Start raising when you have 6 to 9 months of runway left, and never let it fall below 6. Fundraising takes 3 to 6 months end to end, so beginning with less means negotiating from weakness or running out mid-process. Aim to raise enough to reach 18 to 24 months of runway and clear the milestones that justify your next round.
Runway timing is where the traction story meets the calendar - the numbers you assemble in how to show traction to investors only convert if you start with enough cash to negotiate. Here is how much to have, how long it really takes, and what to do if you are running low.
How Much Runway Should You Have Before You Start Raising?
Begin the raise with 6 to 9 months of cash in the bank. That window gives you time to run a real process - build the list, take meetings, create competition, and negotiate - without a countdown forcing you into the first term sheet you see. Below 6 months, investors can smell the deadline, and the leverage shifts entirely to their side.
The mistake is treating your runway-out date as your raise-by date. They are not the same. Your raise needs to close months before you run out, which means the process has to start months before that. Founders who wait until they have three months of cash left routinely take worse terms, or fail to close at all, because desperation is visible and priced in.
How Long Does Fundraising Actually Take?
Plan for 3 to 6 months from first meeting to cash in the bank, and longer in a tight market. The timeline breaks down roughly like this:
| Phase | Typical duration |
|---|---|
| Prep (deck, model, data room, target list) | 2-4 weeks |
| First meetings and partner meetings | 3-6 weeks |
| Diligence and term-sheet negotiation | 2-4 weeks |
| Legal, closing docs, and wiring | 3-6 weeks |
Those phases overlap, but they also slip - holidays, a slow lead, a re-trade in diligence. The safe planning number is that money hits your account about 4 to 6 months after you decide to start. Working backward from your runway-out date is the only reliable way to pick a start date, and it almost always means starting sooner than feels comfortable.
How Much Runway Should the Round Itself Buy You?
Raise enough to reach 18 to 24 months of runway. That is long enough to hit the milestones that de-risk the next round with a quarter or two of buffer to start the following raise from strength - not so long that you take excessive dilution for capital you will not deploy efficiently. Twelve months is too short: you would be raising again almost immediately, before you have proof to show.
Size the round around milestones, not a round number. Ask what metrics unlock the next stage - the bar in traction benchmarks by funding stage - then fund the team and spend needed to hit them plus buffer. A round sized to "get to the metrics that raise the next round comfortably" is far more defensible than "we want to raise 3 million because that sounds right."
How Do You Calculate Your Runway?
Runway is cash in the bank divided by net monthly burn. Net burn is total monthly cash out minus cash in, so a company spending 120,000 and collecting 40,000 burns 80,000 net per month; with 800,000 in the bank, that is 10 months of runway. Recompute it monthly - it is one of the core numbers in every investor update - because a change in hiring or revenue moves the date fast.
Two cautions. Use net, not gross, burn, or you will understate your runway and panic early. And model forward, not just off last month: if you plan to hire or increase spend, your future burn is higher than your trailing burn, and your real runway is shorter than the simple division suggests.
What If You Are Running Low on Runway?
If you are inside 6 months and a priced round is not realistic on the timeline, you have three levers: extend runway by cutting burn, raise a bridge, or both. Cutting burn to buy months is almost always the first move - it is fully in your control and it strengthens every other option. A bridge (typically a SAFE or convertible note from existing investors) can buy time to hit the milestone that unlocks a proper priced round; the trade-offs are covered in bridge round vs priced round.
What you should not do is start a full priced raise with three months of cash and no plan B. If the round slips - and rounds slip - you are out of business. Cut first to create time, then raise from a position where you can still say no.
What Are the Signals It Is Time to Start Raising?
- You are 6-9 months from zero at your forward-looking burn.
- You have hit or are about to hit the milestones that clear the next stage's benchmarks.
- Your metrics are trending up, so the story improves the longer investors watch - you raise into momentum, not decline.
- Your data room is ready, so diligence will not stall the close.
The ideal is to raise into strength: enough cash to negotiate, a metric curve pointing up, and a milestone story that makes the round obvious. Waiting until the numbers plateau or the cash runs thin does the opposite.
TL;DR
- Start with 6-9 months of runway, never below 6 - below that, investors price your deadline against you.
- Fundraising takes 3-6 months; money hits the bank about 4-6 months after you decide to start.
- Raise to reach 18-24 months of runway, sized around the milestones that unlock the next round, not a round number.
- Runway = cash / net monthly burn, modeled forward for planned hiring and spend, recomputed monthly.
- Running low? Cut burn first, then consider a bridge - never start a full raise on three months of cash with no plan B.
FAQ
How Much Runway Should I Have Before Raising?
Start raising with 6 to 9 months of runway in the bank and never let it drop below 6. Fundraising takes 3 to 6 months end to end, so a smaller buffer forces you to negotiate against a visible deadline or risk running out mid-process. The healthiest position is to raise into strength - enough cash to walk away and metrics trending up.
How Long Does It Take to Raise a Round?
Plan for 3 to 6 months from first meeting to cash in the bank, longer in a tight market. Prep takes 2 to 4 weeks, first and partner meetings 3 to 6 weeks, diligence and term-sheet negotiation 2 to 4 weeks, and legal plus closing another 3 to 6 weeks. Phases overlap but also slip, so the safe planning number is 4 to 6 months from decision to funds.
How Much Money Should I Raise?
Raise enough to reach 18 to 24 months of runway, sized around the milestones that unlock your next round rather than a round number. Twelve months is too short - you would be back in the market before you have new proof. Work out which metrics clear the next stage's benchmarks, then fund the team and spend to hit them with a quarter or two of buffer.
How Do I Calculate My Startup'S Runway?
Runway is cash in the bank divided by net monthly burn (cash out minus cash in). A company with 800,000 in the bank burning 80,000 net per month has 10 months of runway. Use net rather than gross burn, and model forward: if you plan to hire or increase spend, your future burn is higher than last month's, so your real runway is shorter than a simple trailing division shows.
What Should I Do If I Am Running Low on Runway?
Cut burn first to buy months - it is fully in your control and strengthens every other option. Then consider a bridge round (usually a SAFE or note from existing investors) to reach the milestone that unlocks a priced round. Do not start a full priced raise with only three months of cash and no plan B; if the round slips, you are out of business.