How Market Research Organisations Pay Their Participants

Market research organisations often need participants to take part in surveys, interviews, focus groups, usability testing, and diary studies, among other formats. In most cases, this involvement calls for some form of compensation for the participant's time. This paper sets out the different payment methods available in the UK, along with the benefits and issues of each.

What types of incentives are most effective for market research participants in the UK?

Our research found these are the most used incentives in UK market research: vouchers, the most common default; cash, in-person only; BACS, requiring high levels of admin; and online payments, generally the most convenient option for all sides. The right choice depends on study format and budget, and this paper sets out the operational and cost trade-offs of each option in detail below. In practice, it is often best to offer more than one option, for example an automated payment direct to a participant's bank account, with vouchers offered as a backup for anyone who prefers them.

Vouchers and gift cards

Vouchers and gift cards are the default payment method most research organisations reach for first. Once a participant completes a study, an agency issues a code or link by email, most commonly for Amazon, and the participant redeems it in their own time. It is fast to set up, with no payment infrastructure or bank details required, but that default carries costs that only surface once a programme is running at scale: unredeemed value, customer service overhead when something goes wrong, and a genuine administrative burden in issuing and tracking codes, all covered in detail below.

When should you use vouchers or gift cards to pay market research participants?

Vouchers suit small, one-off studies where speed of set up matters more than tight financial control. They are a weaker fit once a programme runs at real scale, where unredeemed value, manual issuing, and the risk of alienating participants who avoid Amazon start to outweigh the convenience.

Benefits of vouchers and gift cards for research respondents

1. No personal or banking data required

Issuing a voucher or gift card requires only an email address. This keeps compliance simple for the agency and means the participant is never asked to hand over financial details to a company they may only interact with once, making vouchers well suited to a one-off survey where minimal data collection matters most.

2. Near universal acceptance, particularly Amazon

Universal gift cards offer maximum flexibility and appeal to the broadest possible audience. Amazon vouchers in particular work across demographics and geographic regions while offering virtually unlimited choice in how the reward is spent, which is exactly why they turn up so consistently across UK survey panels and focus group recruiters as the default incentive.

3. Fast and low friction to distribute

A digital voucher or reward can be issued the moment a participant completes a study, with no printing, posting or bank processing time involved. It is a double-edged sword though, fast and low friction for small scale distribution, but that same simplicity becomes an administrative burden once an agency is issuing hundreds of them. We cover this trade-off in point 4 of the disadvantages section below.

Issues with vouchers and gift cards for research respondents 

1. Unredeemed funds

Not every voucher issued gets used, some sit forgotten in an inbox, others are never claimed at all. Industry estimates put this at 5% to 15% of total gift card sales unredeemed, and in the UK, gift card sales net retailers an estimated £5.6 billion a year, 10% of that unredeemed, roughly £560 million sitting with retailers, paid for but never claimed. This is known in the industry as breakage: the retailer has already been paid for it, so it becomes pure profit at no cost. Neither the agency nor the participant wins, only the retailer does.

The same problem shows up on a smaller scale even when a voucher is used. A £20 voucher rarely gets spent down to the exact penny, and most retailers do not accept partial balances against a lower value purchase, so the leftover amount is often just lost. Retailers have little incentive to fix this: it is described in the industry as “upspend”, a participant given £20 to compensate them for their time may end up spending nearer £30 to actually use it, with the retailer benefiting either way.

2. Customer experience

Voucher schemes also come with a real risk of things simply going wrong at the point of redemption. Reviews of reward providers used across large scale survey and research programmes describe a consistent pattern: a participant is told a voucher has been issued, only to find the code invalid, the balance showing zero despite never having been spent, or the retailer refusing to honour it at all.

What makes this worse is where responsibility sits once something goes wrong. Participants describe being passed between the reward provider and the retailer, each pointing to the other, with no clear route to a resolution. For a participant who has already given their time for a study, this turns a simple thank you into a frustrating and sometimes unresolved dispute, and it is the agency's name attached to the invitation that the participant remembers, not the reward provider's.

