a standard background check, a locate, a single service attempt, an asset search of defined scope.

• Good for: repeatable work where you know how long it takes. Clients like certainty.
• Watch for: scope creep. Define exactly what’s included and what’s extra. Track your time anyway, so you know whether each flat fee is profitable.

Retainer

An upfront deposit against hourly fees, replenished as it’s used.

• Good for: new private clients, domestic matters and any client whose ability to pay you haven’t confirmed.
• Watch for: unclear terms. State what happens to an unused balance, when you’ll ask for a top-up, and whether work stops when the retainer runs out. Our retainer agreement checklist covers the terms to address; how retainers must be held and refunded can vary, so check with your state board or an attorney.

Day rates and packages

A fixed rate per surveillance day (for example, up to 8 or 10 hours), or packages such as “three days of surveillance with report.”

• Good for: insurance and corporate clients who budget in days.
• Watch for: days that run long. Say what happens after the included hours.

Mileage and expenses

Decide your policy and put it in every engagement letter:

• Mileage: a per-mile rate, and from where it’s measured (your office, or the job area?).
• Pass-through costs: database fees, record fees, tolls, parking, lodging. At cost or with an admin percentage?
• Pre-approval: which expenses need the client’s say-so first, and above what amount.

Keep receipts with the case file. Our time tracking and billing guide covers recording them.

Pricing for different client types

• Attorneys expect hourly billing, clear budgets and detailed invoices that match the report. They value responsiveness as much as rate.
• Insurers and SIU often set rates and authorized hours themselves, and compare vendors on cost per useful result. Pursuit Magazine’s “Out in the Cold” is a sober reminder that good results don’t always translate into more work from a carrier, so price insurance work to be profitable on its own terms. See working with insurance adjusters.
• Private individuals are often paying out of pocket during a stressful time. Clear, fixed or capped pricing and a retainer protect both of you.
• Other investigators hiring you as a subcontractor usually expect a lower rate than direct clients, since they carry the client relationship. See subcontracting safely.

Explaining your price

Clients rarely object to a price they understand. They object to surprises.

• Quote in writing with what’s included, what isn’t and the assumptions (“based on the subject working day shifts”).
• Explain the value in terms of their decision, not your hours: what they’ll know at the end, and what it’s worth to them.
• Offer a smaller first phase when the budget is tight: “Two days of surveillance first, then we’ll decide.”
• Don’t discount under pressure. Reduce scope instead. A discounted rate becomes the rate.

Review your rates every year

Costs rise every year. Review your rates annually, raise them for new clients first, and give existing clients notice. Track which types of work are actually profitable per hour, including unbilled time. You may find a specialty worth growing and one worth dropping.

Spotted an error? Tell us by email and we'll correct it.