How much should I raise?

The number is set by the milestone, not the market.

Every founder starts here: "how much can I raise?" That's the wrong question. It's the question a founder asks when they've already accepted that fundraising is a status game.

The right question is smaller. What's the smallest amount that gets you to the next credible fundraising milestone, plus six months of buffer past it? Answer that and the number falls out. Ignore that and the number is arbitrary — it becomes about optics, comps, whatever your peer raised at YC demo day, whatever a partner said off-hand last week.

The market doesn't set the number. Your next milestone does.

What "the milestone" actually means

A milestone isn't a vanity number you like. It's the specific proof point the next round's investors will underwrite off of. If you're raising pre-seed today, the milestone is whatever gets you into a real seed conversation. If you're raising seed, it's whatever gets you a Series A term sheet with more than one option.

Concrete:

• Pre-seed → seed. Seed investors underwrite off traction shape. $10-25K MRR growing 15-20% MoM for four months. Or a design partner + LOI stack from three brand-name customers. Or a shipped product with 500+ paying users. Pick one that matches your business shape. Cost how long it takes to hit it. Add six months.
• Seed → Series A. Series A investors underwrite off consistent double-digit MoM growth at $80-150K MRR minimum, with retention proof (net revenue retention north of 100% for SaaS, 40%+ D30 for consumer). Pick the metric that matches. Cost the runway. Add six months.

Every business shape has its own milestone math. If you don't know what your specific milestone is, you can't size the round — you're guessing. And the fix isn't "raise more to be safe." The fix is figuring out the milestone first.

The six-month buffer rule

Cost the milestone honestly. Then add six months of runway past the target hit date.

Not three months. Not twelve. Six.

Three is too tight — you'll hit the milestone, then immediately be raising with your hair on fire, negotiating from weakness. Twelve is too loose — you'll deploy that extra six months into stuff that doesn't move the metric.

Six months post-milestone is the sweet spot. You have data to underwrite the raise. You have time to run a proper process (10-14 day density window plus 4-8 weeks to close). You're not desperate. Investors can smell desperation from the first email, and it kills valuations.

The two failure modes

Both are ego problems, not strategy problems.

• Over-raising for optics. "$3M sounds serious. $1.5M sounds small." You raise $3M when the milestone actually costs $1.2M + buffer. You give up 15-20% of the company for capital you don't need. Then you burn it on hires you don't need, tools you don't need, and a São Paulo offsite. The extra runway becomes extra dilution and extra scar tissue. The Series A raise now needs to justify $3M of deployment. It doesn't.
• Under-raising from insecurity. You raise the smallest number you can sell — usually because you're worried about valuation dilution or worried nobody will believe a bigger number. Then you run out of oxygen halfway between rounds. You're raising a bridge at 9 months instead of running your next full round from strength at month 14. Bridges are marketing polish for "we didn't raise enough the first time."

Both are avoidable. Both come from asking "how much can I raise" instead of "what's the smallest amount that gets me to the milestone plus six."

What to skip

Don't do any of this:

• "Raise 18-24 months of runway." Common advice. Wrong shape. It's a runway calculation, not a milestone calculation. You can burn 24 months without hitting the next milestone. Then you're just late.
• "Raise what your comps raised." Your comps had a different milestone at a different burn rate. The comp is signal that the market will fund your stage. It's not a target.
• "Raise the maximum you can get." This is the most-repeated bad advice. If you raise $2M when the milestone costs $800K + buffer, you've handed 12-14% of the company away for zero productive use.
• "Raise less to keep the cap table clean." Nobody at Series A looks at a $1.5M pre-seed check on a clean cap table and calls that a red flag. They look at burn rate vs. traction. Clean cap table plus dead company is still dead.

Sizing worksheet, in five minutes

Do this before you talk to a single investor:

1. Write down the next-round milestone. In one sentence. If you can't, you're not ready to raise. See Am I ready to raise.
2. Cost the milestone honestly. Team you need. Tools. Marketing spend. Runway to hit it at your current burn rate. Use the highest reasonable cost estimate — not the aspirational one.
3. Add six months of post-milestone burn. Same monthly burn extended by 6.
4. Round to the nearest tidy number — up if you're within 15%, not down. So $1.42M → $1.5M. $1.55M → $1.75M. Round numbers matter for SAFE caps and investor conversations.
5. That's your number. Stop moving it because Twitter said something.

Get an agent that runs this with you

You picked the right amount. Now you need to actually raise it. That's where most founders lose weeks — juggling 30 investor conversations, drafting 40 pieces of outreach, prepping for 12 meetings, tracking who said what and when.

raise(fn) is the agent that runs your raise with you. You chat. It targets funds that fit your specific milestone-and-buffer math. It drafts outreach with real investor context, not generic templates. It preps you from your prior meeting debriefs. It tracks the pipeline so you always know where each conversation stands.

You don't fill out forms. You don't run a CRM. You raise, and the agent handles the rest.

FAQ

Should I raise a big round if a top-tier fund wants to lead?

No. Take the money. Don't inflate the round to match. The signal comes from the lead, not the round size. Raise the right amount at whatever cap makes the check work.

What if investors say the round is too small?

They mean it's too small for them, not too small in general. Different funds have different minimum check sizes. Talk to funds sized for your round. See How do I find investors who invest in my space.

Can I raise a bigger round after I close?

No. Round extensions look like distress. Investors read them as "the first raise wasn't enough" and mark down the cap table. Raise once, right, then run.

How does the amount affect the SAFE cap?

Directly. Investors solve for ownership target — usually 5-15% for pre-seed writing $250-500K, 15-25% for a lead check. Your amount × their target ownership sets the cap band. Pick the amount first, then negotiate the cap inside the band.

What if I don't know my next milestone?

Then you're not ready to raise. Fix that first. Milestone clarity is the difference between a 4-week close and a 4-month grind. See Am I ready to raise.

Should I "raise more just in case"?

No. Dilution isn't optional insurance — it's permanent. The right insurance is 6 months of post-milestone buffer. That's it.