3. The Amazon backlash

Amazon is by far the easiest and most universally accepted voucher choice, which is exactly why the sector defaults to it. But this convenience comes with a growing complication: there is now an active ethical boycott movement against Amazon, and this plays out clearly on UK forums whenever a research incentive is offered as an Amazon voucher, one respondent turned an incentive down outright, saying they were very anti Amazon and would not want something from them even for free, while others in the same thread picked the offer apart on principle, one linking the retailer directly to the decline of the UK high street.

None of this is a fringe view confined to one thread, it reflects a wider and growing discomfort with Amazon as a company, separate entirely from how convenient its vouchers are to issue. For an agency, defaulting to Amazon risks alienating exactly the kind of ethically engaged participants that many studies want to reach.

4. Administrative burden at scale

This is the flip side of point 3 in the benefits section above. Vouchers are genuinely quick to issue one at a time, with no bank details or payment run required, but that ease does not scale on its own. At any real volume, someone still has to match participants to individual codes, issue each one manually, and track who has and has not claimed theirs, typically exporting responses, preparing a spreadsheet, then uploading it to a reward provider or sending codes one by one, every step repeated per participant, per study. One university research lab found that automating this reduced their administrative burden by 75% on average, with the manual alternative carrying its own hidden cost: someone has to act as custodian of the gift card fund, log it, reconcile it, and carry the risk of theft or loss.

Taken together, the disadvantages of vouchers outweigh the benefits once a programme scales beyond a handful of studies. They remain quick and low friction to set up, but unredeemed funds, poor customer experience when something goes wrong, growing resistance to Amazon specifically, and the manual burden of running the scheme all add up to a real cost that is easy to underestimate at the outset.

Cash

Physical cash is one of the oldest ways to reward a participant, and it is still common practice for in-person UK research sessions. A respondent attends a focus group or interview and is handed their payment on the day, in an envelope or directly by the recruiter, with nothing to redeem, claim or set up afterwards.

When should you use cash to pay market research participants?

Cash suits small, in-person sessions, particularly where a study is trying to reach older participants, people without reliable internet access, or unbanked individuals, since it removes a barrier every other payment method on this list creates to some degree. However, it does not work for online or remote studies, and it becomes challenging once a programme is handling larger sums across multiple sessions or needs a paper trail.

Benefits of using cash for market research respondents

1. Instant and unconditional

There is no redemption step, no code, and no waiting period. The participant leaves the session with money in hand that they can spend anywhere, immediately.

2. No technology or banking access required

Cash needs no email address, no smartphone, no bank account and no digital wallet. For research aiming to reach older participants, people without reliable internet access, or anyone underbanked, this removes a barrier that every other payment method on this list creates to some degree.

Issues with using cash for market research respondents

1. Security and handling risk

Holding a cash float for a session, or several sessions in one day, creates a genuine security exposure no other method on this list carries in the same way, secure storage and separating who hands out the cash from who reconciles it are basic controls against theft and error. In practice, a researcher or recruiter is personally responsible for a float sometimes running to hundreds of pounds across a day, collected from the bank beforehand, counted out into the right denominations, kept secure on site, and recounted and banked at the end, a cost most agencies do not factor into the £20 or £30 they are handing over.

2. Weak audit trail

Cash leaves no automatic record, unlike a voucher code or bank transfer, nothing is generated by the payment itself that proves it happened, so the research organisation has to build that evidence manually, typically a signed receipt per participant, or risk having no paper trail at all if HMRC or an internal audit asks how a research budget was spent. This is a widely recognised weak point of cash generally: a clear, well documented audit trail is essential for HMRC compliance.

3. Only works in person

Cash cannot be sent to a remote respondent. It only works where a participant physically attends a facility, which immediately rules it out for online surveys, remote interviews, or any study drawing on a geographically spread panel, a growing share of UK market research.

BACS and bank transfer

BACS moves money directly from the agency's bank account into the participant's own account, using their sort code and account number. It is a familiar, everyday payment rail, but unlike every method covered so far, it requires the participant to hand over real banking details before they can be paid at all.

When should you use BACS to pay market research participants?

BACS suits higher value incentives, B2B respondents, and ongoing panels where a professional bank transfer feels more appropriate than a voucher. It is a weaker fit where speed matters, since payments are batch processed rather than instant, and it commits an organisation to collecting and protecting real banking data, a meaningfully higher compliance burden than any voucher or cash payment.

