How to raise seed funding for your startup

Seed funding is the first significant external capital a startup raises after bootstrapping or collecting small amounts from friends and family. It typically ranges from $500,000 to $5 million, though competitive sectors push higher. The money funds product development, initial hiring, and early go-to-market efforts. If you're still deciding whether you're pre-seed or seed, this breakdown of how the two funding stages differ is worth reading first. The distinction comes down to traction, team, and whether you have a product gaining measurable momentum.

This stage matters because it determines your runway and your leverage. A well-structured seed round gives you 18 to 24 months to hit the milestones that will attract Series A investors. Your seed round also sets the valuation baseline for every future raise, making the terms you accept now carry consequences for years. But before getting into the mechanics, there's an important context shift that changes how you should read the rest of this guide.

Most seed funding guides are written as if all seed rounds work the same way. That hasn't been true for a while, and understanding the split matters before you start building your investor list.

On one end, AI-focused startups commanded 42% of all global seed dollars in 2025, up from 30% the year before. Investors at the top of the market moved faster, wrote bigger checks, and cared less about traditional traction metrics when the founder had the right pedigree or a model already showing early product-market fit. On the other end, among U.S. seed rounds tracked by Crunchbase, smaller rounds between $200,000 and $5 million fell from 70% of all seed dollars in 2018 to just 26% in 2025. That doesn't mean those rounds aren't happening. It means the capital concentration has shifted upward and founders raising in that range face more competition for fewer available dollars.

Your strategy depends on which tier applies to you. If you're building an AI company with strong early traction, you may command a higher valuation than this guide's benchmarks suggest. If you're building outside AI, in SaaS, commerce, fintech, or hardware, the traditional playbook still applies but expect tighter due diligence, more conservative valuations, and longer timelines than founders in the AI bracket see.

The startup fundraising process follows a predictable sequence, even when individual outcomes vary wildly. Breaking it into discrete steps helps you focus on what matters at each phase.

Step 1. Calculate your target raise amount

Start with the number, not the investors. Map out your business startup costs for the next 18 to 24 months, including salaries, infrastructure, marketing spend, and a buffer for unexpected expenses. Most founders underestimate by 20 to 30 percent. Add that cushion to your baseline.

Your target should give you enough runway to hit clear milestones that make you Series A ready. The ARR threshold that Series A investors expect has risen significantly. Carta-tracked investors cited benchmarks ranging from $1 million to $5 million or more in ARR depending on sector, growth rate, and market conditions, so define your specific milestone with your target investors in mind rather than assuming a fixed number. Hardware companies need working prototypes and manufacturing partnerships. Define your milestone first, then work backward to the funding amount. Knowing your startup burn rate before you start modeling will make this calculation more accurate.

Step 2. Build your investor list

Create a tiered list of 80 to 100 potential investors. Your first tier includes investors who have funded companies in your space at your stage. Your second tier covers investors who match on stage but not sector. Your third tier serves as backup volume.

Research each investor's recent deals, check sizes, and stated thesis areas. Reaching out to an investor who only writes $5 million checks when you're raising $1 million wastes everyone's time. Use LinkedIn, Crunchbase, and your network to find warm introductions wherever possible.

Step 3. Prepare your materials

You need a pitch deck, a financial model, and a data room. Your deck should run 10 to 15 slides covering problem, solution, market size, business model, traction, team, and ask. Your financial model should show three years of projections with clear assumptions. Your data room holds everything an investor will request during due diligence.

Practice your pitch until you can deliver it in 3 minutes, 10 minutes, or 30 minutes. The 3-minute version matters most because most initial conversations happen quickly.

Step 4. Run a parallel process

Contact your top 20 investors within the same two-week window. Running parallel conversations creates natural urgency and gives you leverage when term sheets arrive. Staggering your outreach lets investors wait each other out.

Track every conversation in a CRM or spreadsheet. Note the date of each interaction, the next step, and any concerns raised. Follow up within 48 hours of every meeting. Momentum matters more than perfection.

Step 5. Negotiate terms carefully

When term sheets arrive, focus on valuation, liquidation preferences, board composition, and pro-rata rights. Valuation gets the most attention, but the other terms can matter more in a downside scenario. A higher valuation with aggressive liquidation preferences can leave founders with less than a lower valuation with clean terms.

