Private Detective Fees in Delhi (2026): What Each Type of Case Really Costs

Here’s a scene we see every wedding season. A mother from Mayur Vihar calls with three quotes for the same job. One agency wanted ?4,000. Another wanted ?40,000. The third refused to name a figure until she paid a “registration charge”. She asks a fair question: how can the same investigation cost ten times more in one office than another?

The answer is that it usually isn’t the same investigation. Detective work is sold by time, people and risk, and two quotes that look alike on WhatsApp can describe completely different jobs. This guide breaks down what private detective fees in Delhi actually look like in 2026, case by case, so you can read a quote properly before you pay a rupee.

How do detective agencies in Delhi charge?

There’s no government rate card for private investigation in India. Agencies set their own prices, and most use one of four models.

1. Per-day (surveillance) pricing

Used for anything that involves watching someone’s movements: infidelity cases, post-marriage checks, employee misconduct, some missing person work. You pay for each day of field work, usually defined as a shift of 8 to 10 hours. The day rate covers the investigator, the vehicle, fuel and photo or video documentation.

2. Fixed per-case pricing

Used for verification jobs with a clear scope: a pre-matrimonial background check, address and employment confirmation, asset verification. You agree on a list of checks, a timeline and a fee.

3. Per-candidate pricing

Companies doing employee screening pay per person checked, with the rate depending on how many checks are bundled (address, past employers, education, references). Bulk volumes bring the per-head rate down.

4. Retainers

Law firms and businesses that need regular litigation support or due diligence sometimes pay a monthly retainer instead of case-by-case fees.

Private detective fees in Delhi by case type (2026)

The table below shows indicative ranges for Delhi NCR in 2026. They’re a starting point for a conversation, not a price list. GST is extra.

For context, an AFP report on India’s wedding detectives put the cost of hiring one at between US$100 and US$2,000, depending on how much surveillance is needed. That’s roughly the same spread you see in Delhi today, and the reason is the same: surveillance days are what make a bill climb.

What each type of case really involves (and why it costs what it does)

Pre-matrimonial checks

This is the work we’re asked about most, and the price swings the widest. A basic check confirms that the job, the address and the family details are real. A detailed one adds discreet enquiries in the neighbourhood and at the workplace, a look at lifestyle and habits, and a few days of observation. If you’re weighing packages, our full breakdown of pre-matrimonial investigation cost in Delhi walks through each level in detail. For a boy’s side check specifically, see what we verify in a groom background verification.

Infidelity and extramarital affair cases

Here you’re paying for patience. A suspected affair rarely shows itself on the first day you book. Most of our infidelity case investigations are planned around the days that matter: the “late meeting” every Thursday, the weekend “office offsite”. Booking three targeted days usually costs less, and achieves more, than ten random ones.

Employee background verification

For employers, the per-candidate fee depends on the checks you bundle: current and permanent address, previous employers, education, references, and a court-record search where lawful. Our background check services are priced per head, with volume rates for companies screening dozens of hires a month.

Missing person, asset and corporate work

These are the hardest to price upfront because nobody knows on day one how far the trail goes. A good agency will quote the first phase (say, ten days of enquiries), report back, and only then propose the next phase. If someone gives you a single all-inclusive figure for tracing a person who vanished six months ago, ask them how they arrived at it.

What pushes a detective’s fee up or down?

Once you know these factors, most quotes start making sense.

1. Investigator-days. The single largest cost. One person for one day is the unit everything else multiplies.
2. Team size and vehicles. Following someone through Delhi traffic on one bike is a good way to lose them at the first red light. A car plus a bike, or two people, costs more and works better.
3. Geography. A case that moves between Dwarka, Gurugram and Noida in one day means long drives and sometimes a second team. Our team in Noida often picks up the east side of a case so the client isn’t paying for the commute.
4. Hours. Late nights, early mornings and weekends cost more than a standard day shift.
5. Urgency. A report needed before Sunday’s roka means pulling people off other cases.
6. Outstation and NRI work. Checks in another state or abroad add travel or partner-agency costs. Our guide to NRI groom verification explains how overseas checks are usually structured.
7. Report format. A short verbal update costs less than a detailed written report with time-stamped photographs prepared for your lawyer.

Is GST charged on detective fees?

Yes. Investigation services fall under SAC code 998521, and the GST rate on investigation services is 18%. A registered agency should give you a proper tax invoice with its GSTIN. If an agency only wants cash, won’t issue an invoice and has no GST number, that tells you something about how it handles everything else, including your secrets.

How much advance do Delhi agencies ask for?

Most agencies take a part payment upfront, often half or more, because surveillance costs (people, vehicles, fuel) start the moment the case opens. That’s normal. What isn’t normal:

• A “registration” or “file opening” charge before anyone has heard your case.
• Full payment demanded with no written scope of work.
• Pressure to decide on the spot because “the offer ends today”.

Ask for the scope in writing: what will be checked, how many field days, what the report will contain, and what happens if more time is needed. A two-line WhatsApp message counts. A verbal promise doesn’t.

