What interviewers are really worried about
When an interviewer asks "aren't you overqualified for this role?" they are not complimenting you. They are expressing a specific concern: that you will take the job out of desperation, become bored or resentful within months, and leave as soon as something more suitable comes along. This costs the employer time, money, and team disruption. Their question is really: "Are you going to leave in six months? And will you be actively engaged while you are here?" Your job is to address those two concerns directly and credibly — not to reassure vaguely that you are very interested in the role.
Being honest about why you want the role
The most credible answers to the overqualified question give a genuine, specific reason why this role at this level makes sense for you right now. Credible reasons: you are changing career direction and genuinely need to start at a more junior level in the new field; the role offers specific experience (technology, sector, type of work) you do not currently have and genuinely want; you are prioritising work-life balance or reduced stress after a demanding period; you are relocating and the local job market is smaller; the company specifically is somewhere you want to work and this is the available opportunity. Vague enthusiasm ("I am very excited about this role") does not address the concern. A specific reason does.
Example answers
"I understand that my CV looks more senior than this role. I want to be honest about why I am applying: after ten years in strategy consulting, I want to move into operational finance and this role gives me direct P&L responsibility for the first time. I am genuinely willing to earn that step. I am not applying here because I cannot find a senior consulting role — I am applying because this is the experience I am deliberately choosing to get."
Alternative (work-life balance reason): "I have spent the last seven years in a director-level role that required constant travel and very long hours. I now have young children and I want to be genuinely present for them for a few years. This role offers a meaningful contribution without the same demands on my time. I am not doing this reluctantly — I have thought about it carefully and this is where I want to be."
Both answers are credible because they are specific and honest. They explain the reason without being defensive and they address the "will you leave?" concern directly by showing the decision is intentional, not desperate.
Addressing the longevity concern
Even if your reason is credible, the interviewer may still worry you will leave when something better appears. Address this directly: "I know the concern is whether I will stay. I can tell you that I am not using this role as a temporary landing spot. [Your specific reason for staying long term — the company, the sector transition, the team, the work]. I want to build something here, not pass through." If you have previously stayed in roles for multiple years, mention it: "I am someone who tends to stay and grow rather than move for incremental steps — in my last role I was there for five years." Track record of loyalty is the most credible evidence you can offer.