How Much Does a Private Investigator Cost in 2026?
Reviewed by Christopher Quirk, Founder
Most licensed private investigators in the United States charge between $50 and $200 per hour in 2026, and most cases bill between $75 and $150 per hour. A focused case, such as a few days of surveillance with a written report, usually totals $1,000 to $3,500, and most firms ask for a retainer of $500 to $2,500 before work starts. Where you are, what you need found and how long it takes are what move the number.
If you are pricing an investigator, there is usually something serious behind the question: a partner you no longer trust, an employee you suspect of theft, or a person who keeps showing up where you are. The cost matters, but so does hiring someone who works within the law, so the evidence holds up and you stay protected. This guide covers both.
Private Investigator Cost at a Glance (2026)
| Cost item | Typical 2026 range | What to know |
|---|---|---|
| Hourly rate | $50 to $200 per hour | Most cases bill between $75 and $150 |
| Retainer | $500 to $2,500 | Complex cases can require more; it is applied against hours worked |
| Total for a focused case | $1,000 to $3,500 | For example, surveillance on a few chosen days with a written report |
| Full surveillance day | $600 to $1,500 per investigator | 8 to 10 hours at typical rates, before mileage |
| Records and background research | Often a flat fee | Depends on depth and which records are needed |
| Mileage and expenses | Billed separately | Ask whether travel time is billed at the hourly rate |
Ranges reflect 2026 national industry pricing. Your quote depends on your case, so request a free consultation for an exact estimate.
What Drives the Final Price of Hiring a Private Investigator
Two investigators can quote the same hourly rate and still send very different invoices. These five factors decide where your case lands.
The Type of Case
Surveillance is billed by the hour and is usually the most expensive part of any case, because an investigator may wait hours for a few minutes of useful activity. Records research takes less time and is often priced as a flat fee. Corporate fraud and employee misconduct cases cost more because they combine research, interviews and surveillance.
How Many Hours and How Many Investigators
Hours are the biggest variable you control. Following someone who drives often takes two investigators in two vehicles, so the subject is not lost at a light or noticed in the mirror, which roughly doubles the cost for those days. Clear information about when and where activity is likely to happen keeps hours down.
Location and Travel
Rates in large metro areas such as Washington, D.C., Baltimore and Philadelphia tend to sit in the upper half of national ranges. Mileage, tolls and parking are usually billed on top of the hourly rate, and many firms bill travel time at the full rate, so ask before you sign.
Experience and Licensing
A licensed investigator with field experience may charge more per hour but often needs fewer hours to get usable results, and knows how to gather evidence that will hold up if your matter goes to court. An unlicensed investigator who breaks the law can expose you to liability and make the evidence useless.
Equipment, Reports and Court Time
Video equipment, database searches, written reports and court testimony can each add cost. Ask what the hourly rate includes and what is billed separately.
Typical Private Investigator Costs by Type of Case
Infidelity investigations. Most are surveillance cases built around specific days when the person has unexplained time. One or two well-chosen days often cost $1,000 to $3,000, while open-ended surveillance over several weeks can cost much more. Sharing schedules, vehicles and likely locations is the most effective way to lower the cost.
Surveillance and counter surveillance. Surveillance is billed hourly. Counter surveillance, such as checking whether you are being followed or whether your vehicle carries a tracking device, is often quoted as a defined project. See our surveillance and counter surveillance services.
Corporate and employee investigations. Theft, misconduct and policy violations usually combine document review, interviews and surveillance, and are quoted by scope. See our corporate investigations services.
Fraud investigations. Insurance, workers’ compensation and financial fraud cases depend on how much documentation already exists. See our fraud investigation services.
Process serving. Usually a flat fee per attempt or per completed service, with added fees for rush jobs or hard-to-find recipients. See our process serving and subpoena services.
How Much Does a Private Investigator Cost Per Day?
At $75 to $150 an hour, a full 8 to 10 hour surveillance day with one investigator usually costs $600 to $1,500 before mileage and expenses. A day with two investigators costs roughly twice that. Many firms set a minimum number of hours per day, so short assignments may be billed at the minimum.
Private Investigator Licensing in Maryland, D.C., Virginia and Pennsylvania
Every state in our service area licenses private investigators, and hiring a licensed investigator protects you as much as it protects the case. Here is who issues licenses where most of our clients are:
- Maryland: the Maryland State Police Licensing Division licenses private detective agencies and investigators.
- Washington, D.C.: the Metropolitan Police Department’s Security Officers Management Branch handles private investigator licensing.
- Virginia: private investigators are regulated by the Department of Criminal Justice Services (DCJS).
- Pennsylvania: there is no statewide license; investigators are licensed by the Court of Common Pleas in their county under the Private Detective Act of 1953.
Ask any investigator for their license number and check it with the issuing agency before you pay a retainer. Personal Protection Solutions is licensed in every state we serve: Maryland, D.C., Virginia, Delaware, West Virginia, Pennsylvania, New Jersey, Ohio, Michigan and North Carolina.
How to Keep the Cost of an Investigation Under Control
- Define the question you need answered, such as where someone goes on Tuesday evenings, rather than asking for everything.
- Share what you already know: schedules, vehicles, addresses and photos.
- Agree on a cap on hours or a budget before work starts, with a check-in when it is reached.
- Ask how time is billed (minimum increments, travel time, second investigators) and how mileage is charged.
- Get a written agreement that explains the retainer and how unused funds are returned.
- Decide up front what kind of report you need, since court-ready reports and testimony cost more.
Is It Legal to Hire a Private Investigator?
Yes. Hiring a licensed private investigator is legal, and so is lawful surveillance of activity in public places. What an investigator can do stops at the law: they cannot trespass, wiretap, hack accounts, impersonate police or place tracking devices without legal authority. Read more in Can You Legally Hire a Private Investigator?
Can a Private Investigator Get Phone Records?
Not on their own. The federal Telephone Records and Privacy Protection Act of 2006 makes it a crime to obtain phone records through pretexting, and carriers release call records only to the account holder or through a subpoena or court order. An investigator can help your attorney decide what to request. See What Information Can a Private Investigator Legally Obtain?
Why Clients Choose Personal Protection Solutions for Investigations
Personal Protection Solutions is veteran-owned and was founded by Christopher Quirk, who spent 18 years in the U.S. Army with multiple combat tours and more than 10 years as an executive protection agent, including over 500 details. Our investigators work alongside our protection team, so if an investigation turns up a safety concern, we can add protection, counter surveillance or secure transportation without you starting over with a new firm. Every case is handled with discretion, quoted in writing before work begins and supported 24/7/365. Learn more about our investigative services.
Frequently Asked Questions About Private Investigator Costs
Recent 2026 surveys put the average near $130 an hour. Most licensed investigators charge between $75 and $150, and specialists in fraud or forensic work charge more.
Most infidelity cases cost $1,000 to $3,000 when surveillance can be focused on one or two specific days. Open-ended surveillance over several weeks costs much more, so sharing schedule details with your investigator is the best way to control the cost.
Most do. A retainer of $500 to $2,500 is common, and complex cases may require more. It is a deposit applied against hours worked, not an extra fee.
Usually, if the written agreement says so. Ask how unused funds are returned before you sign.
Not always. A lower hourly rate can cost more if the investigator needs extra hours, loses the subject or collects evidence in a way that cannot be used. Check the license, ask about experience with cases like yours and get a written estimate.
Get a Confidential Estimate
Every case is different, and the fastest way to know what yours will cost is to talk it through. Call (443) 835-6223 or request a free, confidential consultation, and we will explain your options, the likely hours and the cost before any work begins.