How VCs Run Founder Reference Checks (and How to Prepare)

A founder reference check is the set of calls a venture investor makes to people who have worked with you, to test whether you are as good as the pitch suggests. Investors typically call the references you provide, then run backchannel references with people you did not name. In our view, the backchannel calls often carry more weight.

You can't control who they call. You can usually shape what they hear, by preparing your list, briefing your references and getting ahead of any weak spots. If you are the investor running the calls, the venture capital due diligence guide covers the process from that side.

Definition: A backchannel reference is an off-list call an investor makes, without the founder's involvement, to a former colleague, manager, co-founder, investor or customer, in order to get an unfiltered view of how the founder operates.

Why this matters so much: early-stage investors are largely betting on people. In the survey of 885 venture capitalists at 681 firms by Paul Gompers, William Gornall, Steven Kaplan and Ilya Strebulaev (NBER working paper 22587, published in 2016), 95 percent of VC firms rated the management team as an important factor and 47 percent called it the most important one. The same survey found that the average deal involved about 118 hours of diligence and 10 reference calls.

At pre-seed, there are few metrics to check. So the calls about you are often a big share of the diligence.

Your reputation gets checked before your deck gets read

We treat reputation as part of the round. At pre-seed and seed, references can outweigh a polished pitch. An investor who hears two or three exceptional people describe the same rare strength will forgive a rough first meeting. One who hears hesitation will discount a great one.

Given the choice, we'd rather a founder spend an afternoon preparing references than another afternoon on slide design.

Three things tend to follow from that.

Your reputation often arrives before you do. For the largest and most competitive rounds, some senior investors won't write a check unless they, or someone they trust, already knows the founder. When an operator they respect calls you one of the best people they've worked with, that single call can move a partner more than your metrics.
Strong signal tends to come from exceptional people. A strong operator can spot another strong operator quickly; an average colleague often can't tell great from good. So the references that count most are usually the most demanding people who have seen your work up close, not the ones who like you most.
Investors compare notes. A story that doesn't hold up tends to travel. Backchannel calls catch inflated revenue claims and invented histories, and when one firm finds a problem, other firms often hear about it. Consistency is cheap protection.

How VC reference checks work: on-list, backchannel and customer calls

Expect three kinds of calls. Each tests something different.

On-list references. The names you give when asked. The investor assumes these people like you, so the calls test consistency: do your references describe the same strengths and the same history you did? A mismatch between your story and theirs hurts more than a mild criticism.
Backchannel references. People the investor finds through their own network: a former manager, a peer at your last company, an engineer who reported to you, an investor who passed on your last round, an angel already on your cap table. Your current backers are the first backchannel for any new lead, especially at Series A, so it helps if your seed investors tell the same story you do. Careful investors borrow a courtesy from executive hiring and avoid anyone at a person's current employer. If you are still employed while you raise, say so.
Customer and user calls. Calls to buyers and users about the product, not about you. They belong to commercial diligence and are covered in the guide to customer references and referrals. This guide stays with references on the founder.

When reference checks happen in the process

Assume the calls start earlier than you think.

Before the first meeting. Some backchannel starts as soon as a partner hears your name. An investor who shares a former employer with you may text an old colleague before you've sent a deck.
Between the partner meeting and the term sheet. This is where most founder references land. The sponsoring partner wants them before arguing for the deal internally.
After the term sheet, before closing. On-list references and any remaining backchannel calls are often finished during confirmatory diligence, alongside legal and financial checks. The venture capital due diligence guide walks through that full timeline from the investor's side.

In a fast round, the whole sequence can compress into a few days. That's why we suggest having your list ready before you start fundraising, not after an investor asks.

What VCs ask in founder reference checks

Good reference calls ask for stories, not ratings. It may help to prepare your references for five themes:

Spike. What is this person unusually good at, and how do you know? What's a specific example?
Speed and judgment. How fast do they learn? What's a decision they made with incomplete information?
Recruiting. Would strong people follow them? Would you work for them again?
Candor and coachability. How do they take bad news, disagreement or feedback? What happens when they're wrong?
Integrity. Have you ever seen them shade the truth, overstate a number or leave a mess for others?

Then come the calibration moves, most of them borrowed from good recruiting practice. Rate the person on a 1 to 100 scale rather than 1 to 10. Explain why the score wasn't a point higher. Name someone else who could explain why hiring the person might be a mistake. Many investors use some version of all three, so warn your references that the scale question may come.

Investors also listen for what a reference leaves out. A long pause. Faint praise. "Great employee" with no example attached.

Two calibration traps are worth knowing, because they can cut for you or against you:

Culture and temperament change the scale. References in some countries and industries rarely give top marks, so a seven out of ten from a reserved German or French reference can mean more than a nine from an enthusiastic American one. A measured reference from a demanding person can be stronger praise than a gushing one.
A great employee is not always a great founder. A glowing reference from a former boss mainly shows you were excellent inside someone else's system. Investors want evidence you can build the system: hire, sell, decide and recover without a manager.