Benefits of using BACS for market research respondents

1. Familiar, trusted and paid in full

A bank transfer is a familiar, everyday payment method that needs no explanation, which matters particularly for B2B respondents and professional panels. Once the transfer clears, the participant has the full amount, securely in their own account.

2. Suits larger amounts and ongoing relationships

Bank transfer works well for higher value incentives, or for respondents taking part in a study repeatedly over time.

Issues with using BACS for market research respondents

1. Capturing and storing data

BACS requires the participant's full name, sort code and account number before a payment can go out, and most organisations also collect contact details so any payment issue can be traced and resolved. This may not be classed as special category data under UK GDPR, but the combination is still a sensitive data set to collect and store, and every participant paid this way is one whose full data set the research organisation now has to protect for as long as those records are kept.

2. Slow

BACS payments are typically processed in batches rather than instantly, so there is often a gap of several days, sometimes longer, between a participant taking part and the money actually landing in their account. That delay makes BACS feel far less like an immediate thank you.

3. Admin overhead

Running BACS payments at any scale tends to mean a spreadsheet somewhere, matching participant names to sort codes, account numbers and payment amounts by hand, with every field an opportunity for error. On top of that, someone still has to reconcile those payments against the organisation's own finance records and keep a clear audit trail, work that does not happen automatically the way it would with a digital platform.

Digital payments

Digital platforms to manage survey incentives let a research organisation pay large numbers of participants securely at once, directly into their own bank account, with the process automated and every payment logged for a clear audit trail.

When should you use digital payments to pay market research participants?

Digital payments suit organisations running frequent studies at real volume, where the admin time saved and the clean audit trail matter more than the processing cost per payment. They are a weaker fit for low volume studies, as it is hard to justify setting up a payment platform for occasional use.

Benefits of digital payments for market research respondents

1. Time saved on admin, on both sides

The agency sets up or approves a payment run once rather than issuing one payment at a time. The participant gets paid into their account swiftly with minimal admin or chasing.

2. Quick payment

Digital platforms usually pay out quickly, though not all work the same way. Some pay directly into the participant's own bank account within a day or so, while others leave the money in a wallet balance that the participant then has to actively withdraw or spend themselves. The faster, direct-to-bank version is the better experience for the participant, since the reward is simply theirs, rather than one more thing they have to remember to deal with.

3. Good user experience

Cash and cash equivalents are consistently what respondents say they prefer. A US survey found recipients across every age group more likely to take part in a programme offering monetary rewards than gift cards only, and a broader systematic review of 46 randomised controlled trials reached the same underlying conclusion, using money was associated with a higher response rate than vouchers or a lottery. We have not found an equivalent UK survey on preference specifically, but paying directly into a bank account is the closest any method in this paper gets to giving a participant what they actually want.

4. Full reporting and audit trail

Every payment is logged as it happens rather than reconstructed afterwards from a spreadsheet. That means a report can be pulled for any individual transaction, showing the amount, the date it was approved, and who approved it, alongside a full exportable record for reconciling against internal accounts or answering an audit query. This automated trail is what all the other payment methods lack.

Issues with digital payments for market research respondents

1. There is a cost to process the payment

Moving money electronically is not free. Whatever platform is used, there is typically a processing fee attached to each payment, a real, ongoing cost to factor into the budget rather than a one-off setup expense, particularly across a large volume of small, frequent incentive payments.

2. The participant needs to sign up

Before a participant can be paid, they typically need to create an account or complete some form of verification with the platform. That is an extra step between finishing a study and actually receiving payment, and it is one more point where a participant could drop out of the process before ever being paid.

It is worth watching out for larger enterprise-scale payment platforms. Some are structured so that the participant, not the research organisation, ends up covering the cost of accessing their own money, through withdrawal fees, account verification delays, or charges simply to move the funds out. Always check who is actually paying the fee before choosing a platform, the agency or the person being thanked for their time.

Less common ways to incentivise market research participants

Prize draws

There is UK evidence on this. A 2024 YouGov survey of UK loyalty programme attitudes found that prize draws were found appealing by less than a third of consumers overall, with interest concentrated mainly among Londoners and 18 to 24 year olds. That fits the wider pattern found in academic research on this topic, prize draws are a niche preference, not a broadly motivating reward, and guaranteed incentives consistently outperform them on response rate, including with professional audiences.

