Strategies to increase survey response rates
16 min read
Increasing survey response rates is not always easy, and you've probably seen this in practice. You prepare everything, send out the questionnaire, and the response is much lower than expected.
The truth is that increasing the number of responses doesn't just depend on the survey's content. It has to do with how, when, and to whom you send it. Small adjustments in these areas can make a big difference in the outcome.
In this article, you will see what really influences someone's decision to respond and what can be done, simply, to increase your responses without complicating the process.
How to calculate the response rate?
Calculating the response rate is simple: you compare the number of people who responded to the market research, for example, with the total number of people invited to participate.
The formula is:
In practice, it works like this: if you sent a survey to 1.000 people and received 200 complete responses, your response rate was 20%.
But there's an important point: not every invitation sent should automatically be included in this count.
Bounced emails, duplicate contacts, invalid phone numbers, or people who were not part of the target audience can distort the result. Therefore, it is ideal to calculate the rate considering only valid invitations.
In this case, the calculation is as follows:
For example: you sent 1.000 invitations, but 100 emails bounced and 50 contacts were duplicated. So, your valid base was 850 people. If 200 responded, the adjusted response rate was 23,5%.
It is also worth separating complete responses from partial responses. If a person opened the survey, answered two questions, and abandoned it halfway, this can be analyzed as an abandonment rate, not necessarily as a valid response.
For more reliable analyses, it is best to use only complete responses in the main calculation and monitor partial responses as a complementary metric.
What is a good survey response rate?
A good survey response rate depends on the context, especially the channel used, the type of audience, and the length of the survey. In general, online surveys usually range between 10% and 30%, with values above 30% already considered very good in most cases.
More direct channels, such as WhatsApp, SMS, or phone, tend to have higher rates, while email, although more scalable, usually shows lower results.
Additionally, short surveys sent immediately after a relevant experience tend to perform better.
The most important thing here is to compare your rate within your own context and ensure it is sufficient to generate consistent and representative data.
Why is the response rate important?
It is one of the main indicators of survey quality. More than measuring how many people responded, it indicates how reliable the results can be considered for decision-making.
When the response rate is low, the risk increases that the data may not accurately represent the audience you want to understand.
In this scenario, conclusions may reflect only a specific portion of respondents, often the most engaged, very satisfied, or very dissatisfied, leaving out a more balanced view.
Another critical point is non-response bias. This occurs when there is a significant difference between those who responded and those who did not.
Even with a reasonable volume of responses, this bias can distort results and lead to misleading interpretations.
The response rate also directly impacts the statistical robustness of the survey. The higher the number of valid responses, the greater the reliability of the analyses, the lower the margin of error, and the more confidence in identifying real patterns in the data.
This is especially important in tests, comparisons between groups, and monitoring indicators over time.
Furthermore, a good response rate allows for deeper segmentations. With more data, it is possible to analyze results by profile, behavior, or journey stage, generating more actionable insights. With few responses, this type of analysis becomes limited or even unfeasible.
What are the main reasons people don't respond to surveys?
If people are not responding to your survey, it's rarely by chance. Most of the time, there is a set of barriers, whether of perception, effort, or context, that causes the invitation to be ignored. Understanding these reasons is the first step to consistently increasing your response rate.
Below are the most common factors that lead someone not to respond to a survey:
Lack of time or perception of high effort
If the survey seems long and laborious, the tendency is to postpone it and, in practice, never respond. Even when the actual time is short, the perception of effort can be a blocker. Extensive questionnaires, with many open-ended questions or no clear indication of duration, increase this friction.
Unclear or unattractive invitation
The first contact defines everything. If the invitation doesn't make clear the purpose of the survey, how long it will take, or the benefit of participating, the chance of engagement drops. Generic subjects or impersonal messages give the feeling of just another irrelevant communication.
Lack of relevance for the respondent
When the person feels that the survey is not related to them, they simply ignore it. This often happens with mass mailings without proper segmentation. The less aligned the topic is with the audience's reality, the lower the response rate will be.
Absence of incentive or perceived value
Answering a survey requires time and attention. If there is no clear return, whether an incentive or the perception that their opinion truly matters, many people see no reason to participate. The value can be financial, but it can also be symbolic, such as contributing to real improvements.
Inadequate channel
The chosen channel directly influences the response. An email may go unnoticed, while a WhatsApp message may have more visibility. If the channel is not part of the audience's habits, the chance of engagement decreases.
Wrong sending time
Timing matters. Sending a survey at inconvenient times, such as outside business hours in B2B or during peak demand, reduces the likelihood of a response. Additionally, the time between the lived experience and the survey's sending also impacts interest.
Lack of trust or privacy concerns
If the respondent does not trust who is sending the survey or does not understand how their data will be used, they may choose not to participate. This is even more relevant when the survey involves sensitive topics or collects personal information.
Previous bad experiences
Those who have had a negative experience with surveys, long, repetitive questionnaires, or no feedback, tend to ignore new invitations. This history affects the willingness to participate, even if the new survey is better structured.