The worst-reference question and how to answer it

Have an answer ready for the question of who your worst reference would be. The sharpest version comes from Sequoia, where partner Julien Bek traces it to Doug Leone: ask the founder for their best reference and why, then for their worst reference and why, and then actually call the worst one. Founders who name that person plainly, with context, give the investor far more to work with than the ones who dodge.

We read the question as a test of self-awareness more than a request for a phone number. Most investors aren't looking for a flawless record. They're looking for a clear, honest account. A strong answer takes two or three sentences:

Name the person and the relationship.
Say what went wrong and which part of it you own.
Say what you do differently now, with one piece of evidence.

Rehearse it once out loud. A founder who answers this cleanly usually earns more trust than one whose references are all glowing.

How to prepare for VC reference checks: a reference-readiness checklist

Preparation isn't coaching people to say nice things. It's making sure the right people are ready, informed and reachable.

Map everyone an investor could find. List former managers, peers, direct reports, co-founders from earlier projects, prior investors and early customers. A fair working assumption: an investor can reach anyone on your LinkedIn with one intermediary.
Pick five to seven on-list references. Try to cover each major role you've held, with at least one person who managed you, one who reported to you, and one current investor or advisor. Include a co-founder if you have one. Favor the most demanding people who know your work, not the friendliest.
Ask permission and warn them early. A reference who gets a surprise call from a stranger gives a guarded answer. Tell them which firms may call and roughly when.
Brief them in writing. Send a short note: what the company does, the round, two or three strengths the investor will care about, and one honest weakness you're working on. Don't script them. Investors can often hear a script.
Decide your worst reference before you're asked. Know who it would be, what happened, and what you learned, in two sentences.
Align your existing investors. Make sure seed investors, angels and advisors describe the metrics, the plan and your strengths the same way you do.
Keep your story consistent everywhere. Dates, titles and claims on your deck, LinkedIn and bio should match what references remember.
Follow up and say thank you. Tell references when the round closes. You'll likely need them again.

For the paperwork side of the same process, see the startup due diligence checklist and the data room checklist.

How to handle a bad reference

Most founders with a real track record have someone who would criticize them. That's normal. The goal, as we see it, is to make sure the investor hears the criticism with context.

Get ahead of it. If there's a known conflict (a co-founder split, a fired employee, a failed company with unhappy investors), raise it yourself before references start. Explain what happened, what you own and what changed.
Offer a second witness. Give the investor someone who saw the same situation from another angle, rather than someone who will simply contradict the critic.
Don't ask anyone to retract. Pressuring a critic, or asking mutual contacts to lean on them, can turn a mild negative into a deal-killer fast if the investor hears about it.
Don't argue the details. If an investor raises a negative reference, listen, acknowledge the part that's fair, and describe what you do differently now. Defensiveness tends to confirm the criticism.
Separate style from integrity. "Demanding" or "impatient" is a style comment most investors can live with. Anything that suggests dishonesty deserves a direct, factual answer and documentation where possible.

Where investors disagree

Investors split on two questions that can change how you prepare.

Likability versus results. One camp holds that likability doesn't predict returns, and that traits like arrogance can be the price of an exceptional strength. To them, a reference who calls you hard to work with isn't disqualifying if the same person describes a real spike. The other camp weights collaboration and coachability heavily, especially at seed, where the board relationship lasts years. You may not know which camp an investor sits in. Our suggestion: make sure your references can speak to both your spike and how you handle conflict.

Which founders to call when you check a VC. CRV's founder guide to reference-checking investors (April 2026) pushes founders to go beyond the VC's own list and include founders of companies that missed their targets. Jason Lemkin of SaaStr, in a June 2023 post, takes a more measured line: failed-company conversations are fine, but founders who reached some scale usually teach you more, because failures are messy. We think both are useful. Struggling-company founders show you how a partner behaves under stress. Scaled-company founders show you whether the partner adds value on the way up.

Reverse reference checks: how to check a VC before you sign

Check the partner as carefully as they check you. A lead investor may sit on your board for most of a decade. That's a longer commitment than most of your hires will make.

So start early. Identify founders a target investor has backed while you're still building the list, rather than scrambling once a term sheet arrives. CRV's guide suggests five to seven conversations mixing the VC's own references, independent backchannel calls and founders from companies that struggled, held after the term sheet arrives but before you sign it.

Focus on the partner who will sit on your board, not the brand. Questions for portfolio founders:

How often did the partner contact you after the money arrived, and was it useful?
Did the partner who led the deal stay involved, or were you handed to someone junior?
What did they do in your worst quarter? Walk me through a specific board meeting.
Did they disagree with you in private or in front of the board?
Did they invest in your next round, and did they help you raise it?
How did they behave when the company needed a bridge, a down round or a sale?
Did they ever push to replace a founder or bring in an outside CEO? How was it handled?
Did they keep the promises they made during the pitch?
If you raised again tomorrow, would you take their money?
What do you wish someone had told you before you signed?

