How to Extend Your Startup Runway: The 90-Day Plan I Run Before a Raise

Most founders discover their runway is shorter than they thought about six weeks too late to do anything elegant about it. They have a bank balance, a rough sense of monthly burn, and a plan to raise that assumes investors move at the speed of their cash flow. They will not. Runway is an operating problem before it is a fundraising problem, and the ninety days before you open a round decide how much leverage you have when you do.

Count your runway properly before you cut anything

Almost every founder I speak to quotes runway from one division: cash in the bank over last month's outgoings. That number is usually wrong, and it is why panic cuts land in the wrong places.

Use a rolling thirteen-week cash forecast to identify the first week the bank balance comes under pressure. If you have not built one, the separate cash forecast guide covers the six rows, payment dates and Monday review. This article focuses on the operating decisions you take once that forecast is in place.

Then separate your two burn numbers. Gross burn is everything leaving the business. Net burn is gross burn minus the cash actually collected, not invoiced. Runway is cash divided by net burn, and I want it calculated on the average of the last three months rather than the best one.

Two adjustments founders skip. First, strip out one-off cash events so a single large collection does not flatter the average. Second, add committed costs that have not hit yet: notice periods, contracts with twelve-month terms you have already signed, the tax bill you know is coming. Committed cost is spent cash with a delay.

You cannot negotiate from a position you have not measured. Thirteen weeks on one page is the cheapest leverage in your business.

Let the number choose the plan

Once net burn is honest, the months left dictate what you are allowed to attempt.

• Ten months or more. You have time to extend and strengthen. Run the full ninety days below, then raise from strength.
• Six to nine months. Extension is the priority and a raise is secondary. Work on extension while keeping existing investors informed. Aim for enough time to negotiate without an immediate cash deadline; do not postpone funding conversations until you reach an arbitrary runway target.
• Three to five months. This is a different exercise. Talk to existing investors this week, not next quarter, and start the conversation with a plan rather than a request.

Worked example. You hold $640,000 and your three-month average net burn is $80,000. That is eight months, not the ten your best collection month suggests. Taking net burn to $55,000 through cuts and collections moves you to roughly eleven and a half months, which does more for your position than any deck revision.

Days 1 to 15: cut what does not touch revenue

Start where the decision is reversible and the saving is immediate.

1. Software. Export every recurring charge from the last twelve months, sort by amount, review tools with low use and cancel those that are not critical to delivery, compliance or security. A low user count alone is not a reason to cut an essential tool.
2. Billing cadence. Monthly costs more but preserves optionality when runway is tight. Prepay annually only on tools you would keep in a downturn.
3. Agencies and retainers. Review retainers without a measurable output in the last sixty days. Check notice terms and the impact on future revenue before renegotiating or ending them.
4. Payment terms. Ask your three largest suppliers for sixty-day terms. Some will say yes simply because nobody asked.
5. Founder and executive pay. Reduce it before you reduce anyone else's. Investors read the order of those two decisions closely.

The failure mode in this fortnight is cutting what generates pipeline because it is the easiest line item to see. Spend that produces qualified conversations at a known cost is not overhead, it is the machine. Cut what you cannot trace to an outcome, keep what you can.

Days 16 to 45: make revenue the cheapest it will ever be

Cost work buys weeks. Revenue work buys months, and at this stage the cheapest revenue is already inside the business.

Collections first. Pull every unpaid invoice and sort by age. Call, do not email, anything over thirty days. Offer two per cent off for immediate payment on invoices over sixty days and take the cash. On new contracts, ask for quarterly or annual payment up front: compare any prepayment discount with the actual cost of other financing, your delivery obligations and the risk of refunds. A ten per cent discount is not automatically the cheapest option.

Then your existing customers. Expansion closes faster than new business and costs almost nothing to source. Work through your accounts and ask two questions: what are they doing manually that you could charge to automate, and which adjacent team has the same problem. An introduction across a department is the shortest sales cycle you will run this quarter.

Then price. If you have not raised prices in eighteen months, you are funding your customers' margins out of your own runway. Raise new-customer pricing first, leave existing contracts until renewal, and watch close rate for four weeks. If it holds within a few points, the increase was overdue.

Then outbound, narrowed. This is not the quarter to open three new segments. Take the segment your last five wins came from and go deeper, with a qualification bar tight enough that your calendar fills with real conversations instead of polite ones. The mechanics of B2B outbound reduce to one principle here: fewer accounts, better fit, more touches each.

Days 46 to 75: rebuild a plan you can defend

By now you know your real burn and you have moved two or three revenue levers. Rebuild the plan as three scenarios on one page rather than one hopeful forecast.

The three cases

Base case: current pipeline, current close rate, no new hires. Downside: revenue flat from today and a named list of what you would cut in month two, with the saving next to each line. Upside: the two or three things that would have to be true, each with the leading indicator you would watch.

The downside case is the one investors read first, and the founders who have written it sound different in the meeting. It is the difference between hoping and planning, and it is audible within a minute.

Use this window to get the folder in order too, because investor readiness is a data room problem and not a pitch problem. Cohort retention, a clean cap table, signed contracts, monthly management accounts: if these take three weeks to assemble during diligence, you have handed the other side three weeks of leverage.

Days 76 to 90: decide, and decide early

The last fortnight is a decision, not more work. Three paths, chosen by arithmetic.

Raise a priced round if the plan you rebuilt shows the growth that supports it and you have twelve months or more of runway to negotiate with. The odds are worth respecting: Carta's data shows roughly 17% of the 2022 seed cohort reached a Series A within 24 months, against 25 to 30 per cent in a more normal year. Plan for a process that takes longer than you want.

Take a bridge from existing investors if the metrics are moving but need two more quarters to be legible. Go to the people already on your cap table, with the thirteen-week view and the three cases, and ask for a specific amount tied to a specific milestone. Pricing has become less punitive than it was: Carta reported the down-round rate falling to 11.4% in Q1 2026 from a peak of around 22% in 2023. That is a better environment than 2023, not a forgiving one.

Or do not raise at all. Getting to default alive on customer revenue is a legitimate outcome, and some quarters it is the better one. I hold capital as something to steward rather than accumulate, and that conviction has made the decision easier more than once: dilution taken to avoid a hard operating conversation is expensive in a way the cap table keeps reminding you about.

The five numbers I keep on one page

• Net burn, three-month average. The only burn figure worth quoting.
• Months of runway at that burn. Updated weekly, not quarterly.
• Days sales outstanding. If it is above forty-five, your collections process is a funding round you have not drawn down.
• Gross margin by product line. Growth in a low-margin line shortens runway. Founders find this out late.
• Pipeline coverage. Qualified pipeline divided by the quarter's target. Below three times, the revenue case in your plan is not real.

Where this goes wrong, and what to do this week

Three failure modes account for most of it. Cutting once and cutting too lightly, so a second round arrives in month four and costs the team's confidence: size the reduction for the downside case the first time. Cutting the revenue engine because it is the largest visible line, which buys a month and costs two quarters of pipeline. And running the extension quietly, which is the worst of the three. Tell your team the runway number and the plan. People manage spending differently when they know what is at stake.

Extending runway is not an austerity exercise. It is buying yourself the right to say no to a bad term sheet.

Build the thirteen-week cash view before anything else. Calculate net burn on a three-month average, write the runway figure at the top, and send it to your co-founder or your board. That number, honestly calculated, tells you which of the ninety days above you are on.