Do clinical trials pay? Compensation explained

Some trials pay, many don't

Some clinical trials pay participants, and many cover travel or other costs, but payment is not guaranteed.

Whether a study pays is decided by the sponsor and reviewed by an ethics board. Listings on RightFit show compensation only when the study's own description mentions it, and may miss some, so always confirm with the study team.

Types of compensation

Compensation usually comes as a stipend for your time, reimbursement for travel and parking, or both.

A stipend is a set amount paid per visit or per completed part of the study. Reimbursement repays costs you actually had, such as mileage, parking, meals or an overnight hotel. Some studies arrange rides or book travel for you instead of paying you back.

What's typical

Amounts vary widely from study to study. Short visits might pay a modest amount, while studies with overnight stays, many blood draws or long time commitments often pay more.

Healthy-volunteer studies, especially early Phase 1 studies, are the most likely to offer payment beyond expenses because participants don't expect a health benefit. Treatment studies for a condition more often cover expenses than pay a stipend.

What affects the amount

Ethics guidance says payment should reflect time, travel and inconvenience — not the risk of the study.

Ethics boards review payment so it is fair for your time but not so large that it pressures anyone into joining. Payments are often spread across visits, so people who leave early are usually paid for the visits they completed.

Taxes and paperwork

Study payments may count as taxable income. Sites often ask for your Social Security number and may send a 1099 form if payments pass a set amount in a year, and many pay through a prepaid card. A tax professional can tell you how this applies to you. If you get public benefits, such as SSI or Medicaid, ask how study payments may affect them. Ask the site how payments are made and what paperwork they need. Expense reimbursements are handled differently from stipends, so ask about both.

Costs you might still have

Ask who pays for study visits, tests and the study treatment — in many studies the sponsor pays for research-only tests and treatment, but confirm this in the consent form.

Routine care you would get anyway may still be billed to you or your insurance. Medicare and most private health plans are required to cover routine care costs in qualifying clinical trials, so check with your plan. Ask for this in writing before you agree to join.

Questions to ask

Is there payment for my time? Are travel, parking or childcare costs covered? When and how will I be paid? What happens to payment if I leave early? Will any part of my care be billed to my insurance?

Browse related trials

• Type 2 Diabetes trials
• Asthma trials
• Obesity trials

Quick answers

Do clinical trials pay participants?

Some clinical trials pay participants, and many cover travel or other costs, but payment is not guaranteed.

What kinds of compensation do trials offer?

Compensation usually comes as a stipend for your time, reimbursement for travel and parking, or both.

Which trials usually pay the most?

Healthy-volunteer studies, especially early Phase 1 studies, are the most likely to offer payment beyond expenses because participants don't expect a health benefit.

How is the payment amount decided?

Ethics guidance says payment should reflect time, travel and inconvenience — not the risk of the study.

Will I have to pay for anything in a trial?

Ask who pays for study visits, tests and the study treatment — in many studies the sponsor pays for research-only tests and treatment, but confirm this in the consent form.

Sources

• FDA — Payment and Reimbursement to Research Subjects
• IRS — Publication 525, Taxable and Nontaxable Income
• National Cancer Institute — Paying for Clinical Trials
• Medicare.gov — Clinical research studies coverage