How to Decide How Much to Raise

The number that founders fixate on first is how much cash to raise. They see a round size on TechCrunch and assume that is what they need. They pick a number that sounds big enough to buy a year of not fundraising, or they pick the cap that keeps dilution under a round number because a spreadsheet once said 20 percent is safe.

The problem: a raise target that doesn't tie back to the company's own next milestones is a bet you don't need to take. Raise too little and you run out of cash before you can show the progress required for the next round. Raise too much and you sell extra equity for capital you don't have a use for, often at a valuation that looks generous only until the board asks what you did with the money.

Deciding how much to raise is a calculation, not a guess. It's a function of the milestones you must reach to unlock the next financing, the cost of reaching them, the time you'll need, and the ownership you're willing to part with. The final number comes with tradeoffs, but the process is straightforward.

This guide walks you through sizing a round to your next milestones, step by step. You'll learn to build a raise amount from the ground up instead of pulling a number from a blog post. By the end, you'll have a repeatable method that sharpens every investor conversation.

Prerequisites

Before you start calculating, have these three things ready.

• A clear picture of your current burn rate. If you don't know how much cash leaves the business every month, stop and get that number. Capitaly's glossary defines burn rate and why it matters. Track it monthly so you aren't guessing when an investor asks.
• A financial model or bottoms-up budget. You don't need a 60-tab spreadsheet, but you do need a month-by-month forecast of headcount, marketing spend, software, and other operating costs to reach each milestone. Use Capitaly's free fundraising calculators to stress-test assumptions and see how your runway changes under different raise amounts.
• An honest read on your fundraise stage. Are you pre-seed trying to get to product-market fit, seed trying to hit a growth inflection, or Series A proving a scalable go-to-market? The milestones differ sharply. Check Capitaly's use case pages for how founders structure pre-seed, seed, and Series A raises.

With those in hand, you can run the five steps below.

Step 1: Define the milestones that will de-risk the next round

Investors underwrite the next round based on what you achieve with this one. So start by listing exactly what would make a Series A lead (or seed lead, or growth lead) say yes 18 to 24 months from now. These are your primary milestones.

For a pre-seed company, that might be a shipped MVP, 15 paying design partners, and a growth rate that shows retention. For seed, it could be $1M ARR, a CAC payback under 9 months, and a repeatable outbound motion. For Series A, it might be $3M ARR, net revenue retention above 110%, and a clear path to $10M.

Be specific. Do not write "product-market fit." Write the measurable signal: monthly retention above 80%, NPS over 50, referrals driving 30% of new customers. Investors will check these numbers in diligence, so define them now.

Pro Tip: Write the milestones in the language you'd use in an investor update. That forces you to disambiguate. "Growing fast" becomes "monthly revenue grew 20% month-over-month, and pipeline coverage is 3x for the next quarter." Use Capitaly's free investor update templates to get the format right.

When you have the list, pressure-test it with a friendly existing investor or advisor. Ask: "If we hit these exact numbers in 20 months, would you personally introduce us to a Series A fund?" If the answer isn't an immediate yes, sharpen the milestones.

Step 2: Price the cost of reaching each milestone

Now translate milestones into dollars. Start with headcount, because it will be your largest line item.

Headcount costs. List every hire you need by quarter - engineers, sales, marketing, customer success - and attach a fully loaded cost (salary, benefits, taxes, equity, tooling). The Bureau of Labor Statistics publishes weekly and hourly earnings data that can ground your compensation estimates in market benchmarks. If you are raising a seed round and hiring five engineers in a competitive market, use real offer data, not aspirational salaries. Overbudget slightly on headcount; hiring always takes longer and costs more than your model predicts.

Non-headcount costs. Include marketing spend (paid ads, content, events), software subscriptions, office space (if any), legal and compliance, travel, and a contingency line (at least 10 percent of total opex). The U.S. Small Business Administration's guide on pricing your products underscores a principle that applies here too: you must understand your underlying cost structure to set any financial target, whether it's product pricing or a raise amount.

