Startup Burn Rate Calculator - Are You Default Alive or Default Dead?

How to Use the Calculator

The calculator needs four numbers from you. If you don't have exact figures, use your best estimate - even rough numbers will give you a useful picture.

Cash in the bank: How much money do you have right now? Not committed funding. Not an expected grant. Actual cash in your bank account today.

Monthly revenue: What are you making each month? If revenue is irregular, average the last three months.

Monthly expenses: Everything your business spends each month. Salaries, rent, software, contractors, hosting, insurance - all of it. This is your total burn before revenue offsets it.

Monthly revenue growth rate: How fast is your revenue growing month-on-month? If you're growing 10% per month, enter 10. If you're not growing, enter 0. Be honest here - optimistic growth projections are one of the most common ways founders fool themselves.

Hit calculate and you'll see whether you're default alive or default dead, how many months of runway you have, when you need to start fundraising, and an 18-month cash projection.

What "Default Alive" Actually Means

Paul Graham's insight was deceptively simple. Assuming your expenses stay constant and your revenue keeps growing at its current rate, will you reach profitability before the money runs out?

If yes, you're default alive. You don't need to raise money. You might choose to raise - for faster growth, for strategic hires, for expansion - but you don't need to. That's an incredibly powerful position. When you raise from a position of strength, you get better terms, better investors, and better outcomes.

If no, you're default dead. Without additional capital or significant changes, your company will run out of money. That doesn't mean you're doomed - it means you need to act. Either raise money, cut expenses, or dramatically accelerate revenue growth.

The reason this framework matters so much is that it forces honesty. Most founders operate in a grey zone where they kind of know they're burning cash but haven't confronted the timeline. Graham's framework makes the timeline undeniable. You either make it or you don't. The maths doesn't lie.

The Runway Rules

After working with hundreds of founders through Startmate, here are the runway rules I live by.

Less than 3 months of runway: you're in crisis mode. Things are getting very dicey. Every dollar matters. You should be cutting every non-essential expense immediately and either closing a round this week or making the hard decision to shut down or drastically pivot. At this point, fundraising becomes extremely difficult because investors can smell desperation and your leverage is zero.

3-6 months of runway: you should be actively fundraising right now. Fundraising typically takes 3-6 months. If you have six months of cash left and you haven't started the process, you're already behind. Start building investor relationships immediately. Simultaneously, look at ways to extend runway by cutting costs.

6-12 months of runway: plan your raise. You have time, but not as much as you think. Use this window to hit the milestones that make you more fundable - customer growth, revenue targets, product launches. Start warming up investor relationships now so that when you kick off the formal raise, you're not starting cold.

12+ months of runway: you're in a strong position. Focus on building, not fundraising. Use this runway to find product-market fit, grow your customer base, and build the traction that will make your eventual raise easy. Don't waste a strong runway position by raising too early at a low valuation.

The golden rule: start your fundraise at least 3 months before you need the money. Fundraising always takes longer than you think. Conversations stall. Due diligence takes weeks. Legal documentation takes weeks. If you wait until you're desperate, you'll take a bad deal because you have no other option.

The Expenses That Kill You Slowly

Most founders don't blow through their cash on one big expense. They die from a thousand small cuts. Here are the expense traps I see most often.

Hiring too fast. This is the number one killer. A founder raises a round, feels rich, and immediately hires five people. Each hire adds $8-15K per month in total cost (salary, super, equipment, software licenses). Five hires at $10K each is $50K/month of new burn. That $500K seed round that was supposed to last 18 months now lasts eight.

The R&D Tax Incentive trap. So many founders in Australia rely on the R&D Tax Incentive as part of their financial planning. To be fair, there are providers who will advance you the cash before the ATO refund comes through, which helps manage cashflow. But don't build your entire financial plan around the refund arriving on time. It's a bonus, not a baseline.

Software creep. $50/month for this tool. $100/month for that one. $30/month for analytics. $200/month for CRM. Before you know it, you're spending $2K/month on tools that you're only using 10% of. Audit your subscriptions quarterly. If you haven't logged into a tool in 30 days, cancel it.

Office space too early. Working from a cafe or a home office costs nothing. A co-working desk costs $300-500/month. A small office costs $2-5K/month. Don't upgrade until the team genuinely needs it. I've seen founders sign 12-month leases before they've found product-market fit.

Contractor scope creep. A $5K design project becomes $15K. A $10K development sprint becomes $30K. Scope your contractor work tightly and set hard budget caps. Every dollar of overrun comes directly from your runway.

How to Extend Your Runway Without Raising

Sometimes the answer isn't raising more money. Sometimes it's spending less.

Cut before you raise. Before you go to investors and ask for capital, ask yourself: can I get to the next milestone by spending less? Investors are more impressed by founders who are capital-efficient than founders who need $1M to figure out their next step.

Revenue is your best capital. This gets overlooked constantly. If you can fund growth from customer revenue, you maintain full ownership, full control, and full flexibility. It's slower, but it's the cheapest money you'll ever find. Every dollar of revenue extends your runway and reduces your dependence on external capital.

Renegotiate everything. Call your suppliers. Ask for discounts. Extend payment terms. Move to annual plans where you get a discount. Negotiate your rent. Every thousand dollars saved is another week of runway.

Defer salaries (temporarily). If the founding team can afford to take reduced salaries for three months, that can add months of runway. This only works if it's genuinely temporary and the team is aligned on why.

Government grants. Australia has some of the best startup grant programmes in the world. State and federal innovation grants, the R&D Tax Incentive, Export Market Development Grants. Many founders don't bother applying because they think it's too much paperwork. It's not. The grants can be meaningful - $50K to $200K is not uncommon.

The mindset shift: every expense is a choice. Every choice has a runway impact. The founders who track their burn rate monthly and challenge every line item are the ones who survive long enough to find product-market fit.