Get a startup-focused attorney to review every document. The $5,000 to $15,000 in legal fees pays for itself many times over. Good legal counsel catches issues you won't see.

Valuation is the term sheet line that gets the most attention, but most founders approach it backwards. They pick a number that feels ambitious and defend it. The better approach is to anchor to market data and build from there.

Start by researching post-money valuations for comparable seed-stage companies in your sector and geography. Crunchbase, AngelList, and Carta's public benchmarking data are all useful starting points. Once you have a sample of five to ten comparable rounds, target the mean or up to 25% above it if your traction metrics justify it. "25% above the mean" isn't arbitrary; it's a negotiating position you can defend with data.

A few factors adjust the baseline meaningfully. First-time founders at the same traction level typically command lower valuations than repeat founders. Bay Area rounds run higher than comparable rounds in most other markets. AI companies receive a structural premium right now that may not persist, so price your expectations accordingly.

Not all capital is equal. Different sources bring different expectations, timelines, and non-financial value, and mixing them strategically is often how the best seed rounds get built. Most successful seed rounds combine multiple sources. A typical structure pairs a VC lead with angel follow-on participation, using non-dilutive grants to extend runway without additional equity sacrifice.

Angel investors

Angels move faster than institutions, take more concentrated risk, and often bring networks that matter more than their check. Our guide on finding angel investors covers how to source them, approach them, and stand out.

Venture capital firms

Venture capital firms pool money from institutional investors and deploy it across portfolios of startups. Seed-stage VC funds typically write checks between $500,000 and $2 million. They bring pattern recognition from seeing hundreds of companies, connections to future investors, and hands-on operational support.

The tradeoff involves higher expectations and more formal governance. VCs need portfolio companies to swing for significant outcomes because their fund economics require big wins. A company targeting $20 million in annual revenue is often a great business but a poor VC investment. VCs also move slowly relative to angels, with 6 to 12 weeks from first meeting to term sheet.

Top-tier seed VCs are now making decisions faster for companies they want. They've moved from slow diligence to high-conviction calls based on distribution, retention, and founder instinct. If a fund is interested, you'll know quickly. If you're three weeks in and still getting vague follow-up, that's a signal too. A VC seed round often includes board representation. That accountability cuts both ways. Make sure your working style aligns with any investor who will have a seat at the table.

Accelerators

Accelerator programs provide capital, mentorship, and cohort-based support in exchange for equity. Y Combinator's current deal is $125,000 for 7 percent equity plus a $375,000 uncapped MFN SAFE. Techstars updated its terms in April 2025 to $20,000 for 5 percent common equity plus a $200,000 uncapped MFN SAFE. Both structures split the investment across two instruments, so the total capital is larger than the headline equity check suggests.

The real value extends far past the check. Top accelerators provide access to investor networks that would otherwise take years to build. Demo day events put you in front of hundreds of potential investors in a single afternoon. The equity cost runs higher per dollar than other sources. You're paying for the programming and access, not just the capital. This makes sense for first-time founders without existing investor relationships.

Crowdfunding platforms

Equity crowdfunding lets you raise capital from large numbers of non-accredited investors through SEC-regulated platforms. Regulation Crowdfunding allows raises up to $5 million annually. Companies like Republic and Wefunder facilitate these campaigns, handling compliance and investor management.

Crowdfunding works well for consumer products with built-in audiences. Your customers become investors, which deepens their loyalty and creates built-in marketing. In one representative example, a direct-to-consumer food brand raised $1.2 million from 800 backers who then became repeat customers.

Campaigns require significant marketing effort. You'll spend weeks driving traffic to your raise page. Managing hundreds of small investors creates administrative overhead, even with platform support. Traditional VCs sometimes view crowdfunded companies with skepticism.

Government grants

Federal and state governments offer non-dilutive funding for startups in specific sectors, particularly deep tech, biotech, defense, and energy. The Small Business Innovation Research program (SBIR) is the most common entry point, but check current solicitations for award amounts rather than relying on published caps. The program lapsed after September 2025 and was reauthorized in April 2026, and published figures have not been fully harmonized across official pages. The SBA provides detailed guidance on eligibility and application processes.