Revenue offsets. If you're generating revenue, subtract it from your cash needs to get net burn. But be conservative. Assume your revenue grows slower than your hockey-stick projection. Factor in sales cycle delays, churn, and payment collection lags. The goal is to model a realistic case, not a best case. Founders often overestimate early revenue contributions and end up short on cash. Capitaly's runway definition page explains how to calculate how long your cash will actually last.

Build a monthly cash-out schedule. For each month, sum all cash outflows minus expected cash inflows. That gives you your net burn profile. This profile is the raw material for sizing the round.

Step 3: Determine the cash runway you need (and add a buffer)

The standard recommendation is 18 to 24 months of runway from the close date. Why? Because you need 12 to 15 months to execute against milestones, then you need 6 to 9 months to run a fundraising process without being forced to accept terms when the bank balance is low. If you start fundraising too late, the power shifts to the investor.

Take your cumulative net burn from the month-by-month schedule. Find the 24-month total. That's your baseline raise target. Then add a buffer: 15 to 20 percent more for things you didn't predict (longer sales cycles, a key hire you forgot, a lawsuit, a market downturn). If the baseline is $X, then raise $X multiplied by 1.15 or 1.2.

This is not padding; it's insurance. Investors respect a buffer when it's justified by specific risks. "We added 20 percent because we're entering a new market and customer acquisition costs are volatile" lands far better than "we raised $2M more because we wanted a nicer office."

Warning: Do not size the round to hit a specific viral milestone that requires everything to go perfectly. The IRS's estimated tax guidance reminds taxpayers to avoid underpayment penalties by estimating conservatively. The same discipline applies to fundraising: underestimate cash needs and you'll pay a steep penalty in a down round or a rushed process.

Run your numbers through Capitaly's calculators to see how different raise amounts affect runway and dilution. Then pick an amount that gives you at least 24 months of cash in the "base case" model and 18 months in a "slow" scenario.

Step 4: Factor in dilution and ownership goals

Now overlay the ownership math. The raise amount and the pre-money valuation determine the dilution. The formula: dilution percentage = investment amount / (pre-money valuation + investment amount).

But many founders approach this backwards. They start with an acceptable dilution (say, 20 percent) and work out the raise amount: raise = (dilution * target post-money) or something like that. That leads to arbitrary round sizes. Instead, first determine the cash required using Steps 1 through 3, then see if the resulting dilution is acceptable. If it's too high, you have a tension to resolve: find ways to reduce cost to milestone (a leaner plan) or go raise at a higher valuation by proving more progress before the round.

Most institutional seed rounds today trade 15 to 25 percent dilution for the round. Pre-seed may be higher. Series A often lands in the 15 to 20 percent range. If your numbers push dilution above 25 percent, it may signal that you are trying to raise too much relative to the valuation you can command. That's a candidate for a two-step raise: raise a smaller intermediate round (a "seed plus" or extension) to build valuation before raising the full amount.

Don't forget to model SAFE vs. priced round mechanics. A SAFE converts at the next round's pricing, so your dilution is unknown today. But you can estimate using a conservative cap. Capitaly's glossary page on capital raising terms explains all the instruments - SAFE, convertible note, priced seed - so you know what you're signing. Use Capitaly's calculators to compare SAFE conversion scenarios.

Pro Tip: The way you frame the raise amount in investor discussions can reduce the dilution focus. "We're raising $2.5M to get to $1M ARR with 24 months of runway" connects the number to a concrete outcome, which makes the valuation ask more defensible. Glassdoor's how to ask for a raise guide describes a similar principle for salary negotiation: tie the request to market value and performance evidence, not personal need. Same here: tie the raise amount to milestone cost and market proof, not to "we want 24 months of safety."

Step 5: Pressure-test with market norms and investor expectations

The private market has unwritten rules about round sizes by stage. While you aren't bound by them, ignoring them entirely can make your raise harder. A seed round that is $8M on a $40M cap in a sector where typical seeds are $2-4M will raise questions: why do you need that much? What milestones justify it? Conversely, a $500K seed in a capital-intensive vertical may signal you can't reach a meaningful inflection before running out of cash.

