Side income for executives: five options, ranked

Our pick for the best side income for executives who still have a job is paid expert calls on topics outside your own company, followed by one startup advisory role and, later, one outside board seat. We put them in that order because of rules that apply to a VP or C-level employee and not to most staff: limits on outside boards, a higher exposure to inside information, and expert network rules that keep you away from your own employer.

For the general version of side work while employed (contract clauses, pricing, taxes), read consulting side hustle.

1. Rank the options by how much approval and risk each one carries

For an employed executive, the deciding question is what your CEO, general counsel or board will approve. Here is our ranking for that reader, with our read of who usually signs off on each.

Rank	Option	Time	Pay	Approval needed
1	Paid expert calls and written answers	An hour at a time	Cash per call	Written employer consent at some networks for written or ongoing projects
2	Startup advisory role	A meeting a month	Mostly equity	Usually your manager or legal team, in writing
3	Private company board seat	Several meetings a year	Cash, equity or both	Usually your CEO or legal team
4	Outside public company board seat	Several meetings a year plus committees	Cash and stock	Often your own board, under a set limit
5	Project consulting	Weeks at a time	Cash per project	Hardest to get approved

Project consulting ranks last for a sitting executive because it takes the most time and looks most like a second job. The rest of this post explains the rules behind the order.

Short version: start with calls, add one advisory seat, and treat an outside board as a project for your company's approval process.

2. Expect a tight limit on outside public boards, sometimes one

Large companies write limits on outside board service into their governance rules, and the limit can be tighter for executives than for independent directors. Procter & Gamble's 2025 proxy statement says its employee directors "may sit on no more than one additional outside public board," unless a majority of non-employee directors grants an exception, while other non-employee directors may sit on up to three. The same proxy lists one outside public board each for the two executives on P&G's board at the time: its CEO (Eli Lilly) and its COO (Otis Worldwide).

The limits also come from the boards you would join. The proxy advisory firm ISS says in its 2026 US voting guidelines that it generally recommends voting against CEOs of public companies "who sit on the boards of more than two public companies besides their own." P&G applies a stricter rule to directors who are active public company CEOs: no more than one additional outside public board, counting their own company's board.

So if you are a public company executive, plan on one outside public seat at most, and on needing permission for it. Spend it on a board that teaches you something your current job does not. How to become a board member covers how to get the seat and the federal rule against sitting on boards of competitors.

3. Treat inside information as a bigger risk than it is for your staff

Executives see results, deals and plans before almost anyone else, so every paid conversation carries more risk. If you are an officer of a public company, the SEC already treats you differently: Section 16 insiders report most trades in company stock within two business days, and the company can recover profits from a purchase and sale within six months.

Planned trading is slower for you too. Under the SEC's amended Rule 10b5-1, directors and officers wait at least 90 days (and up to 120) after adopting a Rule 10b5-1 trading plan before trades can start, against 30 days for most other people, and must certify they are not aware of material nonpublic information when they adopt one.

None of that bans side income. It means two habits. Never take a paid call about your own company, its customers or its competitors' dealings with it. Never trade in a company you advised on a call until anything you heard is public. MNPI explains what counts as material nonpublic information and when sharing it becomes illegal.

4. Expect expert networks to rule out your employer as a topic

Expert networks already enforce the first habit. Guidepoint's summary of key rules says "Employees (including officers and directors) may not consult about their current employer," public or private, and the ban extends to its parent and subsidiaries. GLG's compliance page says employed experts "are prohibited from participating in projects about their employer" and, with some exemptions, need written employer consent for written, in-depth or ongoing projects.

That leaves a lot you can sell. A chief procurement officer at a retailer can talk about how large buyers evaluate logistics software, without saying a word about her own contracts. Expert network consulting covers sign-up, compliance training and rates.

Here is a made-up example. Daniel is CFO of a mid-size public industrial company and has spent ten years buying treasury software. He takes calls about treasury software buying in general, declines any call that names his company or its two biggest customers, and keeps a short log of each call's topic for his general counsel. The log takes two minutes a call and gives his general counsel a record if anyone ever asks.

5. Take advisory equity only where it cannot become a conflict

Startup advisory roles often pay in equity, which costs the startup no cash and gives you upside. The catch is the company. If a startup you advise later sells to your employer, you may have a personal stake in a deal your company signs.

Public companies have to disclose some of those stakes. SEC Regulation S-K Item 404 requires disclosure of transactions over $120,000 (less at smaller reporting companies) involving the company in which a director or executive officer has "a direct or indirect material interest." An interest that comes only from owning less than 10% of the other company does not count, so a typical advisor grant may never reach a filing. The conflict is still there: you would hold a stake in a vendor your own company pays.

So advise only companies that do not sell to, buy from or compete with your employer, and tell legal about each grant. When a company you like is a likely vendor, ask for cash for a defined project instead, or wait. Startup advisor compensation covers typical equity grants and vesting.

6. Get written approval with a narrow scope

A senior title raises the stakes of asking forgiveness instead of permission. Ask before you start, in writing. Name the activity ("paid expert calls on treasury software purchasing," not "some consulting"), exclude your company, its customers, suppliers and competitors, cap the hours a month, and say where the money comes from: an expert network, an advisory agreement or a board fee.

Send it to the person your code of conduct names. For an outside public board, expect your CEO or your own board to decide. Moonlighting policy has a sample request and explains how to find the clause that applies.

7. Start with one paid call this month

Calls are the easiest first step because each one has a set topic and length, which makes it easy to describe to your general counsel. On Instant Expert, a buyer invites you to a specific paid call or a written or voice answer and sets the amount up front. You receive the full amount offered, and you can reply with a higher price. You can claim your profile or see open paid requests on the request board.

Write the one-paragraph approval request before you accept the first call. It makes the side income something your company agreed to, instead of something HR finds out about.