Why the launch cost and the survival cost are two different numbers
“How much do I need to get started?” is one of the first questions almost every new business owner asks — and one of the easiest to answer too narrowly.
The number most people picture is the cost of opening the doors. The number that actually matters is the cost of staying open until the business can support itself.
The short answer
You generally need three separate pools of money: what it costs to set up (one-off start-up costs), what it costs to keep running before the business is reliably profitable (working capital), and a personal buffer to cover your own living costs in the meantime. Most underestimated start-ups fail not because the idea was wrong, but because only the first of these three was ever budgeted for.
The three pools, and what belongs in each
| Pool | What it covers |
|---|---|
| One-off start-up costs | Registrations, equipment, initial stock, website, signage, fit-out, professional advice |
| Working capital | Rent, wages, subscriptions, insurance and other running costs for the months before revenue is reliable |
| Personal living buffer | Your own household expenses, for however long it takes the business to pay you properly |
Why working capital is the pool most people forget
It's natural to price out equipment, a website and a first stock order, and feel ready. But very few businesses are profitable from day one — there's usually a ramp-up period where money goes out faster than it comes in. Running out of working capital during that ramp-up, not a flawed idea, is one of the most common reasons an otherwise viable business doesn't survive its first year.
A reasonable starting estimate is three to six months of full operating costs — rent, wages, insurance, subscriptions — held in reserve or funded, separate from the money spent setting up.
A simple worked example
A small café budgets $45,000 for fit-out, equipment and initial stock — the one-off cost. Monthly running costs (rent, wages, utilities, insurance) come to $18,000. Realistically, it may take four to six months to build a steady customer base and reach consistent break-even trading.
That's a genuine funding need closer to $45,000 plus $72,000–$108,000 of working capital — $117,000 to $153,000 in total, not the $45,000 the fit-out quote alone suggested.
Where the money can come from
Personal savings — the most common source for a first business, and the one that carries the least ongoing cost, but the most personal risk.
A business loan or line of credit — useful for bridging working capital, though repayments themselves become part of your running costs.
Equipment finance — spreads the cost of specific assets rather than tying up cash upfront.
Investors or a business partner — brings in capital, but also brings in shared ownership and decision-making, worth thinking through carefully before committing.
A staged or part-time start — some businesses deliberately begin smaller, funded by other income, to reduce the amount of capital needed upfront.
A quick self-check
Have I budgeted separately for one-off start-up costs and ongoing working capital — not combined them into one number?
How many months of running costs have I actually funded, versus assumed revenue will cover?
Do I have a personal living buffer separate from the business's own funding?
Have I planned for a slower-than-expected ramp-up, not just the optimistic case?
When should you get professional help?
you want a realistic start-up and working capital figure calculated for your specific business, not a rule of thumb;
you're deciding between funding sources and want the trade-offs explained;
you're preparing a funding application and need the numbers presented properly; or
you want a cash-flow forecast built for the ramp-up period specifically, not just the launch.
Continue learning
→ What Start-Up Costs Can I Claim Before My Business Begins Trading?
→ How Do I Know Whether My Business Idea Is Financially Viable Before I Commit?
→ What Is a Cash-Flow Forecast — and How Do I Build One?
SKC Accounting | Knowledge Centre | Knowledge Guide 046
Last reviewed: August 2026
General information only. This guide does not take into account your individual circumstances and is not a substitute for professional accounting, taxation, legal or financial advice.