---
title: "Customer Discovery Interviews: 15 Questions and How to Run Them"
slug: customer-discovery-questions-for-founders
description: "15 customer discovery interview questions that work, plus how to find interviewees, run a 20-minute call, and handle B2B buyer vs user splits."
canonical: https://preuve.ai/blog/customer-discovery-questions-for-founders
author: Vincent
author_credentials: Founder of Preuve AI
date: 2026-04-25
last_updated: 2026-08-17
read_time: 14 min
---

# Customer Discovery Interviews: 15 Questions and How to Run Them

15 customer discovery interview questions that work, plus how to find interviewees, run a 20-minute call, and handle B2B buyer vs user splits.

## Key takeaways

- **Finding 15 strangers is harder than asking the questions:** the messages that get answered are short, name a specific problem in the first line, and ask for 20 minutes of advice rather than a meeting. Plan on sending several times more than the number of calls you need.
- **15 questions organized by what they uncover:** current behavior, alternatives and workarounds, urgency and willingness to pay, plus the questions you should never ask and how to read polite answers that mean nothing.
- **Structure the call in three phases:** 60 seconds of context with no pitch, then past-behavior questions, and the last 5 minutes for soft commitment asks. If you talk more than 30% of the time, you are pitching.
- **In B2B, interview the end user first:** they reveal the real workflow and workarounds. Interview the economic buyer second to map budget, approval chains, and competing priorities.

## FAQ

### How many customer discovery interviews should I do?
10 to 15 interviews is the minimum for pattern recognition. After 10 interviews, you should see recurring themes. If every conversation surfaces a different problem, either your target customer definition is too broad or the problem is not painful enough. After 15 interviews with clear patterns, you have enough to make a decision.

### What is the difference between customer discovery and customer validation?
Customer discovery is about understanding the problem: who has it, how they deal with it, how painful it is. Customer validation is about testing your solution: does your product solve the problem well enough for people to pay? Discovery comes first. You cannot validate a solution if you have not confirmed the problem.

### Should I tell interviewees about my product idea?
Not until the last 5 minutes, if at all. The moment you pitch, the conversation shifts from honest discovery to polite encouragement. Ask about their current behavior, workarounds, and spending first. If you mention your idea, do it at the end and watch for commitment signals (asking for a beta, offering to pay) rather than generic praise.

### Should I pay people for customer discovery interviews?
It depends on the audience. For B2B professionals, the 2023 User Interviews incentive report recommends $100 per hour as a baseline for remote sessions, and its data shows no-show rates falling as the incentive rises. For early-stage founders interviewing peers, a $20 coffee gift card or a promise to share findings is usually enough. The main risk of paying is not signal corruption but attracting people motivated by the payment rather than by the problem. Screen harder if you pay: ask about the problem in your recruiting message.

### What if people say they love my idea but will not pay?
That is the most common outcome in customer discovery, and it is the entire point of doing interviews. Enthusiasm without commitment means the problem is not painful enough to pay for, or your positioning is off. Dig deeper: ask what they currently spend on workarounds. If the answer is nothing, the pain is not strong enough.

### Should I record customer discovery interviews?
Record if the interviewee consents. Ask before starting: "Do you mind if I record so I can focus on listening?" A phone-based transcription app lets you maintain eye contact instead of typing notes. If they decline, take handwritten notes and write up full notes immediately after the call. Waiting even an hour degrades recall significantly.

Canonical HTML version of this post: https://preuve.ai/blog/customer-discovery-questions-for-founders