Due Diligence: What It Is, What to Expect, and How to Make It Out Alive

Due Diligence: What It Is, What to Expect, and How to Make It Out Alive

What actually happens between the term sheet you just signed and the money landing in your account?

Fundraising due diligence happens. It’s the investigation an investor runs after a term sheet and before a wire, to confirm that your financials, cap table, contracts, intellectual property, and tax position match the story you told in the pitch. The term sheet is where a venture deal gets agreed. Diligence is where it gets confirmed, repriced, or lost.

Most of what kills a round at this stage was already true weeks earlier. It just wasn’t written down anywhere an investor could see it.

What fundraising due diligence actually is

Diligence is a structured investigation, not a conversation. It starts after a term sheet is signed, it runs on a written document request list, and it ends at a close or at a renegotiation. The investor’s team works the list, tests what they find against what you claimed, and decides whether the risks they turned up are priced into the offer they already made.

Five workstreams usually run in parallel, often with different people on each:

• Financial. Historical statements, the revenue build, unit economics, burn, runway, and the model behind your projections.
• Legal and corporate. Charter, bylaws, board and stockholder records, securities compliance, cap table, contracts, and litigation.
• Commercial. Customer reference calls, cohort retention, competitive position, and pipeline quality.
• Technical. Architecture, security posture, open source license exposure, and key-person risk in engineering.
• Team. Backchannel reference calls, prior-employer conflicts, founder vesting, and role clarity among co-founders.

All of it lands in a data room, which is just the repository where your corporate, financial, tax, legal, commercial, and people documents live so an investor’s team can work through them without emailing you forty times.

Three things diligence is not

It’s not the pitch. The pitch persuades. Diligence verifies. In the pitch you assert that net revenue retention is 118 percent. In diligence, an associate rebuilds it from your billing data and tells the partnership what they got.

It’s not an audit. An audit is an attest engagement that ends with an opinion on whether your financial statements are fairly presented. Diligence ends with an internal memo to an investment committee. No opinion, no standards body, no report you can hand to a bank. At later rounds you may also meet a quality of earnings review, which is a consulting engagement focused on normalized EBITDA, a proof of cash, and revenue recognition testing. It produces findings and adjustments, not an opinion.

It’s not M&A diligence. A buyer acquiring your company is underwriting liabilities they’ll inherit forever, which is why financial due diligence in a sale runs on a different clock and a different tolerance. The document lists overlap heavily. The tolerance for mess does not. A buyer holds back purchase price in escrow against a tax exposure. A venture investor usually makes you fix it before the close, or reprices.

Your term sheet is less binding than you think

This is the thing first-time founders get wrong. A signed term sheet is not a signed deal.

The NVCA model term sheet, the industry-standard form maintained by the National Venture Capital Association, is non-binding as to the economic and governance terms. Those become enforceable only when they’re restated in the definitive documents, meaning the Stock Purchase Agreement, the Investors’ Rights Agreement, the Voting Agreement, and the Right of First Refusal and Co-Sale Agreement. What does bind from signature is usually confidentiality, the no-shop, and expenses. NVCA publishes its model financing documents free, with the core forms last updated in October 2025 and June 2026.

Read the asymmetry carefully. The no-shop stops you from talking to other investors for a defined window, commonly 30 to 60 days. Nothing in the rest of the term sheet stops the investor from walking. That isn’t a trap. It’s the design. Diligence exists so an investor can withdraw when the facts don’t hold.

One more item to catch before signature. Term sheets routinely require the company to reimburse investor legal fees at closing. Negotiate the cap before you sign, not after counsel has billed.

Who’s actually on the other side of the table

Founders picture “the investor.” In practice you’re dealing with four or five people who have different jobs and different clocks.

• The associate or principal owns the request list, chases missing items, and builds the internal model. This is most of your day-to-day contact.
• The partner owns the decision, makes the reference calls that matter, and reads the memo.
• Investor counsel runs the corporate, IP, employment, and securities review. Their memo drives the representations in the Stock Purchase Agreement and the exceptions in your disclosure schedule.
• Your own counsel drafts the definitive documents. Your accountant, whether in-house or an outside partner like indinero, owns the financial and tax portions of the list.
• Third-party providers show up at later stages. A quality of earnings firm, a commercial diligence firm, sometimes a security reviewer.

