Knowing how to get startup funding means understanding that the fundraising process changes at every stage. What works for a pre-seed raise will not work for a Series A. The investors are different, the expectations are different, and the materials you need are different.
This guide maps the entire funding journey from the first dollar to growth-stage capital, with clear guidance on what each stage requires and how to prepare.
The Funding Stages
Startup funding follows a sequence that maps to the startup lifecycle. Each round corresponds to a phase of company development:
According to Carta, pre-seed rounds skew small, with deals under $250K making up 44% of all pre-priced rounds in Q4 2024.1 For seed and Series A, Carta reported a median seed round of roughly $2.5M and a median Series A round near $12M in 2024.2
This guide focuses on Pre-seed through Series A, which is where the majority of founders are actively fundraising.
Pre-Seed: The First Capital
Pre-seed funding gets you from idea to prototype. The capital comes from sources that bet on people, not products.
Personal savings and bootstrapping. Most startups begin with founder capital. The dollar amount matters less than what it signals: you believe in this enough to put your own money in first.
Friends and family. Keep these investments structured. Use a SAFE (Simple Agreement for Future Equity) or convertible note. Informal handshake deals cause problems when professional investors show up later.
Grants. Non-dilutive capital with no repayment requirement. Federal programs (SBIR, STTR), state economic development grants, and private foundation grants are all available at this stage. For nonprofits, the landscape is even broader, as covered in our guide to startup grants for nonprofits.
Microloans and CDFIs. For founders who need small amounts ($5K to $50K) and have reasonable personal credit. Our guide on startup business loans with no revenue covers these options in detail.
Angel investors. Individual investors who write checks from $5K to $250K. Angels evaluate the founder, the market, and the problem more than the product. At pre-seed, the product may not exist yet.
What investors expect at pre-seed: A compelling problem statement, a founding team with relevant experience or deep conviction, and early evidence of demand (customer conversations, waitlist signups, LOIs).
Seed: Building the Product
Seed funding gets you from prototype to product-market fit. The capital supports development, early hiring, and initial customer acquisition.
Micro VCs and seed funds. Firms like Precursor Ventures, Hustle Fund, and Uncork Capital specialize in seed-stage investments. Check sizes typically range from $250K to $1M.
Angel syndicates. Groups of angels who pool capital through platforms like AngelList. Syndicate leads curate deals and individual angels participate.
Accelerators. Programs like Y Combinator, Techstars, and MassChallenge provide seed capital alongside mentorship and network access. Our list of the best startup accelerators covers the top programs and their terms.
What investors expect at seed: A working product (or advanced prototype), initial user feedback, a clear business model hypothesis, and a founding team that can execute. A strong pitch deck is required.
Series A: Proving the Model
Series A funding scales a company that has demonstrated product-market fit and repeatable customer acquisition. This is where venture capital firms make larger bets.
Venture capital firms. Series A rounds are led by institutional VCs. Firms like Sequoia, a16z, Benchmark, and hundreds of sector-specific funds evaluate deal flow at this stage.
What investors expect at Series A:
- Revenue traction. Reported benchmarks vary widely by source and industry, but data shared at SaaStr 2024 by 20VC and La Famiglia put the median ARR for B2B SaaS startups raising Series A at around $3M.3 Many companies raise with less; treat any single number as directional.
- Growth rate. According to Lenny Rachitsky's newsletter, 10% month-over-month growth is considered "good" and 15%+ "great" for early-stage startups raising venture capital.4
- Unit economics. According to Bessemer Venture Partners, high-performing SaaS companies target an LTV to CAC ratio of 3:1 or better.5 Bessemer's portfolio analysis also shows that software companies scaling to $10M in ARR typically run gross margins of roughly 60% at the bottom quartile and 70% at the median.6
- Market proof. Evidence that the market is large enough to support a venture-scale outcome ($1B+ TAM).
- Team. A leadership team capable of managing the next stage of growth.
Your pitch deck at Series A looks nothing like a seed deck. Traction data, financial projections, and go-to-market metrics dominate the slides. The story shifts from "this could work" to "this is working, and here is why it scales."
