How much should I raise in a Series A?

Raise enough to reach the milestones that make a Series B straightforward, usually 18–24 months of runway plus a buffer for a slower plan. Work backward from the hiring plan and burn in your model, not from what peers raised. Raising too little sends you back to market early; raising too much raises the bar for the next round.

What dilution should I expect at Series A?

Carta's software data for the six months to July 2026 shows median Series A dilution of about 18%, as summarized by Waveup. On top of that, investors often ask for the option pool to be topped up before the round, which dilutes existing holders further. Model both together so you know your real post-round ownership.

How long does a Series A take?

Plan on roughly six to eight weeks of preparation, then three to four months from first partner meetings to money in the bank. Processes run faster for companies with strong momentum and slower for everyone else. Start when you still have at least 12 months of runway so you never negotiate from a cash deadline.

Do I need an investment banker for a Series A?

Usually not. Series A investors expect to deal directly with the founders, and the round is small relative to a banker's fee model. Experienced startup counsel and a finance lead who can build the model, run the data room and answer diligence questions add more value at this stage.

What if I do not have product-market fit yet?

Then a Series A is premature. Investors will test retention and sales repeatability in diligence, and weak signals end the process. Consider a seed extension or bridge, cut burn to extend runway, and focus on retention and a repeatable customer profile before going out again. A failed round makes the next attempt harder.

Series A Fundraising: What Investors Want to See

Who this guide is for

This guide is for founders who have raised a seed round, have real revenue, and are deciding whether and when to raise a Series A. The seed round was about belief. The Series A is about evidence. Below is what the market looks like in 2026, what investors test, what to prepare, and a checklist to tell you whether you are ready.

What Series A really means in 2026

A Series A is usually your first priced round led by an institutional venture fund. It signals that the company has moved past proof of concept into a business that can scale with more capital.

The 2026 market is expensive and split. According to the PitchBook-NVCA Venture Monitor, the median US Series A pre-money valuation reached $62m in Q1 2026, nearly triple the $21m recorded in 2020, and the median deal size rose to $19.6m from $7.5m. The average deal was $39.6m, far above the median, because a few very large rounds pull it up. Half of all early-stage deals now exceed $10m.

The split is mostly about AI. The same report puts the median Series A pre-money at $78.0m for AI companies and $42.4m for non-AI companies, and shows AI companies moving between rounds faster: a median of 1.3 years between VC rounds in 2026, against 1.8 years for non-AI companies.

US Series A, Q1 2026	Figure	Source
Median deal size	$19.6m	PitchBook-NVCA
Average deal size	$39.6m	PitchBook-NVCA
Median pre-money valuation	$62m	PitchBook-NVCA
Median pre-money, AI vs non-AI	$78.0m vs $42.4m	PitchBook-NVCA
Median software round (6 months to July 2026)	$14.4m raised at $80m post-money	Carta, via Waveup
Median software dilution (same period)	About 18%	Carta, via Waveup

Data sets disagree because they cover different samples, so treat these as ranges, not targets. A solid B2B software company without an AI angle should benchmark against the non-AI and software figures, not the headline median. These figures are US-only; if you are raising in Europe, benchmark against regional data.

Series A vs. seed: the real difference

Seed investors back founders and a market. Series A investors back a business with measurable traction.

Dimension	Seed	Series A
What is being tested	Team, insight, market	Retention, repeatable sales, unit economics
Revenue evidence	Early customers, design partners	Recurring revenue with a clear growth trend
Sales	Founder-led	A process that works without the founder on every deal
Diligence	Light	Financial, commercial, legal and technical
Financial reporting	Bank and bookkeeping	Monthly accounts, cohort data, a credible model

What investors really want to see

Behind every term sheet are three questions. Is this a real, large market? Is this the team that will win it? Can the fund underwrite a large return from this entry price? Everything in your deck and data room should answer those three with evidence.

1. Product-market fit with proof

"Customers love us" is not proof. Investors look for retention cohorts that flatten rather than decay, net revenue retention that shows customers expand, organic or referral demand, and sales cycles that shorten over time. A product-market-fit survey (asking users how disappointed they would be without the product) helps as supporting evidence, not as a replacement for retention data.

2. A repeatable go-to-market motion

Can the company grow without the founder closing every deal? Investors look for a defined ideal customer profile, a written sales process, at least one salesperson other than the founder who closes consistently, and conversion rates that hold steady across quarters.

3. Unit economics that justify scaling

The new money will mostly go into acquiring customers. Investors want to see that each customer returns more than it costs, within a reasonable time. Our guide to the LTV:CAC ratio explains how to calculate it honestly, including the gross margin adjustment many founders skip.

4. A believable path to a large outcome

Funds price your company on what it could become in five to seven years. Your financial model has to show how today's revenue becomes a much larger business through specific levers: new segments, geographies, products or pricing. "Huge market" claims without a bottom-up build do not survive diligence.

5. A team that can execute

Investors want complementary founders, a plan for the first senior hires, and evidence that you can recruit. Reference calls on the founders usually start soon after a partner gets interested.

The metrics that matter

Every Series A conversation turns on a handful of numbers. Know them cold, know the drivers behind them, and make sure they reconcile to your accounts. The ranges below are the working rules of thumb we use for B2B SaaS when pressure-testing readiness. They are not market statistics, and investors in AI or vertical software may weigh growth and efficiency differently.