Investor counsel also checks the securities history of every prior round. Most venture rounds are private placements under Regulation D, and the SEC requires a Form D notice within 15 days after the first sale in the offering. Missed Form D filings from a seed round are common, fixable, and awkward to discover in week three.

Then there’s the disclosure schedule, which lists every exception to the representations your company is about to make. It consumes more founder hours than anything else in the close, and nobody warns you about that either.

The document request list, category by category

The request list is knowable in advance. Cooley LLP publishes a sample VC due diligence request list founders can work from directly, and it maps to six categories. Here’s who should own each one inside your company and what a clean answer looks like.

Category	Who owns it	What a clean answer looks like
Corporate and governance	Company counsel	Charter and every amendment, bylaws, good standing certificate, board and stockholder consents for every action since formation, stock ledger, Form D for each prior round
Financial	Finance lead or fractional CFO	Accrual-basis monthly statements, trial balance and general ledger export, bank reconciliations, AR and AP aging, revenue by customer and month, the model behind your projections
Tax	Your accounting and tax team	Filed federal and state returns for all open years, Forms 941, 1099s for every contractor, sales and use tax registrations and returns by state, R&D credit studies, any open notices
Legal and IP	Company counsel	Signed invention assignments from every founder, employee, and contractor, registered IP, an open source license inventory, litigation and demand letters, D&O policy
Commercial	Revenue leader	Executed top customer contracts, your standard form plus every negotiated deviation, reseller and partner agreements, cohort retention and churn data
People	People ops with counsel	Employee census, offer letters and invention assignment agreements, contractor agreements with the classification basis, the equity plan, every option grant with its board consent, all 409A reports

Structure your data room folders to mirror that list, not your internal file system. Use dated, descriptive file names. Give the investor working files rather than scans wherever the underlying numbers matter, because a PDF of a revenue build is a way to annoy the analyst who has to rebuild it anyway. If a round is on this year’s calendar, our Series A checklist is a reasonable place to start assembling.

How long fundraising due diligence takes

It scales with stage, and the honest answer is longer than the plan.

• Pre-seed and seed. Days to a couple of weeks, usually with no third-party providers. The investor confirms incorporation and IP assignment, reads the cap table, calls two or three references, and closes.
• Series A. Commonly three to six weeks. This is the first round with a real request list, a full corporate and IP review by investor counsel, and an investment team that rebuilds your revenue model from raw data. Our guide to Series A accounting covers what that team expects to find.
• Series B and later. A month or more. Quality of earnings enters the picture, commercial diligence may go to a specialist firm running a full customer survey, and tax becomes its own workstream.

Plans and outcomes diverge here, which is why founders feel ambushed. Term sheet to initial close is often planned at roughly four weeks, with drafting, disclosure schedules, diligence, and closing coordination all running at once. The survey of 885 institutional venture capitalists by Gompers, Gornall, Kaplan, and Strebulaev, published in the Journal of Financial Economics in 2020, found the average deal took 83 days to complete, with 118 hours of investor diligence time and 10 reference calls.

Four weeks is the plan. Eighty-three days is the average. Plan against the average.

Intensity isn’t fixed either. Hot rounds get lighter diligence and slower markets get heavier diligence, so don’t calibrate on what a friend went through in 2021.

What actually kills rounds in diligence

Nobody publishes a credible failure rate for signed term sheets, so discount anyone who quotes you one. What is well documented is the category of finding.