Cheap quotes and illegal “add-ons”: what to watch for

A ?3,000 day rate is possible. It usually means one person on a scooter, a few blurry photos and a report written from memory. Sometimes that’s enough. Often it isn’t, and you end up paying a second agency to redo the job.

The more serious red flag is the agency that offers extras nobody can lawfully provide: someone’s call detail records, bank statements, Aadhaar data, WhatsApp chats, or “software” for a spouse’s phone. Accessing that data without legal authority can expose both the agency and you to criminal liability under the IT Act 2000 and the Bharatiya Nyaya Sanhita 2023, and anything obtained that way can damage your case in court. If you want the full picture of what a licensed investigator may and may not do, read our 2026 guide to hiring a private detective legally in India.

How to get an accurate quote in one conversation

You’ll get a far tighter estimate if you come to the first call with the following ready:

1. What you want to know, in one sentence (“Is he really working at the company he named?”).
2. Basic details: name, photograph, workplace, home locality and vehicle, if known.
3. Any pattern you’ve noticed: specific days, times or places.
4. Your deadline, if there is one (a roka date, a court hearing, a joining date).
5. Whether you need a written report for a lawyer or just answers for the family.

With that, an experienced investigator can usually tell you within one conversation whether the job is a ?10,000 verification or a ?60,000 surveillance case, and why.

Legal & ethical note

Alliance Detective Agency works only within Indian law, including the right to privacy recognised under Article 21 of the Constitution, the Information Technology Act 2000, the Digital Personal Data Protection Act 2023, the Bharatiya Nyaya Sanhita 2023 and the Bharatiya Sakshya Adhiniyam 2023. We don’t tap phones, install spyware on anyone’s device, hack accounts, or obtain call, bank, Aadhaar or telecom records illegally. Our work relies on lawful observation in public places, open-source research, field enquiries and document verification.

Frequently asked questions

How much does a private detective charge per day in Delhi?

Field surveillance in Delhi NCR typically costs about ?6,000 to ?12,000 per day for one investigator with a vehicle, and ?12,000 to ?20,000 for a two-person team. A day usually means an 8 to 10 hour shift. Night work, weekends and cases that cross into Gurugram, Noida or Faridabad can cost more. GST at 18% is added to the fee.

What does a pre-matrimonial investigation cost in Delhi?

A basic pre-marriage verification of job, address and family details usually costs ?5,000 to ?15,000. A detailed investigation with neighbourhood enquiries, lifestyle checks and a few days of observation can run from ?25,000 to ?1,00,000 or more. The final figure depends on how many checks you need, how many cities are involved and how quickly you need the report.

Is GST charged on detective agency fees?

Yes. Investigation services are classified under SAC code 998521 and attract GST at 18%. A registered agency should issue a tax invoice that shows its GSTIN and the tax charged. If an agency refuses to give an invoice or insists on cash only, treat that as a warning sign about how professionally it runs the rest of your case.

Why do detective agency quotes in Delhi vary so much?

Quotes vary because they rarely describe the same job. One agency may price a single investigator on a two-wheeler for a few hours, while another prices two people, a car, full-day coverage and a written report with time-stamped photographs. Always compare the number of investigator-days, the team size, the hours covered and what the final report will contain. The total on its own tells you very little.

Do I have to pay the full fee in advance?

Not usually. Most Delhi agencies ask for a part advance, often half or more, because surveillance costs begin as soon as the case opens. The balance is normally due when the report is delivered. Be cautious of any agency that demands full payment without a written scope of work, or charges a “registration fee” before it has even heard your case.

Is a cheap detective agency worth it?

Sometimes, for a simple check such as confirming an address or a shop’s existence. For surveillance or matrimonial work, a very low quote often means one person, short hours and a thin report, which can miss exactly what you hired them to find. Paying twice, once to a cheap agency and again to a better one, is a common and avoidable mistake.

Do detectives charge extra for NRI or outstation cases?

Yes. Checks outside Delhi NCR add travel, stay and local support costs, while overseas verification usually involves a partner investigator in that country. For NRI matches, many families split the work: verification of the Indian side (family, property, reputation) in Delhi, and a targeted check of employment and marital status abroad. Ask for these costs to be shown separately in the quote.

Will I get a refund if the detective finds nothing?

Generally no, because you’re paying for investigator time and effort, not for a particular outcome. Finding nothing suspicious is also a result, and often a relieving one. What you should expect is honest reporting of what was done each day. Agree in writing beforehand on the number of days, the scope and the report format, so there’s no confusion later.

Paying for the truth without overpaying

The fairest detective fee in Delhi is the one that matches the question you’re trying to answer. A ?10,000 verification is a waste if you need proof for a divorce lawyer, and a ?1,00,000 surveillance package is overkill if all you need is confirmation that a job and a flat are real. Start with the question, then let a good investigator size the job.

If you’d like an honest estimate for your situation, speak to our team in confidence. We’ll tell you what the case needs, what it doesn’t, and what it’s likely to cost before you commit to anything.