Check comparable rounds in your space. Don't rely on Crunchbase alone; those numbers are often misleading (post-money vs. investment, inclusion of secondary, etc.). Instead, talk to recently closed founders. Ask: How much did you raise? What months of runway did that give you? What milestones did you tie it to? The 10 AI startups most likely to raise in January 2026 analysis on Capitaly's blog shows how signals like hiring and product releases can indicate imminent raises, but the round size itself is always a function of milestones, not the other way around.

Use these benchmarks to sense-check your number. If your calculated raise is unusually high, be prepared with a detailed milestone map. HBR's article on how to ask for a raise advises employees to gather market data and articulate the value they've delivered; founders should do the same with milestone evidence. If your raise is low, consider whether you can aggressively scope down your plan without sacrificing the key proof points. Sometimes that's the right call, especially when valuations are compressed.

An investor might suggest a smaller round with a higher sense of urgency. Know when that advice is strategic and when it's a sign they want a lower price. If you've built your budget from the bottom up, you can push back with data: "Here is the cost of the milestones we've agreed are necessary, and here is the timeline. The $X amount is required." That confidence comes from doing the work in Steps 1-3.

Warning: Do not let an investor's desire for a particular ownership percentage drive the raise amount. Some angels have a minimum check size; some funds have a target ownership range. That's their constraint, not yours. Negotiate from your milestone plan, not their portfolio math. The APA's tips for asking for a raise highlight the importance of having a prepared, evidence-based case. Same here: present the data, stand firm on the plan.

Step 6: Document the plan and use it to run the raise

Now you have a raise amount derived from real math, not a blog post. Put it into a one-page summary that includes:

• The milestones you'll reach with this capital.
• The monthly budget to reach them.
• The expected runway (24 months with a 20 percent buffer).
• The target dilution range and pre-money valuation (if priced round).
• The bear case (if revenue or growth slows, we cut X and still achieve Y milestones with 18 months of cash).

This document is your internal anchor. Share a version of it with potential leads as part of your data room early in diligence. It demonstrates planning maturity. Use Capitaly's fundraising templates for a data room checklist and a raise timeline.

Sizing the round is the first concrete step in running a raise. Once you have the number, you need to find investors, manage outreach, and keep a diligence-ready data room. For a pre-seed raise, Capitaly's pre-seed raise page shows how to build an angel and early-stage fund list with AI-driven outreach. For seed, the seed raise page walks through a full investor CRM, tracked data room, and pipeline. For Series A, check the Series A raise page for managing a larger pipeline and landing a lead investor. All use the same milestone-anchored approach to keep the raise grounded.

Founders who run a disciplined raise often borrow lessons from unlikely sources. Analyzing 10 genius ways Jeff Bezos raised capital and built Amazon reveals that every capital decision was tied to a specific milestone - inventory, distribution, AWS - not to a vague growth plan. The discipline of sizing a round to a milestone is what lets you say no to money you don't need.

And if you still think any of this is optional or that a round size doesn't really matter, read 10 fundraising myths founders still believe (and the truth) on the Capitaly blog. Myth number three is that you should raise as much as you can whenever you can. The truth: that's how you oversell equity and create expectations you can't deliver on.

Key takeaways

• Raise amount is a function of the milestones you must reach to unlock the next round, not a vanity number.
• Build a month-by-month cost model from headcount to opex to net burn. Only then can you calculate the cash required.
• Aim for 24 months of runway, including a 15-20% buffer, to avoid raising from a position of weakness.
• Check dilution only after you know the required capital. If dilution is too high, reduce scope, not runway.
• Pressure-test your number against market norms from recent founder conversations, not just databases.
• Document the plan and use it to lead investor conversations with evidence, not requests.

Deciding how much to raise isn't a guessing game. When you build the number from the bottom up, it stops being a negotiation variable and becomes a statement of understanding your own business. That's the kind of founder investors back.

Ready to size your next round and run it with clarity? Set up your raise on Capitaly and get from calculation to close in one workspace. Subscribe to Capitaly's daily insights on Substack for more tactical guides on raising capital smart.