You might ask the partner two direct questions too: what was your worst investment and what did you learn, and which CEO do you respect most? Hedged answers, reluctance to connect you with founders of failed companies, and a partner who vanished after closing are all worth a second look.

Worked example: the odds that a backchannel finds your critics

Some founders assume a critic stays hidden if they leave that person off the list. Simple probability suggests otherwise.

Take the survey's average of 10 reference calls and assume an investor splits them into 3 on-list calls and 7 backchannel calls. Now assume, as an illustration, that 1 in 5 people who worked closely with you would describe a real weakness if asked. The chance that at least one of the 7 backchannel calls reaches such a person is 1 minus 0.8 to the seventh power, or about 79 percent. Over all 10 calls it is about 89 percent. Even if only 1 in 10 of your colleagues is a critic, 7 backchannel calls reach at least one about 52 percent of the time.

The lesson from this illustrative math isn't that references are dangerous. It's that the investor will probably hear the criticism anyway, so the thing you can most control is whether they hear your honest version first.

The reverse check is cheap by comparison. Six calls at 30 minutes each, plus 15 minutes of preparation per call, is 4.5 hours. Set that against a board relationship that can last most of a decade.

Common mistakes founders make with reference checks

Listing only fans. A list of close friends and admirers signals that you don't know your weaknesses, which is exactly what the worst-reference question is built to expose.
Surprising your references. An unprepared reference sounds hesitant, and hesitation reads as a negative.
Over-scripting. Identical phrases from three references tell the investor you wrote their lines.
Ignoring your cap table. Existing investors are often the first backchannel for any new lead. If one of them is lukewarm, deal with it before you raise.
Skipping the reverse check. Founders spend weeks choosing an investor and minutes checking them. The term sheet guide covers what you sign; reference calls cover who you sign with.
Starting too late. Build your list while you build your investor pipeline, so a fast process doesn't force a rushed one. We think of the whole raise as a pipeline you run on purpose (our take on building a fundraising process), and references belong in it from day one.

Founders raising their first institutional round often underestimate how far their network reaches, in both directions. 1752vc's Accelerate program invests $100K at a valuation cap of up to $3.5M in early-stage startups, teaches founder-led sales, and connects founders to a network of 850+ investors. A wider investor network helps twice during a raise: more warm paths to a lead, and more people who can tell you, off the record, how a given partner behaves after the wire.

The bottom line

References are the part of diligence you can't fake and can't fully control. What you can do is make sure the investor hears a consistent story, from demanding people, with your weak spots already on the table.

The deck is what you say about yourself.

The backchannel is what everyone else says when you're not in the room.

Key takeaways

Investors often weight backchannel references more heavily than the names you provide, and the survey by Gompers and colleagues found an average of 10 reference calls per deal.
In our view, the most useful references tend to be demanding, exceptional people who have seen your work up close, not the people who like you most.
It helps to have a two or three sentence answer ready for your worst reference: who, what went wrong and what you own, and what changed.
One way to handle a bad reference: raise it first, offer a second witness, and avoid pressuring the critic.
Consider running your own reference checks on the partner, including founders of companies that struggled, before you sign a term sheet.

Frequently asked questions

How do VCs do reference checks on founders?

VCs typically call the references a founder provides, then run backchannel calls to people the founder did not name, such as former managers, peers, direct reports and existing investors. They ask for specific stories about the founder's strengths, judgment, recruiting and candor, and listen for hesitation. A survey of 885 VCs found an average of 10 reference calls per deal.

Who do VCs call for backchannel references?

Investors look for people who worked closely with you but are not on your list: former bosses and peers, people who reported to you, co-founders from earlier projects, angels and seed investors on your cap table, and investors who saw your previous rounds. In our view, the views that carry most weight tend to come from exceptional, demanding people who can judge exceptional talent.

When do VCs do reference checks?

In many processes, most founder reference calls happen between the first partner meeting and the term sheet, because the sponsoring partner wants them before the investment committee. Some backchannel calls start before you ever meet, and on-list calls are often finished during confirmatory diligence after the term sheet. In a fast round the whole process can take a few days.

What should I do if a VC gets a bad reference about me?

One approach is to raise the issue yourself if you can see it coming, and explain what happened, what you own and what changed. Offer a second person who saw the same situation from another angle. We would avoid asking the critic to retract or pressuring them through mutual contacts. Acknowledge what is fair in the criticism rather than arguing the details, because defensiveness tends to confirm it.

Should founders do reference checks on investors?

In our view, yes. A lead investor may sit on your board for years, so consider talking to five to seven founders the partner has backed before you sign, including founders of companies that struggled or failed. Ask how the partner behaved in bad quarters, whether they invested again, and whether the founder would take their money again. Ideally, start early and finish before signing.

Sources

Disclaimer: This guide is for general education only and is not legal, tax or investment advice. Laws, market data and program terms change, so it may not reflect the latest developments or fit your situation. Treat it as a starting point, not a source of truth, and talk to a qualified lawyer, accountant or financial adviser before you make decisions.