The main advantage is non-dilutive capital. Winning a competitive federal award also signals technical credibility to follow-on investors in a way that's hard to manufacture otherwise.

The application process demands significant time investment. SBIR applications often run 25 to 50 pages and require detailed technical and commercial plans. Review cycles take 4 to 6 months. Grant funding works best as a complement to other capital, not a primary strategy.

Revenue-based financing

Revenue-based financing provides capital in exchange for a percentage of future revenue until a repayment cap is reached. Typical terms across providers involve repaying 1.1 to 1.5 times the principal over 12 to 24 months. This option suits companies with predictable revenue who want to avoid dilution. A SaaS company with $50,000 in monthly recurring revenue can access $500,000 in growth capital while keeping full ownership. The cost of capital exceeds traditional debt but involves no equity sacrifice.

Revenue-based financing doesn't work for pre-revenue companies. You need consistent income to qualify and repay. The ongoing revenue share also reduces cash available for other expenses, which can constrain growth in capital-intensive periods. Explore business lines of credit for startups for additional non-dilutive options.

How much to raise, from whom, and on what terms are decisions you can get technically right and still get wrong if you haven’t thought clearly about your own situation. These three factors tend to matter most.

Your tolerance for dilution

Every dollar of equity funding costs ownership. The question isn't whether dilution is bad. It's whether the capital fuels enough growth to make your smaller percentage more valuable in absolute terms. A founder who owns 60 percent of a $10 million company has less than one who owns 40 percent of a $50 million company. Understanding startup equity compensation helps you structure deals that keep everyone aligned.

Some founders prioritize control and accept slower growth to preserve equity. Others prioritize speed and accept more dilution to capture market windows. Neither approach is wrong, but your answer should be intentional rather than reactive.

The non-financial support you need

Money is the baseline. What else do you need? A first-time founder benefits enormously from experienced board members who have built companies in your industry before. A serial entrepreneur with deep networks often prefers passive investors who won't add meetings to the calendar. Consider whether you need introductions to enterprise customers, technical advisors, or recruiting help. Different funding sources deliver different types of support, and matching your needs to the investor profile matters as much as the check size.

Market timing and competitive pressure

Some markets reward fast movers with lasting advantages. Others favor patient builders who wait for technology or regulation to mature. If three well-funded competitors are racing toward the same opportunity, underfunding means losing. If you're building in an emerging category with room for multiple winners, capital efficiency matters more than speed. That decision also interacts with which tier of the current market you're in. Analyze your startup growth strategies before deciding on funding pace.

Solo founders can raise seed rounds, but the odds are materially lower than most guides suggest. That's not a reason to give up. The core investor concern isn't really about being solo. It's about whether you can recruit. Investors backing a single founder are betting that person can attract the engineers, operators, and executives the company will need. They want to know why there's no co-founder, and what that signals about your ability to bring people in.

The most effective counter to that concern is to show evidence of recruiting ability before you're in the room. If you have advisors with strong credentials, team members ready to join post-funding, or a track record of building teams at previous companies, make that visible. Some founders go further and bring on a committed co-founder after the round closes, establishing the agreement in advance. That approach can work, but investors will want to see the arrangement formalized.

Traction matters more for solo founders than for teams. Strong retention numbers, paying customers, or a fast-growing waitlist reduce the team risk question significantly. If the product is working, the lone-founder concern shrinks. If you're pre-traction, the bar is higher.

Understanding the mechanics of a raise is only half the job. These are the mistakes that derail founders who have the right product and the right investors lined up but still get it wrong.

Raising too little to reach the next milestone

Founders often underestimate costs and overestimate progress. They raise 12 months of runway when they need 18. The result is a bridge round from a position of weakness or a fire sale when cash runs low. This mistake destroys more startups than bad products.

Add 30 percent to your initial budget estimate. Build your financial model with conservative revenue assumptions and realistic hiring timelines. Identify the specific metrics you need to hit for Series A eligibility and work backward to the required runway. Create a startup budget that accounts for delays and unexpected expenses, and review it monthly against actuals.