Poorly optimized survey (especially on mobile)
If the survey doesn't work well on mobile, takes a long time to load, or has poor navigation, abandonment happens quickly. Today, a large part of responses come from mobile devices, and any technical friction directly impacts the response rate.
Lack of follow-up
Many people see the invitation but don't respond immediately. Without a reminder, the survey ends up being forgotten. The absence of follow-up significantly reduces the volume of responses, especially on channels like email.
Which channels to promote surveys to increase response rates?
Below are the main channels and how each one influences the result:
It is the most traditional and easy-to-scale channel, especially when you already have an organized database.
It works best when there is a prior relationship with the audience and when the invitation is clear and direct. Subject line, personalization, and timing make a difference. On the other hand, inbox competition is high, which can limit the response rate.
It has a high open rate and usually generates more responses than email.
Being a more direct and personal channel, it works well for short surveys and objective invitations. It is especially efficient in B2C contexts. The caution here is not to be intrusive and to respect the contact frequency.
SMS
It is a simple alternative with good visibility, especially when internet access is limited or when speed is desired.
Short messages, with a direct link to the survey, tend to perform better. It is a useful channel to reach broader or less digitized audiences.
Telephone (voice interviews)
Generates higher response rates, as it involves direct interaction.
It is suitable for more complex surveys or when it is important to ensure depth in responses. On the other hand, it has a higher cost and lower scale.
Respondent panels
Allow quick access to people already willing to participate in surveys.
They are useful when you need volume, specific segmentation, or speed in data collection. The response rate is usually high, but it is important to ensure quality and adherence to the desired profile.
In-app / within the product
Invitations displayed within a website, application, or platform.
They work very well because they capture the user at the moment of the experience. They are ideal for measuring satisfaction (such as NPS or CSAT) immediately after an interaction.
Social media
Can be used to broaden reach, especially when the goal is to collect general perceptions.
However, they tend to have less control over the profile of respondents. They work better as a complementary channel, not as the main source of structured data.
QR Code (offline to online)
Useful in physical locations, such as stores, events, or packaging.
Allows the respondent to be quickly directed to the digital environment. The result depends heavily on the context and motivation at the time of the approach.
What is the response rate percentage by channel?
Numbers vary by context, but these ranges are the most commonly used as reliable references. Take a look:
Surveys via WhatsApp show response rates between 30% and 50%, especially in transactional and contextual surveys. This performance is linked to the conversational format and the fact that it is a channel already integrated into users' daily behavior, according to studies cited in AskYazi's guide, which compiles data from multiple market sources such as CustomerGauge and SurveySparrow.
Telephone (CATI / voice)
Telephone surveys tend to have higher response rates compared to digital channels, potentially exceeding 50% depending on the context.
Direct human contact reduces the chance of ignoring the survey and increases engagement. In the same AskYazi guide, benchmarks indicate that synchronous and in-person methods can reach even higher levels, up to 85% in face-to-face interactions.
SMS
SMS shows high response rates, generally between 40% and 50% in short and immediate surveys. This result is explained by the high open rate and the simplicity of interaction, especially on mobile devices.
Email shows lower response rates compared to other channels, ranging between 6% and 25%. Data cited by AskYazi show that average campaigns are close to 10% to 20%, with variations depending on database quality, personalization, and survey format (embed vs. link).
In-app / Web (within the product)
Surveys conducted within applications or digital platforms show rates between 20% and 35%, potentially reaching around 36% in mobile environments. This happens because the invitation appears at the moment of the experience, increasing relevance and reducing user effort.
Website (pop-up)
Surveys in pop-up format on websites tend to have lower rates, between 8% and 15%, as they interrupt navigation and do not always appear at the ideal moment. Still, they are useful for capturing quick feedback from anonymous users.
How to increase survey response rates?
When the survey arrives at the right time, on the right channel, and with a clear proposal, the decision to respond happens almost effortlessly.
Start with the basics: clarity and context
Before any optimization, the respondent needs to quickly understand what the survey is about, why it matters, and how long it will take.
Vague or generic invitations tend to be ignored. A good invitation is direct, transparent, and contextualized, explaining the survey's objective and the benefit of participation. When the person understands the purpose, the chance of engagement increases.
Reduce effort to the maximum
The simpler it is to respond, the higher the response rate. Long surveys, with many open-ended questions or complex language, increase abandonment.
The ideal is to keep questionnaires short, objective, and easy to navigate, especially on mobile. Even when the survey needs to be more comprehensive, prioritizing the essential and eliminating excesses significantly improves the result.
Choose the right channel for your audience
The sending channel directly influences survey performance. There isn't one ideal option, but rather the one that makes the most sense for your audience.
More direct channels, such as WhatsApp or SMS, tend to generate faster responses, while email allows for greater scale but requires more care in the approach. In many cases, combining channels is an efficient strategy to increase reach and capture more responses.