Alternative Funding Sources
Not every startup follows the traditional VC path. Alternative capital sources work well for specific situations:
Revenue-based financing. Platforms like Clearco and Pipe provide capital based on recurring revenue. No equity dilution, but requires existing revenue.
Equity crowdfunding. Regulation CF allows companies to raise up to $5M from everyday investors. The compliance requirements are significant, but the community-building effect is real.
Government programs. SBA loans, state economic development grants, and federal innovation programs provide non-dilutive or low-cost capital at various stages.
Corporate venture and strategic partners. Large companies invest in startups that align with their strategic interests. The capital often comes with partnership opportunities, distribution access, or pilot programs.
How to Prepare for Any Raise
Regardless of the stage, preparation follows the same core steps:
Know your numbers. Revenue, burn rate, runway, CAC, LTV, churn, growth rate. Investors will ask, and hesitation on any of these signals that you are not close enough to the business. Have clean, current data ready.
Build your pitch materials early. A pitch deck is required at every stage. Study real examples and build yours using the slide-by-slide template. Then build your investor list. Research firms that invest at your stage, in your industry, at your check size. Cold emails to the wrong investor waste everyone's time.
Practice the pitch. You will pitch dozens of times. The first few will be rough. Practice with advisors, other founders, and mentors before you pitch the investors you care most about. And set a timeline. According to DocSend's Seed Fundraising Report, seed founders in 2023 contacted more investors and held more meetings than in prior years, with the average raise stretching across multiple months.7 Plan for several months of active process, set a target close date, and work backward. Running a process with multiple investors in parallel creates competitive pressure.
Match Your Stage to the Right Capital
The Founders platform on Startup Science surfaces grants, investors, accelerators, and funding programs matched to your current lifecycle phase. Instead of manually researching hundreds of options, the platform filters to the opportunities that match your stage, industry, and geography.
Capital strategy is a sequence, not a menu. The right funding source at the wrong time costs you equity, time, or both. Start with where you are, not where you want to be.
Frequently Asked Questions
How long does it take to raise a seed round?
Most seed rounds take 3 to 6 months from first investor meeting to close. Some close faster with warm introductions or accelerator demo day momentum. Plan for 6 months to be safe.
How much equity should I give up in a seed round?
According to Carta, median dilution at Series A was around 20.5% in Q1 2024, with seed rounds clustering near 20% as well.8 A typical working range is roughly 15% to 25% per round. Giving up more than 25% in a single round makes future fundraising harder because subsequent investors need room to build their position.
Do I need revenue to raise a seed round?
Not always. Many seed-stage companies are pre-revenue. What you need is evidence of product-market fit: user engagement, waitlist growth, pilot results, or letters of intent. Revenue accelerates the process but is not required.
What is the difference between a SAFE and a convertible note?
A SAFE (Simple Agreement for Future Equity) converts to equity at the next priced round with no interest or maturity date. A convertible note is a loan that converts to equity, with interest and a maturity date. SAFEs are simpler and more founder-friendly.
Should I raise money or bootstrap?
It depends on your growth goals and market dynamics. Bootstrapping preserves ownership and forces discipline. Raising capital accelerates growth and provides a competitive moat in winner-take-most markets. Neither is universally better.
Sources
- Peter Walker / Carta, State of Pre-Seed: 2024 in review, 2024. carta.com
- Peter Walker / Carta, State of Private Markets: Q4 and 2024 in review, 2025. carta.com
- Kyle Poyar / Growth Unhinged, Your guide to the 2024 SaaS benchmarks, 2024. growthunhinged.com
- Lenny Rachitsky, What is a good growth rate?, 2022. lennysnewsletter.com
- Bessemer Venture Partners, State of the Cloud 2023, 2023. bvp.com
- Bessemer Venture Partners, The Good, Better, Best of Cloud KPIs, 2022. bvp.com
- Justin Izzo / DocSend, Seed fundraising in 2023, 2023. docsend.com
- Peter Walker / Carta, Dilution is on the decline, 2024. carta.com
