Take the cases that patrol officers hand over and work them until they close. You patrol first, for years.
Click through it
Pay, the path, pros and cons and the facts on one printable page. Good for a wall or a guidance counsellor.
Or read the whole thing here
What you earn and what it costs to get there.
Median
$93,790
Bottom tenth
$55,390
Top tenth
$160,540
The national median is $93,790 a year, and the bottom tenth start near $55,390. Read the top of that range carefully: the federal survey counts city detectives and federal criminal investigators as one occupation, and the federal agents are what pull the top tenth up to $160,540. A detective in a small town is nowhere near it.
3 to 5 years on patrol first
The normal route in almost every American police department
You are hired as a patrol officer, paid as one, and you apply or test for detective later. Very few agencies hire investigators off the street, and the ones that do are federal.
Base pay plus availability pay
Criminal investigators at federal agencies
Federal criminal investigators are expected to be available for unscheduled duty, and the law pays them an extra 25% of base salary for it. Grade 13 of the General Schedule starts at $90,925 in 2026 before that top-up and before locality pay, which is why federal agents dominate the top of the range.
Tuition, fees, exams and kit. Not rent, food or travel
Detective is a promotion, not a separate qualification, so the low end is zero: a department hires you as an officer, pays you through the academy, and pays for the investigator training on department time after you are promoted. The high end is a self sponsored academy paid for up front plus a four year degree at an in state public university, which is optional at most city departments but effectively required for federal agencies. Application and testing fees are small and many agencies charge nothing at all. If you do go to college first, file the Free Application for Federal Student Aid and remember that police work at a government agency counts toward Public Service Loan Forgiveness.
This is one of the few well-paid careers you can enter with no debt at all. If you do go to college first, file the FAFSA (Free Application for Federal Student Aid) and remember that police work at a government agency qualifies for Public Service Loan Forgiveness.
Pension
Police pensions are among the last defined-benefit plans left, and many allow retirement earlier than other public jobs.
Overtime and court time
Detectives are paid to testify, and trials run on the court's calendar, not yours.
Public Service Loan Forgiveness
City, county, state and federal agencies all qualify.
Paid specialist training
Interview technique, digital forensics, financial crime. The department pays and you keep the skill.
The exact path from high school to qualified.
Hired first, trained second, promoted years later. Almost nobody starts here.
High school diploma or equivalent
Grade 12
That is the legal minimum in most states. Keep your record clean: the background investigation looks at everything, including school discipline.
College, optional but useful
0 to 4 years
Not required by most city departments. Effectively required by federal agencies, which usually want a bachelor's degree or equivalent experience. Criminal justice, accounting, computer science and languages all pay off later.
Get hired and pass the academy
1 to 2 years including hiring
Written test, physical test, background investigation, medical and psychological screening, then a state-certified academy. Expect roughly six months of academy plus months of field training.
Patrol
3 to 5 years
Three to five years answering calls. This is where you learn to talk to people, write reports that stand up, and handle a scene. Detectives who skipped it are obvious.
Promote or transfer to investigations
Ongoing
By examination, interview or assignment, depending on the department. Then specialist training in your unit: property, robbery, homicide, financial crime, digital forensics.
English
Your reports become court evidence. Bad writing loses real cases.
Psychology
Interviewing is the core skill of the job.
Computer science
Most modern cases contain a phone, an account or a camera.
Spanish or another second language
Many agencies pay a bonus for it, and it makes you far more useful.
There is no national police license. Each state runs a commission that sets the minimum standards every officer must meet, and California's is the Commission on Peace Officer Standards and Training. It sets selection standards, certifies academies and can decertify an officer for misconduct. Your certification is state-specific, so moving usually means extra training or a new academy. Federal criminal investigators are outside this system entirely and train at their own academies.
Things you don't need, but that help.
Homicide
The most senior assignment in most departments, and the hardest to leave behind at the end of a shift.
Financial crime and fraud
Accounting skills matter more than anything else. Fewer bad nights.
Digital forensics
Phones, drives and accounts. Certifications here transfer to private sector jobs that pay more.
Special victims
Sexual assault and child abuse. Vital work with the heaviest emotional cost in policing.
Federal task forces
City detectives are often assigned to joint federal task forces, which is a common route into a federal agency.
A spotless personal record
Drug history, debt, driving record and social media are all examined. Start protecting this now.
An accounting or computer degree
The two backgrounds that most reliably turn into a specialist unit.
Military or emergency medical service experience
Weighted by many agencies, and veterans get preference in federal hiring.
Real physical fitness
The entry test screens for it, and the job quietly demands it for 25 years.
Agencies that employ criminal investigators post their openings on USAJOBS (the official federal hiring site). They usually want a bachelor's degree or equivalent experience, they run far longer background checks, and they expect you to move anywhere in the country on assignment. In exchange you get the published federal pay ladder plus a 25% availability top-up, a federal pension, and the kind of cases a city department never sees.
Day to day, pros and cons, where you'd work.
Not much like television. Morning is your caseload: 15 to 40 open files, most of them property crime. You read overnight reports, pull video, request phone records, chase a lab result, and call victims back who have not heard from anyone. Afternoons are interviews, which is where the job is actually done. Then writing, because everything you found has to survive a defense attorney. Court appearances come whenever the court says so, including your day off.
The good
The hard parts
Things people don't tell you.
The federal wage survey counts city detectives and federal criminal investigators together under one occupation. That is why the median sits at $93,790 while the top tenth reaches $160,540. When you read a national number for this job, check which half of it applies to you.
Federal criminal investigators receive availability pay, an extra 25% on top of base salary, because the job expects unscheduled duty hours. On grade 13 of the General Schedule, which starts at $90,925 in 2026, that is more than $22,000 a year before locality pay is added.
California's Commission on Peace Officer Standards and Training sets the minimum standards for every officer in the state, certifies the academies, and can decertify an officer for serious misconduct. Most states now have an equivalent body, and decertification in one state follows you when you apply in another.
The national median for this work is $93,790, but the Los Angeles Police Department advertises entry-level officer pay of $93,730 to $127,660 before anyone makes detective. Big-city budgets and cost of living move this number more than experience does.
Last checked September 2026. Pay figures are typical full-time annual amounts in United States dollars, based on Bureau of Labor Statistics wage data and published pay scales. They vary by state, employer and experience. Tuition is for in-state students at public schools unless the card says otherwise.