• Broken IP chain of title. The most common and the most expensive. A founder who wrote the first version before incorporating and never assigned it. A contractor who built a core service and signed nothing. Your ability to fix this disappears the moment money is wired, which is exactly why investors won’t close around it.
• Cap tables that don’t reconcile. SAFE conversions modeled wrong. Option grants promised in an offer letter and never approved by the board. A stock ledger that doesn’t tie to the signed documents. If you’re fuzzy on what belongs in one, start with what a cap table is, then reconcile yours to executed agreements rather than to a spreadsheet someone maintained by hand.
• Missing board consents. Delaware lets a board act without a meeting when all directors consent in writing, and those consents have to be filed with the minutes. Every grant, issuance, officer appointment, and financing needs one. Investor counsel builds a timeline and finds the gaps.
• 409A and option-grant problems. A 409A valuation supports a safe harbor for 12 months or until a material event, whichever comes first. Grants issued on a stale valuation expose the holder to Section 409A penalty tax. The sibling problem is a missing Section 83(b) election, due within 30 days of transfer and now filed on IRS Form 15620. Miss the window and it can’t be cured retroactively.
• Undisclosed litigation and contract terms. Change-of-control clauses, uncapped indemnities, unusual termination rights, or a demand letter from a former employee that nobody mentioned.

The pattern underneath all of them is trust. Surprises kill deals. Problems usually don’t.

The tax and accounting findings most checklists miss

Generic diligence checklists cover legal and financial ground well. They rarely cover the findings that most often turn into a repricing conversation for a growth-stage SaaS company.

Multi-state sales tax. In South Dakota v. Wayfair, decided in June 2018, the Supreme Court held that physical presence isn’t required for a state to impose a sales tax collection obligation. Every state with a sales tax now has economic nexus rules, many set around $100,000 in sales or 200 transactions, and some states have since dropped the transaction count. Whether your subscription is taxable varies state by state. A company selling nationally can cross thresholds in a dozen states without registering anywhere, and the exposure is uncollected tax plus penalties and interest. Voluntary disclosure agreements typically limit the lookback and waive penalties, but only before a state finds you.

Contractor classification. The IRS applies a common-law test covering behavioral control, financial control, and the relationship of the parties. A population of full-time “contractors” working fixed hours under direction on company equipment is a payroll tax exposure that scales with headcount and years. Section 530 relief can protect you, but only if you filed the required 1099s consistently. If you never filed them, that relief is off the table. Nexus assessment and classification review are ongoing compliance work at indinero, not an emergency discovered by investor counsel.

Revenue that doesn’t survive ASC 606. Bookings presented as revenue. Annual prepayments recognized up front instead of ratably. A signed pilot counted as a paying customer. The accounting adjustment is usually survivable. The credibility damage is worse, and fundraising accounting problems start here more often than anywhere else.

When diligence finds something anyway

Assume something turns up, because it usually does. Your options, in rough order of severity:

1. Fix it before close. Chase the missing assignment, file the late Form D, adopt the board consents, register in the state.
2. Disclose it on the schedule. The exception gets written against the relevant representation and the deal proceeds.
3. Covenant to fix it. Pre-closing or post-closing remediation commitments, the usual approach for systemic issues.
4. Price it. A valuation adjustment, a larger option pool, or a special indemnity.
5. Lose it. The deal dies, the no-shop expires, and you go back to market carrying a diligence process the next investor will ask about.

Which outcome you get depends less on the size of the problem than on when it surfaced and who surfaced it. A known litigation matter you raise in week one is a disclosure schedule line item. The same matter investor counsel finds in week four is a trust problem. Disclose early, in writing, with your proposed fix attached.

Your pre-diligence readiness list

Diligence-ready isn’t a project you start after a term sheet. It’s a state you maintain. Most of the data room can be assembled before you take a single pitch meeting, and none of that work expires.

1. Get on accrual basis and close monthly. Cash-basis books don’t survive a Series A. Revenue recognized in the period earned, deferred revenue on the balance sheet, close finished within 10 business days. This is also why investors expect GAAP before they think to ask for it.
2. Build the ARR-to-revenue bridge before anyone asks. Every difference between reported ARR and recognized revenue needs a named, defensible reason.
3. Reconcile the cap table to signed documents. Every share, option, SAFE, and note traced to an executed agreement and a board approval. Model every conversion at the anticipated round terms so you know your post-money ownership before the investor tells you.
4. Chase every invention assignment. Founders, employees, contractors, no exceptions. Where a founder built something before incorporation, execute a technology assignment. Run an open source inventory while you’re in there.
5. Run a nexus study and fix what it finds. Map where you have sales tax and income tax obligations based on revenue, transactions, and where your remote employees actually live. Quantify the exposure, register prospectively, and evaluate voluntary disclosure in the states with material amounts.
6. Review contractor classification and 1099 filing history. Before an investor does.
7. Order the good standing certificate early. It’s cheap and fast, unless a lapsed franchise tax filing turns it into a fire drill.
8. Name one owner for the request list. Usually the finance lead or a fractional CFO. Not the CEO, who has a company to run, and not four people in parallel, which is how the same document gets sent three times in two versions.