Optimizing for valuation over terms

A high valuation feels like validation. But valuation is one line in a term sheet full of provisions that matter more in a downside scenario. Aggressive liquidation preferences, participating preferred structures, and restrictive covenants can all leave founders with less than a cleaner deal at a lower number would have.

Understand every term before you sign. Ask your attorney to walk through the downside scenarios for each provision. A clean $8 million valuation often beats a messy $12 million when you account for all the terms.

Taking money from misaligned investors

Not every check is worth cashing. Investors who need quick returns, expect unrealistic growth rates, or want control that doesn't match their ownership stake create ongoing friction. These relationships sour faster than founders expect. Reference check every investor before you close. Talk to founders of their portfolio companies, including the ones that struggled. Ask specifically about how the investor behaved when things went wrong.

Neglecting financial infrastructure

Founders focus on fundraising and then forget to build systems for managing the money they raised. Set up dedicated business banking, expense management, and accounting processes before the wire hits your account. Know how to track business expenses from day one. Cash flow problems, missed payments, and compliance gaps erode investor confidence fast.

Missing milestones after raising

Higher seed valuations mean less margin for error. Investors who wrote a check at a $15 million post-money valuation may expect a Series A at $40 to $60 million. Miss your milestones and the next round gets harder, not just because you need more traction but because your cap table creates a math problem for new investors.

Raise for the milestones you can actually hit, not the ones that sound most impressive. Being conservative in what you promise and then overdelivering is a far better position than raising on an aggressive growth story and coming up short. Investors have longer memories than founders sometimes expect.

Monthly financial reviews

Schedule a recurring monthly session to review actual spending against your budget. Compare burn rate to projections and identify categories running over or under plan. Unmanaged cash flow catches up with startups faster than most founders expect. Track runway remaining as a primary metric. Your target should stay above 12 months until you're actively raising your next round. When it drops below 9 months, treat it as an emergency.

Spending approval workflows

Create clear thresholds for spending authority. Individual contributors can approve purchases under $500, while managers can handle up to $5,000. Anything larger can be set to require founder sign-off. Document your spending policies in a corporate credit card policy that everyone on your team understands.

Cash reserve management

Keep 2 to 3 months of operating expenses in a separate, higher-earning account from your operating funds. This buffer protects against timing mismatches between payables and receivables. A business sweep account can automate this separation. Track your cash position weekly at minimum. Daily visibility is better during high-burn periods.

Investor reporting cadence

Send monthly updates to your investors even when they don't ask for them. Include key metrics, wins, challenges, and specific asks for help. This builds trust and keeps your investors engaged as partners rather than passive observers.

Your update should take 30 minutes to write and 5 minutes to read. Consistency matters more than polish. Investors who feel informed are more likely to help when you need support.

The operational side of managing a seed round is easy to underestimate. These are the tools that help you maintain control and visibility from the day the money lands.

Corporate cards without personal guarantees

Many traditional business credit cards require founders to personally guarantee the balance, putting personal assets at risk for company expenses. Brex offers corporate charge cards with no personal guarantee, using your company's cash balance and financial profile to set limits instead. Knowing how corporate credit cards work can help you select the right solution for your team.

Automated expense tracking

Manual expense reports waste hours every month. With real-time spend tracking, every transaction automatically categorizes and appears in your dashboard immediately. You see where money goes without chasing receipts or waiting for credit card statements. This visibility helps you catch budget overruns before they compound.

Integrated bill pay

Paying vendors through multiple systems creates reconciliation headaches and fraud risk. Integrated bill pay within the Brex platform lets you manage invoices, approvals, and payments in one place.

Virtual cards for controlled spending

Software subscriptions, contractor payments, and marketing spend often need separate cards with specific limits. Virtual cards let you create unlimited card numbers with custom spending controls. Set per-transaction limits, restrict merchant categories, and cancel instantly if a number gets compromised. Many seed-stage companies benefit from accounting software for startups that connects seamlessly with their financial tools.

This article reflects Brex's perspective at the time of publication and is intended for general informational purposes, not professional advice. For guidance specific to your business, please consult a qualified professional. Information may change over time.