Get the timing right
The moment the survey is sent has a direct impact on the response rate. Invitations sent immediately after an experience, such as a purchase or service, tend to perform better, as they are still fresh in the respondent's memory. Furthermore, respecting the audience's routine and avoiding inconvenient times increases the likelihood of participation.
Personalize communication
Generic messages have less impact. When communication is personalized, the survey becomes more relevant to the recipient. Using the person's name, mentioning the context of the interaction, or adapting the tone to the audience's profile are simple adjustments that increase engagement and make the invitation more natural.
Show value to the respondent
Answering a survey takes time, and without clear value, the tendency is to ignore it. This value can be in the perception of impact, such as contributing to improvements, or in incentives, such as rewards or benefits. The most important thing is to make it clear that participation is not just another task, but something that generates a return.
Use reminders strategically
Many people don't respond to the first contact but may respond after a reminder. Sending one or two follow-ups significantly increases the response rate, as long as it is not done repetitively or invasively. Adjusting the message and timing of reminders helps recover a significant portion of responses that would otherwise be lost.
Optimize for mobile
Today, a large part of responses happen on mobile. If the survey is not well adapted for mobile devices, with fast loading and simple navigation, abandonment increases. Ensuring a good mobile experience is essential to keep the respondent engaged until the end.
Build trust
Trust directly influences the decision to respond. When the respondent understands who is behind the survey, how the data will be used, and if participation is anonymous, they feel more secure to contribute. Transparency and clarity help reduce barriers and increase the response rate.
Test and continuously evolve
There is no single formula for increasing the response rate. What works for one audience may not work for another. Therefore, testing different approaches, such as channels, times, and invitation formats, is fundamental. Continuous improvement, based on data, allows identifying what truly generates results over time.
Does the incentive (reward) increase the response rate?
Yes, incentives tend to increase the response rate, but the impact depends on how they are used. In general, rewards reduce the barrier to participation because they make it clear that there is a return for the time invested. This effect is more evident in longer surveys, with cold audiences, or when there is no strong prior relationship with the base.
When does the incentive work best?
The incentive usually has a greater impact when the perceived effort is high. Long surveys, less engaging topics, or invitations sent to less engaged bases benefit more from rewards. It also works well in B2B contexts or with hard-to-recruit audiences, where availability to respond is more limited.
Most common types of incentives
Incentives can be financial, such as money, vouchers, and discounts, or non-financial, such as access to results, exclusive content, or contribution to improvements.
Guaranteed incentives (everyone who responds receives) tend to generate more responses than sweepstakes, but also have a higher cost. The choice depends on the survey's objective and budget.
How many questions should a survey have to increase the response rate?
There is no single ideal number, but there is a clear principle: the greater the perceived effort, the lower the response rate tends to be. Therefore, the focus should not only be on the number of questions, but on the time it takes to complete the survey.
Time matters more than the number of questions
In practice, the respondent evaluates how much time they will spend, not how many questions there are. Surveys of up to 3 to 5 minutes usually perform better in terms of response rate. This typically corresponds to something between 5 and 15 questions, depending on the type (closed or open-ended).
Less is more
The leaner the survey, the higher the probability that someone will start — and finish. Long questionnaires increase abandonment midway and reduce the rate of complete responses. Prioritizing only what is essential helps maintain focus and improves data quality.
Question type makes a difference
Not all questions have the same “weight.” Open-ended questions require more effort and tend to reduce the completion rate. Closed-ended questions (multiple choice, scale, NPS) are faster and facilitate participation. A survey with few open-ended questions tends to perform better.
Adjust according to the objective
Quick satisfaction surveys (like NPS or CSAT) can have only 1 to 3 questions and still generate a high volume of responses. More exploratory or strategic surveys can be longer, but require more care with incentives, channels, and engagement to maintain the response rate.
Indicate the duration
Regardless of the size, making it clear how long the survey takes increases trust and reduces abandonment. Indicating “takes less than 3 minutes” or using a progress bar helps the respondent decide to participate.
Is it better to invest in a respondent panel or an in-house database?
The choice between respondent panel and in-house database depends on your objective, deadline, and need for control over the sample. There is no single answer; each approach solves a different type of problem.
In-house database: control and relationship
Working with an in-house database means surveying people who already have some kind of relationship with your brand, such as customers, leads, or users. This increases the context of the responses and facilitates analysis over time.
On the other hand, the response rate tends to be more limited, especially when the database is small, not very engaged, or has been contacted many times. Furthermore, recruitment can be slower and more restrictive when you need specific profiles.
Respondent panel: speed and segmentation
Respondent panels, on the other hand, are structured specifically for research. These are people already willing to participate, with organized and segmentable profiles. This allows for quickly recruiting specific audiences and reaching larger volumes in less time.
In practice, panels usually generate faster responses with better adherence to the desired profile, especially in studies that require precise segmentation or when there is a need for scale.
If you want to accelerate your research with more profile control and quality in responses, it's worth checking out PainelTap. It's a practical way to access segmented respondents, reduce collection time, and transform hypotheses into insights more quickly. Want to know more? Talk to our team!!