Then keep operating. Response speed is itself a diligence signal, and an investor who waits nine days for a trial balance draws a conclusion about your operations that has nothing to do with the trial balance. Missing the numbers you showed during the raise sits near the top of every list of ways a financing implodes after a term sheet. Protect sales and delivery capacity even while finance and legal capacity gets consumed.

Diligence doesn’t create problems. It finds the ones you already had, at the least convenient possible moment. At indinero, accounting, tax, and fractional CFO advisory sit inside one CPA-led engagement, so your financial statements, your tax filings, and your supporting documentation say the same thing when an investor reads all three. Pricing starts at $750/mo. Continuous operations since 2009 also matters when a diligence team asks who has been maintaining your prior-year books. If a raise is on the horizon, talk to us about accounting services before the term sheet, not during the no-shop.

This article is for informational purposes only and isn’t legal, financial, accounting, or tax advice. Venture terms, securities requirements, and state tax obligations vary by company and by jurisdiction, and they change. Talk to qualified counsel and a CPA about your situation before acting.

Frequently asked questions

Founders ask the same handful of questions once the term sheet is signed and the request list lands. Here are the ones that come up most, answered plainly.

How long does due diligence take after a term sheet is signed?

Fundraising due diligence typically runs three to six weeks at Series A and a month or more at Series B. Seed rounds often close in days to a couple of weeks, with no third-party providers involved. Plan against 83 days, the average deal length from a survey of 885 institutional venture capitalists, rather than the four weeks a closing plan implies.

What documents do investors request during fundraising due diligence?

Investor request lists in fundraising due diligence cover six categories: corporate and governance, financial, tax, legal and IP, commercial, and people. Expect accrual-basis monthly statements, a general ledger export, bank reconciliations, AR and AP aging, filed federal and state returns, 1099s, every option grant with its board consent, and all 409A reports. Structure your data room to mirror those categories, and give investors working files rather than scans wherever the numbers matter.

Is a signed term sheet binding, and can the investor still walk away?

A signed venture term sheet is mostly non-binding, and an investor can walk away during due diligence without breaching it. In the NVCA model form, economic and governance terms bind only once they’re restated in the definitive documents, while confidentiality, the no-shop, and expenses bind from signature. That asymmetry is deliberate, so negotiate the no-shop window and the investor legal fee cap before you sign.

Do you need audited financials or GAAP books to raise a Series A?

Most Series A rounds don’t require audited financials, but they do require accrual-basis GAAP books that an investor’s analyst can rebuild. Diligence isn’t an audit, and it ends with an internal investment memo rather than an opinion. Cash-basis books rarely survive that review, which is why indinero closes clients monthly on accrual GAAP and builds the ARR-to-revenue bridge before an investor asks for it.

What findings most often derail a round during due diligence?

Broken IP chain of title, unreconciled cap tables, missing board consents, and stale 409A valuations most often derail a venture round in diligence. Undisclosed litigation and unusual contract terms sit close behind, and surprises kill deals far more reliably than problems do. Disclose early in writing with your proposed fix attached, and treat nexus reviews, 1099 hygiene, and cap table reconciliation as ongoing accounting work, which is what indinero handles between raises.

How far in advance should a startup get diligence-ready?

Get ready for fundraising due diligence before your first pitch meeting, because most of the data room can be assembled before a term sheet exists. Move to accrual basis with a monthly close inside 10 business days, reconcile the cap table to signed documents, chase every invention assignment, and run a sales tax nexus study. None of that work expires, and the accounting and tax half of it is what indinero maintains year-round for growth-stage clients.