Building a Pre-Revenue Budget That Survives Contact With Reality

Revenue projections before you have customers are guesses. Cost projections can be much more accurate — and they determine whether you run out of money before you run out of enthusiasm.

Separate setup costs from operating costs

Setup costs are one-time: equipment, fit-out, initial stock, registration fees, website build, signage. Operating costs recur monthly: rent, utilities, insurance, software subscriptions, your own drawings, part-time wages.

Founders often lump these together and underestimate the monthly burn by spreading setup costs mentally across “whenever.” List them separately.

Include your personal drawings

If you need $4,000 per month to cover rent, food, and bills, that is a business cost until the business can pay you. Many pre-revenue budgets show a profitable month six while the founder silently subsidises living expenses from savings without accounting for it.

Be honest about how many months you can self-fund. That number is your real runway.

The assumptions that fail most often

Insurance premiums — public liability for a shop or café is often $1,200–$2,500 per year, not the $400 some founders expect.

Permits and inspections — food businesses, childcare, and health services carry permit fees and mandatory inspections that add weeks and hundreds of dollars.

Stock write-offs — retail and hospitality founders over-order initial stock. Budget for 10–15% wastage or unsold inventory in the first quarter.

Payment terms — if you sell to other businesses on 30-day terms but pay suppliers on delivery, you need working capital to bridge the gap.

Build three scenarios

We recommend a conservative, expected, and optimistic revenue scenario — but keep costs identical across all three. Costs are knowable; revenue is not. If the conservative scenario shows you running out of cash in month four, address that before signing a lease.

Validate assumptions with quotes

Every line item over $500 should have a quote or written estimate behind it. “Rent will be about $2,000” is not good enough — get the lease draft or a letter of offer. “Equipment will cost around $10,000” should be a supplier quote with delivery and installation included.

A simple template

We provide a 12-month cash forecast spreadsheet in our Founder Advisory Sessions. The structure is straightforward: opening balance, monthly revenue (three scenarios), monthly costs by category, closing balance. Red cells mean you run out of money that month.

When to get help

If your forecast shows negative balances before month six and you cannot reduce costs further, that is a signal to pause — not a failure. Better to discover it in a spreadsheet than after you have committed to a lease.