Metric	What investors read from it	Our working range for B2B SaaS
ARR and growth	Demand and momentum	Low single-digit millions, growing well over 2x a year
Gross revenue retention	Product stickiness	85–90%+
Net revenue retention	Expansion within the base	Above 100%, ideally 110%+
Gross margin	Quality of revenue	70%+ for software
CAC payback	Speed of return on sales spend	Under 18–24 months
Burn multiple (net burn ÷ net new ARR)	Capital efficiency	Under 2x
Customer concentration	Revenue risk	No single customer above about 15–20%

For definitions and how to calculate each one, see our guide to SaaS financial metrics.

Building a bulletproof data room

The data room decides whether interest turns into a closed round. A messy one signals a messy company; a clean one shortens diligence. Build it before the first meeting.

Corporate: cap table, incorporation documents, board minutes, shareholder agreements
Financials: 24 months of monthly P&L, balance sheet and cash flow, receivables and payables aging, reconciled to the bank
Revenue analytics: cohort retention table, ARR bridge (new, expansion, contraction, churn), customer concentration, contract value trends
Sales and marketing: pipeline by stage, CAC by channel, payback, win/loss analysis
Product and technology: roadmap, architecture overview, security posture
Customers: contracts for the largest accounts, references willing to take a call
Legal: material contracts, IP assignments, employment agreements, any disputes
Model: three-year financial model, monthly for the first 18–24 months, with the use of funds

Our board reporting pack template covers the monthly reporting investors will expect after the round, and it is worth having it running before you raise.

The Series A pitch deck structure

The deck earns the meeting; the data and conversations close the round. Most strong Series A decks run 12–16 slides.

Title: company, one-line description, headline traction
Problem: who has it and what it costs them
Solution: the product in one sentence and one screen
Why now: the shift that makes this possible today
Traction: revenue, growth, logos, retention curve
Business model: pricing, contract terms, unit economics
Go-to-market: channels, CAC by channel, sales motion
Market: bottom-up market sizing
Competition: an honest map and your defensible angle
Team: founders and key hires
Financials: history and a three-year summary
The ask: amount, use of funds, milestones to the next round

Two slides that lose credibility fast: a hockey-stick projection with no drivers behind it, and a competition slide that claims you have no competitors.

The fundraising process: timeline and tactics

A well-run process takes three to six months from the start of preparation to cash. These phases are typical in our experience; momentum companies move faster.

Phase	Typical duration	Key activities
Preparation	6–8 weeks	Deck, data room, model, target list, warm introductions
First meetings	2–4 weeks	Partner meetings, run in a tight window
Deep dives	2–3 weeks	Partner meetings, customer calls, model review
Term sheet	1–2 weeks	Negotiation of headline terms
Diligence and close	4–6 weeks	Confirmatory diligence, legal documents, funds wired

Run a compressed process

Competitive tension is your main source of leverage. Schedule first meetings within about two weeks, tell investors your timeline, and move second meetings together. A process that drags signals that nobody is leading.

Target the right investors

Build a list of funds that have led Series A rounds in your category recently, and find the specific partner who covers your space. Warm introductions from founders in their portfolio usually beat cold outreach.

Top mistakes that kill Series A rounds

Raising too early. Investors talk. A failed round at weak metrics makes the next attempt harder. Wait until the numbers hold for at least a full quarter.
Founder dependency. If only the founder can sell, recruit or fix the core system, the business does not yet scale.
Customer concentration. One customer at a large share of revenue is a risk investors will price in or walk away from.
Numbers that do not tie. Investors rebuild your metrics from the raw data. If their ARR does not match yours, trust goes quickly. An independent model review before you go out is cheap insurance.
Negotiating terms alone. Liquidation preferences, anti-dilution, board seats and the option pool decide what you keep. Use experienced counsel.
Anchoring valuation badly. Too high stalls the process; too low gives away ownership. Use recent rounds in your category and stage, not the headline median.
Running out of time. Rounds slip. Start with at least 12 months of runway so a delay does not become a crisis.

The Series A readiness checklist

Every "no" below is a reason to fix something first.

Metrics

Recurring revenue with a clear, sustained growth trend
Retention cohorts that flatten, and net revenue retention above 100%
Gross margin in line with your category
CAC payback you can defend by channel
At least 12 months of runway at current burn

Operations

Monthly close completed within about 10 business days
Clean cap table with every grant documented
Contracts for the largest customers signed and stored centrally
At least one senior hire outside the founders
A documented sales process with a closer other than the founder

Materials

Deck (12–16 slides) led by traction
Data room covering all eight areas above
Three-year model, monthly for the first 18–24 months
Customer references identified and briefed
Target list of funds with named partners and introduction paths

Team and governance

Founders aligned on dilution, board composition and use of funds
Experienced startup counsel engaged
A finance lead or fractional CFO to run diligence responses
Board ready to support the process

How we use this with clients

Ideally we start working with founders six to nine months before a Series A. The first job is a diagnostic: rebuild the key metrics from the accounting and billing data, the way an investor's analyst will, and see whether they match what the founder has been reporting. They often differ, usually on ARR definitions, churn timing or how gross margin treats hosting and support costs. Fixing that before diligence is far cheaper than explaining it during diligence.

Then we look at three things. Unit economics: CAC payback and LTV:CAC by channel, with gross margin applied, so the plan for the new money rests on numbers that hold. Cash: runway under a slower-than-planned close, and how much to raise to reach Series B milestones with a buffer. Reporting: a monthly investor-grade pack and data room that stay current, so diligence is a download, not a project.

During the round we build and defend the model, prepare the data room, and answer financial diligence questions so the founders can focus on investors. Across our work we have helped clients raise more than €40m. Our fundraising support page describes how the engagement works.

Next step

If you are six to twelve months from a Series A, now is the time to check that your numbers will survive diligence. Book a free CFO diagnostic call and we will tell you what investors are likely to question first.