The one genuine advantage is cost. A prize draw concentrates the budget into one prize rather than paying everyone, a real saving, it just does not appear to buy a better response rate in return.

Points and loyalty schemes

This model suits ongoing panels rather than one-off studies. Respondents earn points for each survey they complete, and redeem them once they cross a minimum threshold, rather than being paid per study.

A real UK example shows how much this threshold matters. One major UK panel pays roughly 50p per survey towards a £50 cash-out threshold, meaning it takes several months of steady participation before a member sees any reward at all. A smaller UK panel offers a £3 minimum threshold instead, redeemable via PayPal or a gift card, letting participants cash out almost immediately.

That trade-off is really the whole story with points. A low threshold rewards participants quickly but requires more frequent administration, while a high threshold builds long-term engagement, participants keep coming back to reach their payout, but risks losing anyone who does not stay active long enough to ever cash out.

Prepaid cards

A prepaid Visa or Mastercard works differently to a retailer voucher. Rather than being locked to one brand, it is open loop, meaning it spends anywhere that card network is accepted, online or in store, in the same way a normal debit card would.

They are genuinely in use, not a niche option. Every major incentive and reward platform serving the research sector, including the providers behind several of the reward schemes referenced earlier in this paper, lists prepaid Visa and Mastercard as a standard option alongside retailer gift cards, and they are specifically recommended for international studies, where a single retailer voucher may not be available or relevant in every participant's country.

There is a genuine restriction worth flagging though: certain spending categories, gambling and tobacco among them, are commonly blocked by card issuers on these cards in the UK and EU, which a voucher or straightforward bank transfer would not restrict in the same way.

Beyond that, prepaid cards largely inherit the same disadvantages covered under vouchers earlier in this paper: unredeemed value, partial redemption, and an admin burden to issue and track. A couple of points are worth adding on top. Cards typically carry a shorter shelf life than a retailer voucher, one UK provider's prepaid Mastercard expires after 12 months rather than the multi-year window a voucher usually gets. And the card generally needs to be activated or registered by the participant before first use, an extra step that is one more place a participant can drop out of the process before ever receiving their reward.

Cheques

Cheques are still a legal, valid form of payment in the UK, and at least one UK survey panel continues to send them alongside PayPal as an option. But they are genuinely rare in market research specifically, one European market research ethics body's incentive guidance puts it plainly, cheques are allowable by law but not used in practice. That reflects the wider UK picture too, cheque use has been in long-term decline for years, kept alive mainly as a legacy option for older or less digitally comfortable participants rather than a method anyone actively recommends.

References

1. London Business School, False Profits and the Folly of Gift Card Expiry Dates Analysis of UK gift card sales showing retailers net an estimated £5.6 billion a year, with 10% of that value never redeemed.
2. Ncentiva, Gift Card Breakage: What It Is, Why It Matters Industry data on gift card breakage, estimating that between 5% and 15% of total gift card sales go unredeemed.
3. What Hi-Fi Forum, Questionnaire on Front Page UK forum thread showing real participant sentiment toward Amazon voucher incentives, including outright refusal on ethical grounds.
4. Trustpilot, Reward Provider Reviews Independent customer reviews describing invalid codes and zero balances at the point of voucher redemption.
5. BHN Rewards, Gift Card Incentives Case Study A university research lab case study showing a 75% reduction in administrative burden after automating reward delivery.
6. WorkflowMAX, Audit Trail Best Practices to Avoid HMRC Penalties Guidance on why a clear, well documented audit trail is essential for HMRC compliance.
7. GDPR Local, GDPR and Payments Guidance on UK GDPR data minimisation as it applies to the collection of payment data.
8. vHelp, BACS Clinical Trial Payments and MHRA Inspection Risk vHelp's own white paper on the compliance risks of using BACS to pay clinical trial participants.
9. PLOS One, Systematic Review of Survey Incentive Trials A systematic review of 46 randomised controlled trials finding that money outperforms vouchers and lotteries on survey response rates.
10. YouGov, What Britons Want Out of Loyalty Programmes in 2024 UK survey finding prize draws appeal to less than a third of consumers, concentrated mainly among Londoners and 18 to 24 year olds.