Guide · EasyCofounder

Startup advisors: how to choose, compensate and work with them

A good advisor can save a young team months of trial and error, while a poor choice can cost equity and bring nothing. This guide explains when to bring in advisors, how to choose them, what to offer in return and how to formalise the relationship, and how an advisor differs from a co-founder, a mentor and a paid expert.

Updated on 5 min readBy the EasyCofounder team

In short

  • An advisor helps the founders on a specific topic without being an employee or a co-founder.
  • Choose an advisor for a skill your team lacks, not just for a famous name.
  • Scope, duration, confidentiality and compensation belong in a written agreement.
Contents
  1. Advisor, mentor, expert or co-founder: what is the difference?
  2. When does a startup need advisors?
  3. How do you choose a good advisor?
  4. What should you offer an advisor in return?
  5. What should an advisor agreement include?
  6. Frequently asked questions
  7. Glossary
  8. About this guide

Advisor, mentor, expert or co-founder: what is the difference?

These roles are often mixed up, yet they involve neither the same commitment nor the same compensation. Telling them apart from the outset stops you from promising equity to someone who only gives occasional advice.

The main roles around the founders
RoleInvolvementUsual compensation
Co-founderFull time or close to it, shares the risk with youSignificant equity, with vesting
AdvisorA few hours a month on a defined topicVoluntary, fees or a small equity stake
MentorGeneral guidance, often through a programmeUsually voluntary
Paid expertSpecific, limited assignment: legal, accounting, technicalFees or a quote
Advisory boardSeveral advisors meeting at regular intervalsSet out in each advisor’s agreement

When does a startup need advisors?

There is no universal right moment. An advisor makes sense when a specific need appears that the team cannot cover alone.

  • Entering a regulated or highly specialised market, such as health, finance or energy.
  • Preparing a first funding round with no experience of investors.
  • Building a sales team or a pricing strategy.
  • Opening doors to large accounts or industrial partners.
  • Making a major technical decision, such as an architecture or infrastructure choice.

Before your first customer, one or two well-chosen advisors are plenty. A formal advisory board mostly makes sense once the company grows and several topics need following over time.

How do you choose a good advisor?

A prestigious name on your website is worthless if the person has neither the time nor the wish to help you. Look first for experience that matches the problem you face right now.

  • They have already solved the problem you are dealing with, in practice.
  • They have time and commit to realistic availability.
  • Their advice fits your values and the way you work.
  • They have no conflict of interest with a competitor or customer.
  • You have tested the relationship over one or two conversations before formalising it.

Good places to look include the programmes described in our guide to incubators and accelerators, the schools, incubators and founder networks on our partners page, and the business angels and funds in our investors area, many of whom advise the founders they meet. For a one-off assignment, the experts directory lets you call on a specific skill.

Fictional example

A startup building software for pharmacies is torn between several sales models. It approaches a former sales director from the sector, suggests three trial calls and then a one-year agreement with a monthly meeting. Her advice helps the team avoid a pricing mistake before launch.

What should you offer an advisor in return?

Compensation depends on the involvement you expect and the value the advisor brings. Several options exist and they can be combined.

  • Voluntary help, common for mentors and for advisors who want to support the ecosystem.
  • Fees or payment per assignment, suited to a limited and clearly defined need.
  • A small equity stake, kept for advisors who are genuinely committed over time.

If you offer equity, choose the instrument carefully. In France, BSPCE are in principle reserved for employees and certain officers, so an outside advisor more often receives share warrants (BSA) whose price and terms should be set with a lawyer or accountant. Other countries have their own schemes, so get local advice.

What should an advisor agreement include?

Even with an unpaid advisor, a written document clarifies expectations and protects the company. It can be short but should cover a few essentials.

  1. 1Describe the scope: topics covered, any deliverables and expected availability, for example one meeting a month.
  2. 2Set a limited term, often renewable, and the conditions for ending early.
  3. 3Include a confidentiality clause covering the information shared.
  4. 4State that work and ideas produced during the engagement belong to the company.
  5. 5Write down the compensation and, where relevant, the vesting schedule.
  6. 6List the conflicts of interest to disclose and how the advisor’s name may be used.

Frequently asked questions

What is a startup advisor?

An experienced person who advises the founders on a specific topic for a few hours a month, without working in the company day to day or being a co-founder.

How much equity should an advisor get?

There is no fixed rule. The stake depends on involvement and value, generally stays well below a co-founder’s and should vest progressively. A lawyer can help you choose the right instrument.

Can an advisor receive BSPCE in a French company?

In principle, BSPCE are reserved for employees and certain officers, so an outside advisor more often receives share warrants (BSA). The right solution should be confirmed with a professional.

Should you set up an advisory board at launch?

Rarely. One or two advisors chosen for specific needs are enough at the start, and a formal board becomes useful when several topics need following over time.

Glossary

Advisor
Outside adviser who helps the founders on a specific topic, without being an employee or a founding shareholder.
Advisory board
Consultative group of several advisors, with no decision-making power in the company.
BSA
French share warrant giving the right to buy shares at a price set in advance.
Advisor agreement
Contract setting out an advisor’s scope, term, confidentiality and compensation.

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Further reading

About this guide

This guide was written by the EasyCofounder team — a platform that connects founders, talents and startups — and was last updated on November 11, 2026. It draws on common startup practice and on the questions our members ask.

How we write, review and update our guides is explained on our About page.

It provides general guidance and is not legal, tax or financial advice. For your own situation, consult a qualified professional (lawyer, accountant) and the official resources available in your country.